A low-loss high-permeability composite core transformer

Abstract

The present application relates to the technical field of power equipment, in particular to a low-loss high-permeability composite magnetic core transformer, comprising a transformer body with a cavity one inside for containing oil, heat dissipation fins arranged on the lateral wall of the transformer body and hollow inside, a transfer member arranged in the cavity one, a shunt member arranged in the cavity one and a pumping assembly arranged in the transfer member, wherein the transfer member is internally formed with a cavity two, the shunt member is internally formed with a cavity three, the cavity three and the cavity two are communicated, and the cavity three is communicated with the heat dissipation fins through the liquid inlet and the inner cavity of the heat dissipation fins, and the pumping assembly is used for pumping the oil in the cavity one into the cavity two. With the working of the pumping assembly, the transfer member evenly distributes the oil in the cavity two into the cavity three, and the shunt member evenly distributes the oil in the cavity three to the inner cavities of all the heat dissipation fins, so that the oil forms a circulating flow between the inner cavities of the heat dissipation fins and the cavity one, thereby facilitating to improve the heat dissipation effect of the transformer body.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, and in particular to a low-loss, high-permeability composite core transformer. Background Technology

[0002] Low-loss, high-permeability composite core transformers are electromagnetic components that utilize high-permeability soft magnetic composite materials for their cores and undergo specific processing to reduce hysteresis and eddy current losses. Compared to traditional silicon steel core transformers or ferrite core transformers, they offer advantages such as smaller size, lighter weight, and higher efficiency, making them particularly suitable for high-frequency power supplies, photovoltaic inverters, 5G base station power supplies, and aerospace applications.

[0003] Common low-loss, high-permeability composite core transformers include amorphous alloy transformers. Related technologies, such as Chinese patent CN218730283U, disclose a high-reliability oil-immersed amorphous alloy distribution transformer, which includes a transformer body and a blower mechanism. The transformer body has an internal chamber for containing oil, and several hollow heat dissipation fins are arranged around the transformer body. The internal cavities of the heat dissipation fins are connected to the internal chamber of the transformer body, allowing oil exchange between the two. The blower mechanism blows air onto the heat dissipation fins to dissipate heat from the oil, thereby cooling the transformer body.

[0004] However, due to the viscosity of the oil and the fact that the windings inside the transformer body can obstruct the flow of the oil, the combined effect of these two factors leads to poor oil flow. Consequently, the oil exchange efficiency between the internal cavity of the heat dissipation fins and the internal cavity of the transformer body is low, thus affecting the heat dissipation effect on the transformer body. Summary of the Invention

[0005] Therefore, it is necessary to provide a low-loss, high-permeability composite core transformer to address the problem of poor heat dissipation in current transformers.

[0006] The above objectives are achieved through the following technical solutions: A low-loss, high-permeability composite core transformer, comprising: The transformer body has an internal chamber for containing oil. The heat dissipation fins are hollow and installed on the side wall of the transformer body. The side wall of the heat dissipation fins facing the transformer body has an inlet and an outlet. The inner cavity of the heat dissipation fins is connected to the chamber through the outlet. There are several heat dissipation fins, which are arranged around the transformer body. A transfer component is provided in chamber one, and a chamber two for containing oil is formed inside the transfer component; a flow divider is provided in chamber one, and a chamber three for containing oil is formed inside the flow divider. Chamber three is connected to chamber two and is also connected to the inner cavity of the heat dissipation fins through the liquid inlet. A suction assembly located within the transfer unit and used to draw oil from chamber one into chamber two. As the suction assembly operates, the transfer component evenly distributes the excess oil in chamber two to chamber three, and the diversion component evenly distributes the excess oil in chamber three to all the inner cavities of the heat dissipation fins.

[0007] Furthermore, the suction assembly includes a piston cylinder embedded in chamber two; the piston cylinder has a bottom opening and is unidirectionally connected to chamber one through its bottom opening; a drain port is provided on the side wall of the piston cylinder, and the piston cylinder is unidirectionally connected to chamber two through the drain port; a piston plate is inserted inside the piston cylinder, and the piston plate and the piston cylinder form a piston fit; when the piston plate slides axially, the oil in chamber one enters chamber two sequentially through the bottom opening of the piston cylinder, the inside of the piston cylinder, and the drain port.

