Circuit breaker contact protection box
By designing a heat dissipation structure on the circuit breaker and utilizing a combination of heat conduction and air circulation, the problem of excessive temperature rise in the circuit breaker is solved, achieving efficient heat dissipation and stable installation, thereby improving the service life and safety of the circuit breaker.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2026-03-17
AI Technical Summary
Existing circuit breakers generate excessive Joule heat when electricity flows through them, leading to copper oxidation and loss and a decrease in the insulation performance of the plastic casing. Traditional methods of increasing the cross-sectional area of the conductive circuit occupy a large space and have poor heat dissipation.
Design a heat dissipation structure including a main body, heat dissipation slots and airflow channels. By combining heat conduction and airflow, the heat dissipation surface is increased and airflow circulation is guided to improve heat dissipation efficiency.
It effectively reduces the temperature rise of the circuit breaker, prevents copper oxidation and plastic shell aging, and improves the stability and vibration resistance of the heat dissipation components.
Smart Images
Figure CN224006396U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat dissipation technology, and in particular to a heat dissipation structure and a circuit breaker contact protection box. Background Technology
[0002] Circuit breakers are protective components in power distribution systems, with over 80% of the power flowing through them to reach end-user devices. When power flows through a circuit breaker, it generates a large amount of Joule heat, causing the circuit breaker's temperature to rise. When the temperature reaches above 160°C, the internal copper material will rapidly oxidize and degrade, and the plastic casing will also age faster due to the high temperature, leading to a decline in insulation performance.
[0003] Therefore, temperature rise is a core issue for the safe and reliable operation of circuit breakers. Traditional designs aim to reduce Joule heating and lower temperature rise by increasing the cross-sectional area of the internal conductive circuit of the circuit breaker. This method occupies a large space and consumes a lot of precious metals such as copper. In addition, the use of a large amount of copper occupies the internal space of the circuit breaker, making it difficult to implement ventilation and heat dissipation, resulting in poor heat dissipation and significantly reducing the reduction in operating temperature rise caused by increasing copper content. Utility Model Content
[0004] In this section, as well as in the abstract and title of this application, some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract, and the title of this application. Such simplifications or omissions shall not be used to limit the scope of this utility model.
[0005] In view of the above-mentioned problems in the prior art, this utility model is proposed.
[0006] The purpose of this invention is to provide a heat dissipation structure that solves the problem of slow heat dissipation.
[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a heat dissipation structure, which includes a main body, a heat dissipation groove disposed on the surface of the main body, and a flow channel penetrating the main body for guiding the airflow of the heat dissipation groove.
[0008] As a preferred embodiment of the heat dissipation structure of this utility model, the heat dissipation slot array is provided with multiple slots, and the main body includes a heat dissipation fin formed between two of the heat dissipation slots.
[0009] As a preferred embodiment of the heat dissipation structure of this utility model, the array of drainage grooves is provided with multiple grooves.
[0010] In a preferred embodiment of the heat dissipation structure of this utility model, the direction of the drainage groove is perpendicular to the direction of the heat dissipation groove.
[0011] As a preferred embodiment of the heat dissipation structure of this utility model, the flow channel includes a flow channel, and the two ends of the flow channel are respectively provided with an air inlet and an air outlet, and the horizontal height of the air outlet is higher than that of the air inlet.
[0012] As a preferred embodiment of the heat dissipation structure of this utility model, the air inlet is arranged in a plurality of arrays along the side wall of the heat sink, the flow channel is disposed inside the heat sink, and both the air inlet and the air outlet are connected to the outside.
[0013] As a preferred embodiment of the heat dissipation structure of this utility model, a first movable channel is provided at the center of the main body.
[0014] As a preferred embodiment of the heat dissipation structure of this utility model, the outer wall of the main body is provided with a mounting block, and the surface of the mounting block is provided with a through hole penetrating the mounting block.
[0015] The beneficial effects of the heat dissipation structure of this utility model are as follows: it directly contacts the object that needs to dissipate heat with the main body, and transfers heat directly to the main body through heat conduction, expanding the heat dissipation surface of the object. At the same time, through the complementary holes, it guides airflow and further improves heat dissipation efficiency.
[0016] Another objective of this invention is to provide a circuit breaker contact protection box, which aims to solve the problem of heat dissipation component installation.
[0017] To solve the above-mentioned technical problems, the present invention also provides the following technical solution: a circuit breaker contact protection box, which includes a heat dissipation structure; and a mounting box and an array of circuit breaker contacts arranged inside the mounting box.
[0018] As a preferred embodiment of the circuit breaker contact protection box of this utility model, the mounting box is provided with a bracket that can be connected to the mounting block, and the bracket is provided with a through screw hole.
[0019] The beneficial effects of the circuit breaker contact protection box of this utility model are: making the heat sink more stable, reducing the shaking caused by vibration, and preventing damage to the heat sink or other components. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0021] Figure 1 This is a front view of the main body of the present invention, which has an installation block at one end.
