Small transformer
By adopting an iron core made of silicon steel sheets with "shan" structure and fixed by bolts and nuts, the problem of increased energy consumption and cost due to complex stacking of silicon steel sheets in existing transformer is solved, and the efficiency of transformer is achieved and performance improvements.
Patent Information
- Application Number
- CN202421271470.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-06-05
AI Technical Summary
The iron core of the existing transformer is made of stacked multiple silicon steel sheets, resulting in complex arrangement of silicon steel sheets, increasing energy consumption and manufacturing costs.
The iron core is made up of silicon steel sheets with "mountain" structure and is fixed by bolts and nuts, which optimizes the magnetic flux path and reduces magnetic resistance and hysteresis losses.
It improves the efficiency and performance of the transformer, reduces energy consumption and production costs, and optimizes the number of silicon steel sheets, solving the problem of increased energy consumption caused by complex arrangement.
Smart Images
Figure CN222514817U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformers, in particular to a small transformer. Background Art
[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. It is mainly composed of a primary coil, a secondary coil and an iron core (magnetic core). The iron core is the main magnetic circuit part of the transformer. Its function is to conduct magnetism, converting the electrical energy of the primary circuit into magnetic energy, and then from magnetic energy to electrical energy of the secondary circuit.
[0003] The existing iron core is usually made of stacked silicon steel sheets with a high silicon content, which requires a large number of silicon steel sheets. Multiple silicon steel sheets will not only cause the arrangement of the silicon steel sheets to be complicated, resulting in increased energy consumption, but also increase the production cost of the transformer. Utility Model Content
[0004] The purpose of the utility model is to provide a small transformer to solve the problems raised in the above background technology.
[0005] The technical solution adopted by the utility model is:
[0006] A small transformer comprises: a frame, a connection terminal arranged on the frame, and an iron core and a coil arranged inside the frame, wherein the iron core is provided with a coil, and an electronic component is electrically connected to the coil through the connection terminal;
[0007] in,
[0008] The iron core consists of an upper iron core and a lower iron core;
[0009] The upper core includes:
[0010] An upper iron yoke, a first upper iron core column, a second upper iron core column and a third upper iron core column arranged in parallel on the upper iron yoke;
[0011] The lower core includes:
[0012] A lower iron yoke, a first lower iron core column, a second lower iron core column and a third lower iron core column arranged in parallel on the lower iron yoke;
[0013] The upper iron core and the lower iron core are fixedly connected.
[0014] Preferably, the free end of the first upper core column overlaps with the free end of the first lower core column, the free end of the second upper core column overlaps with the free end of the second lower core column, and the free end of the third upper core column overlaps with the free end of the third lower core column.
[0015] Preferably, the iron core is in a "sun"-shaped structure, the upper iron core is in an inverted "mountain"-shaped structure, and the lower iron core is in a "mountain"-shaped structure.
[0016] Preferably, the coil comprises:
[0017] A primary coil, wherein the primary coil is arranged on the iron core;
[0018] A secondary coil, wherein the secondary coil is arranged on the iron core;
[0019] The secondary coil is placed inside the primary coil, and there is no contact between the primary coil and the secondary coil.
[0020] Preferably, the first upper core column and the first lower core column and the third upper core column and the third lower core column constitute an outer winding body, and the primary coil is arranged on the outer winding body.
[0021] Preferably, the second upper core column and the second lower core column constitute an inner winding body, and the secondary coil is arranged on the inner winding body.
[0022] Preferably, the connection terminal comprises:
[0023] An input terminal electrically connected to the primary coil;
[0024] An output terminal is electrically connected to the secondary coil.
[0025] Preferably, a mounting plate is fixedly provided on the frame, and the frame is fixedly connected to the wiring terminal via the mounting plate.