[0008] Furthermore, a helical rod is rotatably inserted inside the piston cylinder. Two helical grooves are formed on the side wall of the helical rod. The two helical grooves rotate in opposite directions and are arranged crosswise, with their starting and ending points coinciding. A piston plate is movably sleeved on the helical rod, and a slider is provided at the contact position with the helical rod. The slider is slidably inserted into the helical groove. The piston plate also forms a sliding fit with the piston cylinder to limit the rotation of the piston plate. The low-loss, high-permeability composite magnetic core transformer also includes a drive component for providing the driving force for the rotation of the helical rod.

[0009] Furthermore, the drive unit is located on the top of the transformer body and has a wind energy collection section and a power transmission section. The wind energy collection section is used to collect wind energy, and the power transmission section is used to transmit the wind energy collected by the wind energy collection section to the screw rod.

[0010] Furthermore, the driving component is a non-powered wind cap.

[0011] Furthermore, the shunt component has an annular structure, and chamber three is formed inside the side wall of the shunt component; an intermediate liquid port is also provided on the side wall of the heat dissipation fins facing the transformer body. The intermediate liquid port, inlet, and outlet are arranged vertically, with the intermediate liquid port located between the inlet and outlet and close to the inlet; an annular partition is provided inside chamber three, dividing chamber three into an inner annular cavity and an outer annular cavity along the inside and outside. The inner annular cavity is connected to chamber two, and the outer annular cavity is connected to the inner cavity of the heat dissipation fins through the inlet; multiple guide tubes are provided circumferentially on the inner side wall of the shunt component, connecting the inner annular cavity and chamber one, and are inclined to allow the liquid to flow from the inner annular cavity to the outer annular cavity. The oil flowing out of the guide pipe has a tendency to rotate; multiple notches are evenly distributed along the circumference of the annular baffle, and the notches are located at the connection between the inner annular cavity and the second chamber; two baffles are elastically rotatably installed at each notch, and the baffles have corresponding first and second positions before and after rotation. When the outside wind speed is less than the preset wind speed, the baffle is in the first position, the notch is closed, the inner annular cavity and the outer annular cavity are isolated, and the second chamber is connected to the first chamber through the inner annular cavity, the guide pipe, and the second chamber. When the outside wind speed is greater than the preset wind speed, the baffle is in the second position, the notch is open, the second chamber and the guide pipe are isolated, and the second chamber is connected to the outer annular cavity, the liquid inlet, and the inner cavity of the heat dissipation fins.

[0012] Furthermore, a ventilation section is provided on the top of the transformer body, and a ventilation chamber is formed between the ventilation section and the transformer body. The ventilation chamber connects the inner cavity of the non-powered ventilator and the space above the heat dissipation fins.

[0013] Furthermore, there are multiple suction components.

[0014] Furthermore, the spiral rods of multiple suction components rotate synchronously; the spiral grooves on all spiral rods are of equal length; when the number of spiral rods is odd, the pitch of the spiral groove on the middle spiral rod is greater than the pitch of the spiral grooves on the other spiral rods; when the number of suction components is even, the pitch of the spiral grooves on the two middle spiral rods is equal and greater than the pitch of the spiral grooves on the other spiral rods.

[0015] Furthermore, the spiral rods of multiple suction components rotate synchronously; the pitch of the spiral grooves on all spiral rods is equal; when the number of spiral rods is odd, the length of the spiral groove on the middle spiral rod is greater than the length of the spiral grooves on the other spiral rods; when the number of suction components is even, the lengths of the spiral grooves on the two middle spiral rods are equal and greater than the lengths of the spiral grooves on the other spiral rods.