[0022] Figure 2 This is a side view of the main body of the present invention, which has a mounting block at one end.
[0023] Figure 3 This is a side view of the main body of this utility model placed horizontally.
[0024] Figure 4 In this utility model Figure 3 A cross-sectional diagram of “AA” in the diagram.
[0025] Figure 5 This is a side view of the main body of the present invention, which has mounting blocks at both ends.
[0026] Figure 6 This is a three-dimensional schematic diagram of the main body of this utility model.
[0027] Figure 7 This is a front view of the main body of the present invention, which has an installation block at one end.
[0028] Figure 8 In this utility model Figure 7 A cross-sectional view of “BB” in the middle.
[0029] Figure 9 This is a schematic diagram of the mounting box in this utility model. Detailed Implementation
[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0032] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.
[0033] Example 1
[0034] Reference Figures 1-4This is the first embodiment of the present invention. This embodiment provides a heat dissipation structure, including a main body 100, a heat dissipation groove 101 disposed on the surface of the main body 100, and a flow channel 102 penetrating the main body 100 to guide the airflow of the heat dissipation groove 101.
[0035] The main body 100 has recessed heat dissipation grooves 101 on its surface, primarily to increase the surface area of the main body 100 in contact with air, thereby increasing the heat dissipation surface. Secondly, drainage grooves 102 connect the heat dissipation grooves 101 to the outside, such as... Figure 4 As shown, the heat dissipation groove 101 can be recessed from top to bottom to form a multi-groove structure; the drainage groove 102 is arranged in an array around the side of the main body 100; the air inside the heat dissipation groove 101 will become hot, and taking advantage of the characteristic of hot air moving upward, the hot air inside the heat dissipation groove 101 will start to move upward, which will then drive the air inside the heat dissipation groove 101 to move upward. Then, the external air is transported into the heat dissipation groove 101 through the drainage groove 102 to replace the internal air, thereby achieving better heat dissipation.
[0036] Preferably, the heat dissipation slots 101 array is provided in multiple ways, and the main body 100 includes a heat sink 103 formed between two heat dissipation slots 101.
[0037] Multiple heat dissipation slots 101 are provided, forming multiple cavity structures in the main body 100, further increasing the contact area between the main body 100 and the air; for example Figure 4 As shown, two sets of heat sinks 103 can be symmetrically arranged. In order to better promote the circulation of hot air, the openings of the heat sinks 101 can be both upward or the heat sinks 101 can penetrate the main body 100 from top to bottom.
[0038] Preferably, the array of drainage channels 102 is provided with multiple channels.
[0039] Multiple drainage channels 102 are arranged around the bottom of the heat dissipation channel 101, and the drainage channels 102 connect the outside of the main body 100 with the inside of the heat dissipation channel 101. The air inside the heat dissipation channel 101 is heated and begins to be transported upward. The internal air pressure decreases, and the air outside the main body 100 begins to be drawn into the heat dissipation channel 101 along the drainage channels 102, thereby realizing air exchange.
[0040] Preferably, the direction of the drainage groove 102 is perpendicular to the direction of the heat dissipation groove 101.
[0041] The heat dissipation trough 101 extends vertically, and the air diversion trough 102 extends horizontally to achieve a vertical distribution. The air inside the heat dissipation trough 101 moves upward and draws external air into the heat dissipation trough 102 through the air diversion trough 102, thus achieving air circulation. The air carries away heat, thereby achieving heat dissipation.
[0042] In summary, as Figure 3 As shown, the main body 100 is horizontally mounted on the outer wall of the structure requiring heat dissipation, or as... Figure 4 As shown, the main body 100 is vertically installed on the outer wall of the structure that needs heat dissipation; then, the heat is dissipated along the main body through heat conduction, and the heat is transferred to the interior of the main body 100, and then comes into contact with the air to achieve heat dissipation. At the same time, the principle of hot air flowing upward is used to achieve air circulation inside the heat dissipation groove 101 in conjunction with the drainage groove 102, thereby increasing the heat dissipation efficiency.
[0043] Example 2
[0044] Reference Figures 5-8 The second embodiment of this utility model includes a flow channel 102 comprising a flow channel 102a, with an air inlet 102a-1 and an air outlet 102a-2 respectively at both ends of the flow channel 102a, and the horizontal height of the air outlet 102a-2 is higher than that of the air inlet 102a-1.
[0045] Preferably, multiple air inlets 102a-1 are arranged along the side wall of the heat sink 103, the flow channel 102a is disposed inside the heat sink 103, and both the air inlets 102a-1 and the air outlets 102a-2 are connected to the outside.
[0046] The flow channel 102a in the drainage groove 102 is set in the heat sink 103 formed by two heat sinks 101, which reduces the heat dissipation space. The air inlet 102a-1 is set near the bottom of the heat sink 101, and the air outlet 102a-2 is set on the upper surface of the heat sink 103. The advantage of this design is that when heat is conducted, since the space of the flow channel 102a is smaller than that of the heat sink 101, the temperature inside the flow channel 102a will rise first. Then, the gas inside the heat sink 101 will first enter the flow channel 102a through the air inlet 102a-1, forming air circulation. Then, the gas will move from the top of the heat sink 101 to the bottom, and then enter the flow channel 102a through the air inlet 102a-1, and then be discharged from the air outlet 102a-2, thus preferentially forming air circulation. At the same time, it can also drive the gas flow inside the heat sink 101.