[0026] Preferably, the small transformer further includes:
[0027] A top cover, fixedly arranged on the top of the outer winding body, connected to the inner top wall of the frame, and provided with a heat dissipation plate;
[0028] A bottom cover, fixedly arranged at the bottom of the outer winding body, the bottom cover is connected to the inner bottom wall of the frame;
[0029] Wherein, the heat dissipation plate is fixedly connected to the edge of the top cover.
[0030] Preferably, a plurality of “U”-shaped grooves are provided on opposite sides of the top cover and the bottom cover.
[0031] Compared with the prior art, the beneficial effects of the utility model are:
[0032] The iron core in this embodiment is made of stacked silicon steel sheets in a "mountain" structure, and then fixed by bolts and nuts. This design provides a tighter fit, optimizes the path of magnetic flux, reduces magnetic resistance and hysteresis loss, and improves the efficiency and performance of the transformer. Compared with the traditional iron core made of stacked silicon steel sheets, the iron core in the utility model not only ensures the tightness between the silicon steel sheets, but also optimizes the number of silicon steel sheets that constitute the iron core, solves the problem of increased energy consumption due to the large number and complex arrangement of silicon steel sheets, and reduces the production cost of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0034] Figure 1 This is the overall schematic diagram of this application.
[0035] Figure 2 This is a schematic diagram of the relationship between the primary coil, the cover body and the mounting plate in this application.
[0036] Figure 3 It is a schematic diagram of the relationship between the cover body and the primary coil in this application.
[0037] Figure 4 This is an overall schematic diagram of the iron core and coil in this application.
[0038] Figure 5 It is a schematic diagram of the upper iron core and the lower iron core in this application.
[0039] Reference numerals:
[0040] 10. Skeleton;
[0041] 21. Primary coil; 22. Secondary coil;
[0042] 30, upper iron core; 301, upper iron yoke; 302, first upper iron core column; 303, second upper iron core column; 304, third upper iron core column;
[0043] 40, lower iron core; 401, lower iron yoke; 402, first lower iron core column; 403, second lower iron core column; 404, third lower iron core column;
[0044] 51, first mounting plate; 510, first side arm; 511, first support arm; 52, second mounting plate; 520, second side arm; 521, second support arm; 5210, mounting hole; 5211, positioning groove;
[0045] 61. Input terminal; 62. Output terminal;
[0046] 70. Top cover; 80. Bottom cover; 90. Heat sink; 100. External winding body; 200. Internal winding body; 300. U-shaped groove. DETAILED DESCRIPTION
[0047] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.
[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of the present invention are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0050] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0051] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0052] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.
[0053] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.
[0054] like Figure 1-Figure 5 As shown, the embodiment of the utility model provides a small transformer, including: a frame 10, a coil, an iron core, a mounting plate and a terminal. Among them,
[0055] The frame 10 is a rectangular parallelepiped with a cavity inside, wherein the front and rear side walls of the frame 10 are open structures, and the frame 10 is mainly used to fix the iron core in the transformer to ensure that the iron core maintains a stable position during operation. Through holes (not shown in the figure) are respectively provided at the edges of the frame 10 adjacent to the top and bottom, and the through holes are mainly used to provide connection channels between the frame 10 and other components. The frame 10 is also provided with a wire groove (not shown in the figure), and the wire groove provides a path for the winding of the transformer to pass through.