[0016] The beneficial effects of this invention are: This invention relates to a low-loss, high-permeability composite core transformer. By incorporating a transfer component, a shunt component, and a suction assembly, and utilizing the uniform shunt characteristics of the transfer component and the shunt component, during transformer operation, the suction assembly first draws oil from chamber one into chamber two. The transfer component then evenly distributes excess oil from chamber two into chamber three. The shunt component then evenly distributes excess oil from chamber three into the inner cavities of all heat dissipation fins. Excess oil in the inner cavities of the heat dissipation fins then returns to chamber one, forming a circulating flow. Thus, the forced flow of oil improves the heat dissipation effect of the transformer body.

[0017] Furthermore, by setting the driving component to a non-powered wind cap, natural wind power can be converted into the power for forced oil flow, which is not only green and environmentally friendly, but also conducive to energy saving.

[0018] Furthermore, by setting up annular baffles, guide pipes, and baffles, and utilizing the separating characteristics of the annular baffles, the three chambers are divided into an inner annular cavity and an outer annular cavity along their inner and outer sides. During transformer operation, when the external wind speed is low, the gap closes, isolating the inner and outer annular cavities. The oil that enters from chamber one into chamber two then returns to chamber one through the guide pipes. Furthermore, thanks to the guiding characteristics of the guide pipes, they tend to rotate the oil in chamber one. This allows for the utilization of wind power even in low wind conditions, and also... The rotation of the oil in chamber one reduces the risk of excessively high local temperatures in the transformer, thus ensuring the overall temperature uniformity of the transformer. When the outside wind speed is high, the rotational characteristics of the baffle open the gap, isolating chamber two from the guide pipe. This allows the oil entering chamber two from chamber one to then pass through the outer ring cavity and the inlet into the inner cavity of the heat dissipation fins. The oil in the inner cavity of the heat dissipation fins then returns to chamber one, forming a circulation. This forced flow of oil improves the heat dissipation effect of the transformer body.

[0019] Furthermore, by setting up a ventilation section, and forming a ventilation chamber between the ventilation section and the transformer body, and utilizing the characteristic that the ventilation chamber connects the inner cavity of the non-powered vent cap and the space above the heat dissipation fins, during the operation of the transformer, in the presence of wind, the non-powered vent cap can draw in air near the heat dissipation fins to achieve heat dissipation of the leeward side of the heat dissipation fins, thereby improving the overall heat dissipation uniformity of the heat dissipation fins.

[0020] Furthermore, by setting multiple suction components, the heat dissipation effect on the transformer can be improved by increasing the circulation efficiency of the oil when multiple suction components work together during the transformer's operation.

[0021] Furthermore, by setting the length of the spiral grooves on all the spiral rods to be equal, and when the number of spiral rods is odd, the pitch of the spiral groove on the middle spiral rod is greater than the pitch of the spiral grooves on the other spiral rods; when the number of suction components is even, the pitch of the spiral grooves on the two middle spiral rods is equal and greater than the pitch of the spiral grooves on the other spiral rods. During the operation of the transformer, since the pitch of the spiral groove on the middle spiral rod is the largest, the suction frequency of the middle suction component is the highest when the spiral rod rotates for the same number of revolutions. This results in the highest circulation efficiency of the oil in the middle of the chamber, thus adapting to the situation of excessively high temperature in the middle of the chamber and achieving targeted heat dissipation.

[0022] Furthermore, by setting the pitch of the spiral grooves on all the spiral rods to be equal, and when the number of spiral rods is odd, the length of the spiral groove on the middle spiral rod is greater than the length of the spiral grooves on the other spiral rods; when the number of suction components is even, the lengths of the spiral grooves on the two middle spiral rods are equal and greater than the lengths of the spiral grooves on the other spiral rods. During the operation of the transformer, since the spiral groove on the middle spiral rod is the longest, the suction amplitude of the middle suction component is the largest when the spiral rods rotate the same number of times, thus making the circulation volume of oil in the middle of the chamber the highest. This can adapt to the situation of excessively high temperature in the middle of the chamber and achieve targeted heat dissipation. Attached Figure Description

