Air passage piece for coil
By optimizing the air duct structure, using high-strength aluminum alloy, symmetrically arranged sub-plates and heat dissipation fins, combined with phase change materials and temperature relays, the problems of inaccurate temperature detection and structural instability in the coil heat dissipation structure were solved, achieving efficient heat dissipation and precise temperature control, meeting the needs of high-performance power electronic products.
Patent Information
- Application Number
- CN202520109513.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-01-17
AI Technical Summary
In the existing technology, the coil heat dissipation structure of transformers and reactors has problems such as inaccurate temperature detection, structural instability and poor heat dissipation performance, which are particularly prominent in high power density power electronic equipment.
A gas duct structure was designed, including a high-strength aluminum alloy body, a symmetrically arranged first and second sub-plates, and heat dissipation fins and phase change materials to form multiple independent gas duct channels and sealed chambers. A temperature relay was installed to achieve precise temperature monitoring and control.
It significantly improves heat dissipation efficiency and temperature detection accuracy, enhances structural stability, and ensures the safe operation and reliability of power electronic equipment in high-temperature environments.
Smart Images
Figure CN223911493U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of power electronics technology, specifically to an air duct structure for heat dissipation of coils in power electronic equipment such as transformers and reactors. More specifically, this application relates to an air duct for coils that improves heat dissipation efficiency, temperature detection accuracy, and structural stability by optimizing the internal structural design of the air duct, and is particularly suitable for the heat dissipation needs of high power density power electronic equipment. Background Technology
[0002] With the development of the power electronics industry and technology, higher requirements have been placed on the heat dissipation performance of products. To optimize heat dissipation, existing technologies typically employ I-shaped air duct structures for heat dissipation and conduction in the coils of transformers and reactors. However, while this structure increases the heat dissipation area of the coils and reduces the temperature rise of the product to some extent, it still has some significant shortcomings.
[0003] First, under strong air cooling conditions, as shown in the attached... Figure 1 As shown, the data fed back by the temperature relay placed within the I-shaped air passage groove formed by existing air passage components is often inaccurate. This is because the design of the I-shaped air passage groove causes a deviation between the temperature at the detection point and the actual temperature, resulting in inaccurate temperature rise data reports. This deviation can cause the actual temperature of the product to be lower than the temperature at the embedding point, leading to misjudgments in temperature detection and failing to accurately reflect the actual operating temperature of the product.
[0004] Secondly, for high-power products, the wider coil laminations require the use of I-shaped air passages with a larger span. However, the insufficient hardness of aluminum results in inadequate rigidity of the I-shaped air passages, making them prone to deformation. (See attached diagram) Figure 2 When the air duct is deformed, it not only fails to dissipate heat effectively, but also blocks the heat dissipation air duct, causing heat to accumulate inside the product, increasing the product's temperature rise, and seriously affecting the product's lifespan.
[0005] In addition, refer to the appendix Figure 3 As shown, the traditional I-shaped air duct structure also suffers from poor heat conduction and dissipation performance. Because one supporting corner of the air duct needs to contact the insulating paper and the other supporting foot needs to contact the aluminum foil, but the contact area is small, heat can only be conducted and dissipated from one side, resulting in poor performance. This uneven heat conduction method leads to heat dissipation performance far below expectations, failing to meet the requirements of modern high-performance power electronic products.
[0006] Finally, under strong air cooling, the temperature relay inside the I-shaped air duct also faces the problem of not being securely fixed. This situation affects the data feedback of the temperature relay, causing the detected temperature to be much lower than the actual temperature at the burial point, further exacerbating the inaccuracy of temperature detection and posing a potential threat to the safe operation of the product.
[0007] In view of the deficiencies of the prior art, the development of new technology is particularly important.