[0056] The iron core is placed in the cavity of the skeleton 10. The iron core is made of silicon steel sheets with a high silicon content. It is the main magnetic circuit part in the transformer. The function of the iron core is to form a magnetic circuit of coupled magnetic flux with very small magnetic resistance, so that the magnetic flux can be smoothly transmitted in the iron core, thereby realizing the effective conversion of electric energy. In this embodiment, the iron core includes an upper iron core 30 and a lower iron core 40. The upper iron core 30 and the lower iron core 40 are arranged relatively to each other, and their sizes and shapes are consistent. The upper iron core 30 and the lower iron core 40 are fixedly connected by bolts and nuts. The upper iron core 30 is composed of an upper iron yoke 301, a first upper iron core column 302, a second upper iron core column 303 and a third upper iron core column 304. The upper iron yoke 301, the first upper iron core column 302, the second upper iron core column 303 and the third upper iron core column 304 are made of silicon steel sheets in one piece, and the shapes of the first upper iron core column 302, the second upper iron core column 303 and the third upper iron core column 304 are consistent. The first upper core column 302, the second upper core column 303 and the third upper core column 304 are respectively fixedly arranged in parallel on the upper iron yoke 301, and the interval between the first upper core column 302 and the second upper core column 303 is consistent with the interval between the second upper core column 303 and the third upper core column 304, and the upper iron core 30 is an inverted "mountain" structure as a whole. Similarly, the lower iron core 40 is composed of the lower iron yoke 401, the first lower iron core column 402, the second lower iron core column 403 and the third lower iron core column 404, and the lower iron yoke 401, the first lower iron core column 402, the second lower iron core column 403 and the third lower iron core column 404 are made of silicon steel sheets in one piece, and the first lower iron core column 402, the second lower iron core column 403 and the third lower iron core column 404 have the same shape. The first lower core column 402, the second lower core column 403 and the third lower core column 404 are respectively fixedly arranged in parallel on the lower iron yoke 401, and the interval between the first lower core column 402 and the second lower core column 403 is consistent with the interval between the second lower core column 403 and the third lower core column 404. Unlike the upper core 30, the lower core 40 is in a "mountain" structure. The free extension ends of the first upper core column 302, the second upper core column 303 and the third upper core column 304 in the upper core 30 are overlapped with the free extension ends of the first lower core column 402, the second lower core column 403 and the third lower core column 404 in the lower core 40, respectively, to form a structure as shown in FIG. Figure 4The iron core with a "day" character structure as shown. The iron core in this embodiment is formed by overlapping silicon steel sheets with a "mountain" character structure and is fixed by bolts and nuts. Compared with the traditional way of stacking silicon steel sheets to form an iron core, the iron core in the present utility model ensures the tightness between the silicon steel sheets while optimizing the number of silicon steel sheets constituting the iron core, solves the problem of increased energy consumption caused by a large number of silicon steel sheets and complex arrangements, and reduces the manufacturing cost of the transformer. Two opposite first upper iron core columns 302 and first lower iron core columns 402 and two opposite third upper iron core columns 304 and third lower iron core columns 404 constitute the outer winding body 100, and two opposite second upper iron core columns 303 and second lower iron core columns 403 constitute the inner winding body 200. The outer winding body 100 and the inner winding body 200 mainly provide space for the coil to wind around.
[0057] The coil is one of the core components of the transformer and is mainly made of copper wire. The copper wire is wound into groups to form the coil. The coil plays multiple roles in the voltage transformer. It is not only responsible for the transfer of energy and the exchange of voltage and current, but also involves impedance control and circuit isolation and voltage stabilization. In this embodiment, the coil includes a primary coil 21 and a secondary coil 22. As Figure 4 shown, the primary coil 21 is wound around the outer winding body 100, and the secondary coil 22 is wound around the inner winding body 200. The number of turns of the primary coil 21 is more than that of the secondary coil 22. The secondary coil 22 is placed inside the primary coil 21, and there is no contact between the primary coil 21 and the secondary coil 22.