[0023] Figure 1 A three-dimensional structural schematic diagram of a low-loss, high-permeability composite core transformer provided in an embodiment of the present invention; Figure 2 A front view schematic diagram of a low-loss, high-permeability composite core transformer provided in an embodiment of the present invention; Figure 3 for Figure 2 Sectional view along the AA direction; Figure 4 for Figure 3 A magnified schematic diagram of the structure at point X in the middle; Figure 5 A side view of the low-loss, high-permeability composite core transformer provided in an embodiment of the present invention; Figure 6 for Figure 5 Sectional view along the BB direction; Figure 7 A cross-sectional structural schematic diagram of a low-loss, high-permeability composite core transformer provided in an embodiment of the present invention; Figure 8 for Figure 7 A magnified schematic diagram of the structure at point Y in the middle; Figure 9An exploded view of the components of a low-loss, high-permeability composite core transformer provided in an embodiment of the present invention; Figure 10 A three-dimensional structural schematic diagram of a portion of the low-loss, high-permeability composite core transformer provided in an embodiment of the present invention; Figure 11 An exploded view of some components of a low-loss, high-permeability composite core transformer provided in an embodiment of the present invention. Figure 12 A three-dimensional cross-sectional view of the shunt component of a low-loss, high-permeability composite core transformer provided in an embodiment of the present invention; Figure 13 for Figure 12 A magnified schematic diagram of the structure at point Z in the middle.

[0024] in: 1. Transformer body; 101. Enclosure; 102. Enclosure cover; 103. Chamber 1; 104. Support frame; 105. Windings; 2. Heat dissipation fins; 201. Liquid inlet; 202. Liquid outlet; 203. Intermediate liquid outlet; 3. Transfer component; 301. Chamber 2; 302. Protrusion; 303. Connecting pipe; 4. Diverter; 401. Chamber 3; 4011. Inner annular cavity; 4012. Outer annular cavity; 402. Diverter pipe; 403. Annular baffle; 4031. Notch; 404. Guide pipe; 405. Baffle; 4051. Diverter plate 1; 4052. Diverter plate 2; 5. Suction assembly; 501. Piston cylinder; 5011. Drain port; 502. One-way valve one; 503. One-way valve two; 504. Piston plate; 505. Spiral rod; 5051. Clamping plate; 6. Non-powered wind cap; 601. Center rod; 7. Ventilation section; 701. Substrate; 702. Collection body; 703. Air duct; 8. Ventilation chamber; 9. Synchronization component; 901. Transmission wheel; 902. Synchronization belt. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0026] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage," unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] The following reference Figures 1 to 13 The present invention describes a low-loss, high-permeability composite core transformer, which is particularly suitable for high-frequency power supplies, photovoltaic inverters, 5G base station power supplies, and aerospace applications.

[0029] Specifically, the low-loss, high-permeability composite core transformer is configured to include a transformer body 1, which has a housing 101 with an open top. The top of the housing 101 is provided with a cover 102, which is used to close the open top of the housing 101 and together with the housing 101, forms a chamber 103 for containing oil. The bottom of the cover 102 is provided with a bracket 104, on which a winding 105 is provided.

[0030] To dissipate heat from the transformer, heat dissipation fins 2 are provided on the side wall of the transformer body 1. The heat dissipation fins 2 are plate-shaped structures, vertically arranged, and specifically installed on the outer side wall of the housing 101. The heat dissipation fins 2 are hollow inside and open on the side wall facing the transformer body 1. The opening of the inner cavity of the heat dissipation fins 2 is connected to the chamber 103, allowing oil to be exchanged between the inner cavity of the heat dissipation fins 2 and the chamber 103. There are several heat dissipation fins 2, which are arranged around the transformer body 1. The transformer body 1 is also provided with a blower mechanism, which is used to blow air onto the heat dissipation fins 2 to dissipate heat from the transformer by cooling the oil.

[0031] However, since oil has a certain viscosity, and viscosity characterizes its ability to resist internal friction during flow, the internal friction between molecules generates flow resistance when oil flows. This resistance directly slows down the natural convection rate of the oil. Especially under low temperature conditions, the viscosity of the oil increases as the temperature decreases, the flow resistance further increases, and the efficiency of heat transfer through the oil also decreases.