[0008] The disclosure of the background art content is only used to assist in understanding the inventive concept and technical solutions of the utility model, and it does not necessarily belong to the prior art of the utility model. In the absence of explicit evidence that the above content has been disclosed before the application date of the utility model, the above background technology should not be used to evaluate the novelty and inventiveness of the utility model. Utility model content
[0009] The purpose of the present application is to overcome at least one deficiency in the prior art, and to provide an air passage for a coil, which improves heat dissipation efficiency, temperature detection accuracy and structural stability through structural improvement, and meets the heat dissipation requirements of modern high-performance power electronic products.
[0010] To achieve the above-mentioned purpose, the utility model discloses an air passage for a coil, which comprises a body, two first vice plates, two second vice plates and a temperature relay.
[0011] Among them, the cross section of the body is a rounded rectangular ring, two first vice plates are symmetrically arranged inside the body along the center of the body and close to the center of the body, and each first vice plate is parallel to the side of the body.
[0012] The two sides of the first vice plate are vertically connected to the inner surfaces of the top and bottom of the body, thereby forming a support structure for the body.
[0013] Further, the two first vice plates longitudinally divide the space inside the body into a first chamber, a mounting chamber and a second chamber, wherein the first chamber and the second chamber are symmetrically arranged with the mounting chamber.
[0014] The symmetrical arrangement of the first vice plate provides sufficient space for the mounting chamber, and by forming a plurality of independent air passage channels, the airflow is evenly distributed inside the air passage, avoiding the accumulation of local heat.
[0015] The two second vice plates are arranged in the first chamber and the second chamber respectively, and the two sides of each second vice plate are connected with the side of the body and the first vice plate respectively. The two second vice plates divide the first chamber and the second chamber into two parts, namely the first zone and the second zone, respectively. The second zone close to the bottom is sealed, and the two ends form a sealed chamber, which is filled with a phase change material. The phase change material absorbs heat and changes phase when the temperature rises, thereby reducing the local temperature rise and enhancing the heat dissipation performance.
[0016] Further, the second vice plate extends a heat dissipation fin on the surface opposite to the top of the body. The heat dissipation fin increases the heat dissipation surface area and optimizes the airflow path, thereby improving the heat dissipation effect and forming a heat dissipation chamber.
[0017] Further, the temperature relay is fixedly installed in the mounting chamber, with the bottom thereof in contact with the bottom of the body, for monitoring the temperature change of the airway member in real time; the signal output pin of the temperature relay is led out through the side wall of the body, so as to be connected with an external control system, realizing real-time transmission and control of the temperature signal.
[0018] The airway member of the present application is optimized in structure. The symmetrical arrangement of the first sub-plate and the second sub-plate further enhances the stability of the structure, while providing a guarantee for the uniform distribution of airflow. The introduction of the phase change material effectively reduces local temperature fluctuations by absorbing and releasing heat, improving the heat dissipation performance. The design of the heat dissipation fins significantly improves the heat dissipation efficiency by increasing the heat dissipation surface area and optimizing the airflow path. The installation and signal leading-out design of the temperature relay further enhance the temperature monitoring and control capability of the airway member, making it suitable for high-precision temperature control scenarios.
[0019] The above-listed beneficial effects are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementation methods will be further disclosed in the embodiments or other description parts of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0020] The specific embodiments will be better understood after reading the following detailed description in conjunction with the accompanying drawings, in which the positions, sizes, and ranges of the structures shown in the drawings are sometimes not representative of actual positions, sizes, and ranges. In the drawings:
[0021] Figure 1 is a structural schematic diagram of an existing airway member.
[0022] Figure 2 is a structural schematic diagram of an existing airway member after deformation.
[0023] Figure 3 is a schematic diagram of heat conduction contact of an existing airway member in use.
[0024] Figure 4 is a structural schematic diagram of an embodiment disclosed by the present application.
[0025] The respective reference numerals in the drawings are as follows:
[0026] 1 - body, 2 - first sub-plate, 3 - second sub-plate, 4 - temperature relay, 5 - first chamber, 6 - mounting chamber, 7 - second chamber, 8 - first region, 9 - second region, 10 - sealing chamber, 11 - phase change material, 12 - heat dissipation fin. DETAILED DESCRIPTION
[0027] The present disclosure will be described with reference to the accompanying drawings, which illustrate several embodiments of the present disclosure. It should be understood, however, that the present disclosure can be presented in many different forms and are not limited to the embodiments described below; in fact, the embodiments described below are intended to provide a more complete disclosure of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.