[0058] The mounting plate includes a first mounting plate 51 and a second mounting plate 52. The first mounting plate 51 is in the shape of "[", and is relatively arranged on the front and rear outer side walls of the frame 10 near the top. The first mounting plate 51 is composed of two first side arms 510 and a first support arm 511. The two first side arms 510 and the first support arm 511 are integrally formed, wherein the two first side arms 510 are arranged opposite to each other, and a connection hole corresponding to the through hole is penetrated thereon. A part of the first support arm 511 is placed above the top of the frame 10, and a wiring terminal is arranged in the middle position thereof, and the wiring terminal is made of metal copper. There are several wiring holes on the wiring terminal, and there are two wiring terminals, which serve as the input terminal 61 and the output terminal 62 of the transformer respectively. The primary coil 21 is electrically connected to the power supply (not shown in the figure) through the input terminal 61, and the secondary coil 22 is electrically connected to the electrical appliance (not shown in the figure) through the output terminal 62. The first mounting plate 51 is mainly used to fix the wiring terminal on the frame 10. The second mounting piece 52 is respectively arranged on the front and rear outer side walls adjacent to the bottom of the frame 10. Similarly, the two second side arms 520 of the second mounting piece 52 are also provided with connection holes corresponding to the through holes. The second mounting piece 52 is fixed to the frame 10 by bolts and nuts. Unlike the first mounting piece 51, the second support arm 521 of the second mounting piece 52 is in an "L" shape, one end of which is connected to the frame 10, and the other end is connected to other electronic components, such as a circuit board. The second mounting piece 52 is mainly used as a carrier for fixing the frame 10 to other electronic components. Furthermore, a mounting hole 5210 and a positioning groove 5211 are relatively penetrated on one end of the second support arm 521 connected to other electronic components, and the mounting hole 5210 and the positioning groove 5211 are arranged adjacent to each other. The main function of the positioning groove 5211 is to enable the frame 10 to be correctly positioned in the process of being fixed to other electronic components, so as to more accurately fix the frame 10 to other electronic components. When in use, the first mounting plate 51 and the second mounting plate 52 are respectively placed on the front and rear outer walls of the frame 10, and then the connecting holes on the first mounting plate 51 and the second mounting plate 52 are aligned with the through holes on the frame 10, and then the first mounting plate 51 and the second mounting plate 52 are fixed to the frame 10 with bolts and nuts, and then the frame 10 is placed on the circuit board through the positioning groove 5211, and finally the frame 10 is fixed to the circuit board through the mounting hole 5210.
[0059] Furthermore, the transformer in this embodiment also includes a cover body and a heat sink 90. The cover body includes a top cover 70 and a bottom cover 80. The top of the outer winding body 100 is provided with a top cover 70 and the bottom is provided with a bottom cover 80. The arrangement of the top cover 70 and the bottom cover 80 can protect the iron core and the primary coil 21 from external losses. The iron core will generate heat due to iron loss during normal operation, and the coil will also generate heat due to resistance loss and load loss. In order to remove the heat generated by the iron core and the coil, in this embodiment, preferably, the top cover 70 and the bottom cover 80 are made of metal iron. Metal iron has good thermal conductivity and can quickly absorb and conduct the heat generated by the iron core and the coil. In order to further enhance the heat dissipation function of the transformer, a plurality of "U"-shaped grooves 300 are provided on the opposite sides of the top cover 70 and the bottom cover 80. The opening of the "U"-shaped grooves 300 can increase the air flow speed between the top cover 70 and the bottom cover 80, thereby taking away the heat. Furthermore, a plurality of heat sinks 90 are fixedly provided at the edge of the top cover 70. The heat sinks 90 are triangular in structure. The triangular heat sinks 90 increase the heat dissipation area and further enhance the heat generated by the core and the coil.
[0060] During specific operation, the secondary coil 22 is first wound on the inner winding body 200 of the iron core, and the primary coil 21 is wound on the outer winding body 100. The power supply is electrically connected to the primary coil 21 through the input terminal 61, and the electrical appliance is electrically connected to the secondary coil 22 through the output terminal 62. When the primary coil 21 is connected to alternating current, an alternating magnetic flux is generated in the iron core. After the alternating magnetic flux passes through the secondary coil 22, an induced electromotive force will be generated in the secondary coil 22. At this time, changing the number of turns of the coil can achieve voltage conversion. In this embodiment, the number of turns of the secondary coil 22 is less than that of the primary coil 21. Therefore, the output voltage is lower than the input voltage, thereby realizing the step-down function of this transformer.