[0032] Meanwhile, the crisscrossing three-dimensional arrangement of the windings 105 divides the interior of chamber 103 into multiple small and irregular spatial regions, disrupting the continuity of oil convection circulation. The structural obstruction of the windings 105 not only compresses the effective flow cross-section of the oil and increases local flow resistance, but also easily forms dead zones for oil stagnation in areas such as gaps and corners of the windings 105. This prevents the oil in these areas from circulating and exchanging with the cooler oil on the side of the heat dissipation fins 2 in a timely manner. Heat is difficult to conduct to the heat dissipation fins 2 through the oil, ultimately causing heat accumulation inside the transformer and a significant deterioration in the overall heat dissipation effect.

[0033] Based on this, in the low-loss, high-permeability composite core transformer provided in this embodiment of the invention, an inlet 201 and an outlet 202 are provided on the side wall of the heat dissipation fin 2 facing the transformer body 1. The inner cavity of the heat dissipation fin 2 is connected to the first chamber 103 through the outlet 202. A transfer component 3 is provided in the first chamber 103. The transfer component 3 is specifically located on the top of the support 104 and has a box-type structure and is horizontally arranged. The transfer component 3 has a second chamber 301 for containing oil. A protrusion 302 protrudes downward from the bottom of the transfer component 3. The protrusion 302 can be integrally formed with the support 104. A diverter 4 is also provided in the first chamber 103. The diverter 4 and the transfer component 3 are located at the same height and have a square ring structure. A third chamber 401 for containing oil is formed inside the side wall.

[0034] The transfer component 3 has multiple connecting pipes 303 on its side wall. The outer ends of the connecting pipes 303 are simultaneously and radially sealed and inserted into the distribution component 4, which not only connects the second chamber 301 and the third chamber 401, but also facilitates the support of the distribution component 4. The multiple connecting pipes 303 are evenly arranged circumferentially, allowing the transfer component 3 to evenly distribute the oil in the second chamber 301 into the third chamber 401. The number of connecting pipes 303 can be four, and they are located at the four corners of the transfer component 3. The distribution component 4 has multiple distribution pipes 402 on its outer side wall. The outer ends of the distribution pipes 402 are simultaneously and radially sealed and inserted into the liquid inlet 201, allowing the third chamber 401 to connect with the inner cavity of the heat dissipation fins 2 through the liquid inlet 201. The multiple distribution pipes 402 are arranged circumferentially and are respectively set to correspond to the heat dissipation fins 2, allowing the distribution component 4 to evenly distribute the oil in the third chamber 401 into the inner cavity of all the heat dissipation fins 2. A suction assembly 5 is installed in the transfer unit 3 and is used to draw oil from chamber 103 into chamber 201.

[0035] During the operation of the transformer, the oil in chamber 103 is first drawn into chamber 2 301 by the suction component 5. Then, the transfer component 3 distributes the oil in chamber 2 301 evenly into chamber 3 401 through the connecting pipe 303. Then, the diverter 4 distributes the oil in chamber 3 401 evenly into the inner cavity of all the heat dissipation fins 2 through the diverter pipe 402. The oil in the inner cavity of the heat dissipation fins 2 then returns to chamber 103, thus forming a circulation.

[0036] This circulation process continues, and through the forced drive of the suction component 5, the oil is directionally, uniformly, and evenly circulated between chamber 103, chamber 2 301, chamber 3 401 and the inner cavity of the heat dissipation fins 2. This effectively accelerates the flow rate of the oil, reduces the formation of dead zones where the oil stagnates, and significantly improves the heat transfer efficiency of the oil. Thus, through the forced flow of the oil, the heat dissipation effect on the transformer body 1 is significantly enhanced, solving the problem of low heat dissipation efficiency caused by poor oil flow in traditional transformers.