[0028] It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, the dimensions of some features can be distorted for the sake of clarity.
[0029] It should be understood that the language used in the specification is only used to describe specific embodiments and is not intended to limit the present disclosure. Unless otherwise defined, all terms (including technical and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art. For the sake of brevity and / or clarity, techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description when appropriate.
[0030] The singular forms "a", "said" and "the" used in the specification, unless clearly indicated otherwise, include plural forms. The language "includes", "comprises" and "contains" used in the specification means the presence of the stated feature, but does not exclude the presence of one or more other features. The language "and / or" used in the specification includes any and all combinations of one or more of the associated listed items. Embodiments
[0031] Referring to the accompanying drawings, Figure 4 The embodiment is intended to specifically illustrate an implementation of the present utility model, to show its effect in practical application. The air passage piece of the embodiment includes a body 1, two first sub-plates 2, two second sub-plates 3, and a temperature relay 4.
[0032] Specifically, the body 1 is made of high-strength aluminum alloy material, and its cross section is a rounded rectangular ring, which has good thermal conductivity and mechanical strength, and can effectively support the internal structure and conduct heat. The two first sub-plates 2 are symmetrically arranged inside the body 1 along the center of the body 1, close to the center of the body 1, and each first sub-plate 2 is parallel to the side of the body 1.
[0033] The two sides of the first sub-plate 2 are vertically connected to the inner surfaces of the top and bottom of the body 1, forming a support structure for the body 1. This design not only enhances the rigidity of the whole, but also provides a basis for uniform distribution of airflow.
[0034] Through the above structure, the two first sub-plates 2 divide the space inside the body 1 into a first chamber 5, a mounting chamber 6, and a second chamber 7 longitudinally, wherein the first chamber 5 and the second chamber 7 are symmetrically arranged with the mounting chamber 6.
[0035] It should be understood that this symmetrical arrangement provides sufficient space for the mounting chamber 6 and evenly distributes the airflow inside the air duct by forming multiple independent air passage channels, avoiding the accumulation of local heat.
[0036] Based on the above structure, the two second sub-plates 3 are arranged in the first chamber 5 and the second chamber 7 respectively, and the two sides of each second sub-plate 3 are connected with the side of the body 1 and the first sub-plate 2 respectively. The design of the second sub-plate 3 further enhances the stability of the structure and divides the first chamber 5 and the second chamber 7 into two parts, namely the first area 8 and the second area 9.
[0037] Specifically, the second area 9 near the bottom is sealed, and the two ends form a sealed chamber 10, which is filled with phase change material 11. The phase change material 11 absorbs heat and changes phase when the temperature rises, thereby reducing the local temperature rise and enhancing the heat dissipation performance. For example, in a high-temperature environment, the phase change material 11 can absorb excess heat and slow down the temperature rise, ensuring the stability of the air duct under extreme working conditions. The second sub-plate 3 extends a heat dissipation fin 12 on the surface opposite to the top of the body 1, which increases the heat dissipation surface area and optimizes the airflow path, thereby improving the heat dissipation effect and forming a heat dissipation chamber. The design of the heat dissipation fin 12 not only increases the heat dissipation area, but also guides the airflow flow, avoiding the decrease of heat dissipation efficiency caused by airflow turbulence.
[0038] In this embodiment, the temperature relay 4 is fixedly installed in the mounting chamber 6, with its bottom in contact with the bottom of the body 1, for real-time monitoring of the temperature change of the air duct. The signal output pin of the temperature relay 4 is led out through the side wall of the body 1 to connect with the external control system, realizing real-time transmission and control of the temperature signal. For example, during the operation of power electronic equipment, the temperature relay 4 can monitor the temperature change of the air duct in real time and transmit the data to the control system to adjust the heat dissipation strategy in time, ensuring the safe operation of the equipment. This design not only improves the accuracy of temperature detection, but also enhances the intelligent control capability of the air duct.