[0061] The iron core in this embodiment is made of stacked silicon steel sheets in a "mountain" structure, and then fixed by bolts and nuts. This design provides a tighter fit, optimizes the path of magnetic flux, reduces magnetic resistance and hysteresis loss, and improves the efficiency and performance of the transformer. Compared with the traditional iron core made of stacked silicon steel sheets, the iron core in the utility model not only ensures the tightness between the silicon steel sheets, but also optimizes the number of silicon steel sheets that constitute the iron core, solves the problem of increased energy consumption due to the large number and complex arrangement of silicon steel sheets, and reduces the production cost of the transformer.
[0062] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A small transformer, characterized in that: include: A frame (10), a connection terminal arranged on the frame (10), and an iron core and a coil arranged inside the frame (10), the iron core being provided with a coil, and the electronic component being electrically connected to the coil via the connection terminal; wherein: The iron core is composed of an upper iron core (30) and a lower iron core (40); The upper core (30) comprises: An upper iron yoke (301), a first upper iron core column (302), a second upper iron core column (303) and a third upper iron core column (304) arranged in parallel on the upper iron yoke (301); The lower core (40) comprises: A lower iron yoke (401), a first lower iron core column (402), a second lower iron core column (403) and a third lower iron core column (404) arranged in parallel on the lower iron yoke (401); The upper iron core (30) and the lower iron core (40) are fixedly connected.
2. The small transformer according to claim 1, characterized in that: The free end of the first upper core column (302) overlaps with the free end of the first lower core column (402), the free end of the second upper core column (303) overlaps with the free end of the second lower core column (403), and the free end of the third upper core column (304) overlaps with the free end of the third lower core column (404).
3. The small transformer according to claim 1, characterized in that: The iron core is in a "sun"-shaped structure, the upper iron core (30) is in an inverted "mountain"-shaped structure, and the lower iron core (40) is in a "mountain"-shaped structure.
4. The small transformer according to claim 1, characterized in that: The coil comprises: a primary coil (21), the primary coil (21) being arranged on the iron core; and a secondary coil (22), the secondary coil (22) being arranged on the iron core; wherein the secondary coil (22) is disposed inside the primary coil (21), and the primary coil (21) and the secondary coil (22) are not in contact with each other.
5. The small transformer according to claim 4, characterized in that: The first upper iron core column (302) and the first lower iron core column (402) and the third upper iron core column (304) and the third lower iron core column (404) form an outer winding body (100), and the primary coil (21) is arranged on the outer winding body (100).
6. The small transformer according to claim 4, characterized in that: The second upper iron core column (303) and the second lower iron core column (403) form an inner winding body (200), and the secondary coil (22) is arranged on the inner winding body (200).
7. The small transformer according to claim 4, characterized in that: The connection terminal comprises: an input terminal (61), the input terminal (61) being electrically connected to the primary coil (21); and an output terminal (62), the output terminal (62) being electrically connected to the secondary coil (22).
8. The small transformer according to claim 1, characterized in that: A mounting plate is fixedly arranged on the frame (10), and the frame (10) is fixedly connected to the connection terminal via the mounting plate.
9. The small transformer according to claim 5, characterized in that: The small transformer further comprises: a top cover (70) fixedly arranged on the top of the outer winding body (100) and connected to the inner top wall of the frame (10), wherein a heat sink (90) is arranged on the top cover (70); and a bottom cover (80) fixedly arranged on the bottom of the outer winding body (100), wherein the bottom cover (80) is connected to the inner bottom wall of the frame (10); wherein the heat sink (90) is fixedly connected to the edge of the top cover (70).
10. The small transformer according to claim 9, characterized in that: A plurality of U-shaped grooves (300) are provided on opposite sides of the top cover (70) and the bottom cover (80).