[0047] Preferably, the main body 100 has a first active channel 105 at its center.
[0048] A first channel 105 is provided at the center of the main body 100, and the main body 100 is installed on the structure that needs heat dissipation through the first movable channel 105. Heat is conducted from the center to the surrounding area, effectively improving heat dissipation efficiency.
[0049] Preferably, the outer wall of the main body 100 is provided with a mounting block 104, and the surface of the mounting block 104 is provided with a through hole 104a penetrating the mounting block 104.
[0050] Among them, mounting blocks 104 are fixed at one or both ends of the main body 100, and the mounting blocks 104 are designed with through holes 104a. The main purpose is to cooperate with the bolt connection structure of the current mainstream equipment. The heat sink can be fixed to the housing or other structure of the equipment through the mounting blocks 104 to prevent the main body 100 from shaking or falling off.
[0051] In summary, the main body 100 passes through the structure that needs heat dissipation through the first active channel 105, and then the mounting block 104 is fixed to the surface of the structure that needs heat dissipation by bolts. When heat begins to be conducted through the main body 100, the heat begins to exchange heat with the air through the surface of the main body 100. Then, taking advantage of the characteristic of hot air moving upward, the air first flows upward from the flow channel 102a. Then, there is a certain negative pressure inside, which drives the air circulation inside the heat dissipation slot 101.
[0052] Example 3
[0053] Reference Figure 9 This is the third embodiment of the present invention, which further provides a circuit breaker contact protection box. It includes a mounting box 200 and circuit breaker contacts A arrayed inside the mounting box 200.
[0054] The mounting box 200 contains multiple circuit breaker contacts A. The main body 100 is fitted onto the surface of the circuit breaker contacts A, meaning that the circuit breaker contacts A pass through the first movable channel 105 of the main body 100.
[0055] The mounting box 200 is internally equipped with a bracket 201 that can be connected to the mounting block 104.
[0056] Among them, bracket 201 is installed on the inner wall of mounting box 200 using bolts, such as Figure 9 As shown, the bracket 201 can be L-shaped, with one side fixed to the upper inner wall of the mounting box 200 by bolts, and the other side fixed to the mounting block 104 by bolts to prevent the heat dissipation structure from shaking.
[0057] When in use, the bracket 201 is fixed to the upper inner wall of the mounting box 200 with bolts on one side and to the mounting block 104 with bolts on the other side to prevent the heat dissipation structure from shaking.
[0058] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.
[0059] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.
[0060] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.
[0061] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A circuit breaker contact protection box characterized by: The application relates to a circuit breaker, which comprises a mounting box (200), circuit breaker contacts (A) arranged in the mounting box (200), and a heat dissipation structure, The heat dissipation structure comprises a main body (100), heat dissipation grooves (101) arranged on the surface of the main body (100), and drainage grooves (102) penetrating through the main body (100) and used for guiding air flow of the heat dissipation grooves (101).
2. The circuit breaker contact protection box of claim 1, wherein: The heat dissipation grooves (101) are arranged in an array, and the main body (100) comprises heat dissipation fins (103) formed between two heat dissipation grooves (101).
3. The circuit breaker contact protection box of claim 1 or 2, wherein: The drainage grooves (102) are arranged in an array.
4. The circuit breaker contact protection box of claim 1 or 2, wherein: The direction of the drainage grooves (102) is perpendicular to the direction of the heat dissipation grooves (101).
5. The circuit breaker contact protection box of claim 2, wherein: The drainage grooves (102) comprise flow channels (102a), air inlets (102a-1) and air outlets (102a-2) arranged at two ends of the flow channels (102a) respectively, and the horizontal height of the air outlet (102a-2) is higher than that of the air inlet (102a-1).
6. The circuit breaker contact protection box of claim 5, wherein: The air inlets (102a-1) are arranged in an array along the side wall of the heat dissipation fin (103), the flow channels (102a) are arranged in the heat dissipation fin (103), and the air inlets (102a-1) and the air outlets (102a-2) are both communicated with the outside.
7. The circuit breaker contact shield can according to any of claims 1 to 2, 5, 6, characterized in that: A first movable channel (105) is arranged at the center position of the main body (100).
8. The circuit breaker contact shield can according to any one of claims 1-2, 5, 6, characterized in that: An installation block (104) is arranged on the outer wall of the main body (100), and a through hole (104a) penetrating through the installation block (104) is arranged on the surface of the installation block (104).
9. The circuit breaker contact shield can according to any of claims 1 to 2, 5, 6, characterized in that: A support (201) connectable with the installation block (104) is arranged in the mounting box (200), and a screw hole (201a) penetrating through the support (201) is arranged.