[0039] In practical applications, the air passage piece of the present embodiment can significantly improve the heat dissipation efficiency and temperature detection accuracy. For example, in high-power power electronic devices, the traditional I-shaped air passage slot is prone to deformation, which can block the heat dissipation air duct. However, the air passage piece of the present embodiment can enhance the structural rigidity by the symmetrical arrangement of the first secondary plate 2 and the second secondary plate 3, thereby avoiding the deformation problem. At the same time, the introduction of the heat dissipation fins 12 and the phase change material 11 further optimizes the heat dissipation performance, ensuring the stable operation of the device in high-temperature environments. In addition, the precise monitoring of the temperature relay 4 and the real-time data transmission function enable the device to dynamically adjust the heat dissipation strategy according to the actual temperature changes, thereby improving the reliability and service life of the device.
[0040] Through the above design, the air passage piece of the present embodiment not only solves the problems of poor heat dissipation performance, inaccurate temperature detection, and insufficient structural stability in the prior art, but also optimizes the airflow distribution, enhances the heat dissipation effect, and improves the temperature monitoring accuracy, thereby meeting the heat dissipation needs of modern high-performance power electronic products. For example, in wind power generation equipment, the air passage piece of the present embodiment can effectively reduce the temperature rise of transformers and reactors, thereby prolonging the service life of the equipment. At the same time, through real-time temperature monitoring, the safe operation of the equipment under complex working conditions can be ensured. This design has broad prospects in practical applications and can significantly improve the performance and reliability of power electronic devices.
[0041] During the heat dissipation process, the airflow enters from the inlet of the air passage piece, passes through the first chamber 5 and the second chamber 7, and finally exits from the outlet. The airflow does not pass through the mounting chamber 6 but flows through the air passage channels in the first chamber 5 and the second chamber 7. The symmetrical arrangement of the first secondary plate 2 divides the internal space of the air passage piece into multiple independent air passage channels, thereby uniformly distributing the airflow and avoiding the accumulation of local heat. For example, when the airflow flows in the first chamber 5 and the second chamber 7, the airflow can uniformly cover the entire internal space of the air passage piece due to the guiding effect of the first secondary plate 2, thereby ensuring that the heat is effectively removed. At the same time, the second secondary plate 3 divides the first chamber 5 and the second chamber 7 into the first zone 8 and the second zone 9 in the transverse direction. The second zone 9 near the bottom is sealed and filled with the phase change material 11. When the airflow flows through the second zone 9, the phase change material 11 can absorb the heat in the airflow, thereby reducing the local temperature rise.
[0042] The heat conduction process of the phase change material 11 is one of its core functions. At room temperature, the phase change material 11 is in a solid state. When the temperature rises to its phase change temperature, the phase change material 11 begins to absorb heat and undergoes a phase change from solid to liquid. For example, during the operation of power electronic equipment, the temperature inside the air duct gradually rises. When the temperature reaches the phase change temperature of the phase change material 11, the phase change material 11 begins to absorb heat, slowing the rate of temperature rise. This heat absorption process not only reduces the local temperature, but also stores a large amount of heat through the latent heat of the phase change material 11, thereby enhancing the heat dissipation performance. When the device stops running or the temperature drops, the phase change material 11 releases the stored heat and reverts to a solid state, preparing for the next heat absorption process. The specific composition and phase change temperature of the phase change material 11 are not described in detail, as they can be selected according to actual application requirements and are known to those skilled in the art.
[0043] The design of the heat dissipation fins 12 further optimizes the heat dissipation process. The heat dissipation fins 12 extend on the surface of the second secondary plate 3 opposite the top of the body 1, increasing the heat dissipation surface area and improving the heat dissipation effect by optimizing the airflow flow path. For example, when the airflow flows through the heat dissipation fins 12, the heat dissipation fins 12 increase the contact area between the airflow and the surface of the air duct, allowing heat to be more efficiently transferred to the airflow. At the same time, the shape and arrangement of the heat dissipation fins 12 guide the airflow to form a stable flow path, avoiding the decrease in heat dissipation efficiency caused by airflow turbulence. This design not only improves the heat dissipation efficiency, but also ensures the stability of the air duct in high temperature environments. The specific size and arrangement of the heat dissipation fins 12 are not described in detail, as they can be adjusted according to actual heat dissipation requirements and are known to those skilled in the art.
[0044] In practical applications, the air duct of the present embodiment can significantly reduce the temperature rise of power electronic equipment through the above-mentioned heat dissipation and heat conduction processes. For example, in wind power equipment, transformers and reactors generate a large amount of heat during operation. The traditional air duct slot structure is prone to overheating due to poor heat dissipation performance. The air duct of the present embodiment, through the symmetrical arrangement of the first secondary plate 2 and the second secondary plate 3, enhances the rigidity of the structure and avoids deformation problems; through the heat absorption of the phase change material 11 and the optimization design of the heat dissipation fins 12, the heat dissipation efficiency is significantly improved. At the same time, the precise monitoring and real-time data transmission function of the temperature relay 4 enables the device to dynamically adjust the heat dissipation strategy according to the actual temperature changes, further improving the reliability and service life of the device. The specific model and parameters of the temperature relay 4 are not described in detail, as they can be selected according to actual application requirements and are known to those skilled in the art.
[0045] From the above detailed description, it can be seen that the airway piece of the present embodiment significantly improves the heat dissipation performance and temperature control capability in the process of heat dissipation and conduction by optimizing the air flow distribution, introducing the phase change material 11, and designing the heat dissipation fins 12. This design has a wide prospect in practical application and can meet the heat dissipation needs of modern high-performance power electronic products.
[0046] Although exemplary embodiments of the present disclosure have been described, it will be understood by those skilled in the art that various changes and modifications can be made thereto without departing from the spirit and scope of the present disclosure in its essence. Therefore, all changes and modifications are intended to be included within the scope of the present disclosure as defined by the claims. The present disclosure is defined by the appended claims and their equivalents.
Claims
1. An airway for a coil, characterized by, The body, two first sub-plates, two second sub-plates and a temperature relay are included. The cross section of the body is a round rectangle ring, and the two first sub-plates are symmetrically arranged inside the body along the center of the body and close to the center of the body, and each first sub-plate is parallel to the side of the body. The two sides of the first sub-plate are vertically connected to the inner surfaces of the top and bottom of the body, forming a support structure for the body. The two first sub-plates longitudinally divide the space inside the body into a first chamber, a mounting chamber and a second chamber, wherein the first chamber and the second chamber are symmetrically arranged with the mounting chamber. The two second sub-plates are arranged in the first chamber and the second chamber respectively, and the two sides of each second sub-plate are connected with the side of the body and the first sub-plate respectively. The two second sub-plates transversely divide the first chamber and the second chamber into two parts, which are the first area and the second area respectively; the second area close to the bottom is sealed, and the two ends form a sealed chamber filled with a phase change material. The second sub-plate extends a heat dissipation fin on the surface opposite to the top of the body. The temperature relay is fixedly installed in the mounting chamber, and the bottom of the temperature relay is in contact with the bottom of the body; the signal output pin of the temperature relay is led out through the side wall of the body.
2. An airway for a coil according to claim 1, wherein, The symmetric arrangement of the first sub-plate provides sufficient space for the mounting chamber, and forms multiple independent air duct channels to make the airflow uniformly distributed inside the air duct.
3. An airway for a coil according to claim 1, wherein, The phase change material absorbs heat and changes phase when the temperature rises.
4. An airway for a coil according to claim 1, wherein, The heat dissipation fin increases the heat dissipation surface area and optimizes the airflow flow path.
5. An airway for a coil as defined in claim 1, wherein, The signal output pin of the temperature relay is led out through the side wall of the body to connect with the external control system.