[0037] In one embodiment, the suction assembly 5 may include a piston cylinder 501 embedded in chamber two 301. The piston cylinder 501 is vertically arranged, with its top sealed through the transfer member 3 and fixed to the bottom of the cover 102. The bottom of the piston cylinder 501 passes through the protrusion 302 of the transfer member 3 and has an opening. The piston cylinder 501 communicates with chamber one 103 through its bottom opening. A one-way valve 502 is provided at the bottom opening of the piston cylinder 501. Under the action of the one-way valve 502, the interior of the piston cylinder 501 and chamber one 103 are in one-way communication, so that the oil in chamber one 103 can only flow into the interior of the piston cylinder 501 in one direction. The one-way valve 502 may be a spring-type structure. A drain port 5011 is provided on the side wall of the piston cylinder 501, and the piston cylinder 501 is connected to the second chamber 301 through the drain port 5011. A one-way valve 503 is provided at the drain port 5011. Under the action of the one-way valve 503, the inside of the piston cylinder 501 is connected to the second chamber 301 in one direction through the drain port 5011, so that the oil inside the piston cylinder 501 can only flow into the second chamber 301 in one direction through the drain port 5011. The one-way valve 503 can be designed as a spring-loaded structure. A piston plate 504 is inserted inside the piston cylinder 501, forming a piston-like fit between the piston plate 504 and the piston cylinder 501. When the piston plate 504 slides axially along the piston cylinder 501, the volume and pressure of the chamber below the piston plate 504 inside the piston cylinder 501 change, creating a pressure difference between the inner and outer sides of the one-way valve 502 and the one-way valve 503. Utilizing the one-way opening characteristics of the one-way valves 502 and 503, the oil in chamber 103 is driven sequentially through the bottom opening of the piston cylinder 501, the interior of the piston cylinder 501, and the drain port 5011 into chamber 201. The piston plate 504 remains above the drain port 5011, ensuring the stability of the suction process.

[0038] Preferably, there can be multiple drain ports 5011, which are evenly distributed circumferentially to ensure that the oil inside the piston cylinder 501 can be evenly discharged into the second chamber 301, thereby ensuring that the oil inside the second chamber 301 can be evenly transmitted into the third chamber 401 through the connecting pipe 303.

[0039] As the piston plate 504 slides upward axially, the volume of the chamber below the piston plate 504 inside the piston cylinder 501 increases, and the pressure decreases, creating a pressure difference between the inner and outer sides of one-way valve 502 and one-way valve 503. As the piston plate 504 continues to slide upward, the pressure difference between the inner and outer sides of one-way valve 502 gradually increases, but due to its one-way characteristic, it will not open. Similarly, the pressure difference between the inner and outer sides of one-way valve 503 gradually increases and subsequently opens. Under the action of this pressure difference, the oil in chamber 103 enters the piston cylinder 501 through the bottom opening. When the piston plate 504 moves upward to its limit position, it then moves downward axially.

[0040] As the piston plate 504 slides downward axially, the volume of the chamber below the piston plate 504 inside the piston cylinder 501 decreases, and the pressure increases, causing the second check valve 503 to close. As the piston plate 504 continues to slide downward, the pressure difference between the inside and outside of the second check valve 503 gradually increases, but due to its one-way characteristic, it will not open. Similarly, the pressure difference between the inside and outside of the first check valve 502 gradually increases and subsequently opens. Under the influence of this pressure difference, the oil inside the piston cylinder 501 enters the second chamber 301 through the drain port 5011. When the piston plate 504 reaches its downward limit position, it then moves upward axially.

[0041] Repeat the above process to continuously transport the oil in chamber 103 through the bottom opening of piston cylinder 501, the inside of piston cylinder 501, and the drain port 5011 to chamber 2 301.

[0042] In a further embodiment, to achieve axial sliding of the piston plate 504, a helical rod 505 can be coaxially and rotatably inserted inside the piston cylinder 501. The helical rod 505 is vertically arranged and has two helical grooves on its side wall. The two helical grooves have opposite directions of rotation, are intersecting, and have their starting and ending points coinciding. The structure of the helical rod 505 can refer to existing reciprocating lead screws. The piston plate 504 is movably sleeved on the helical rod 505, and a slider is provided at the contact position with the helical rod 505. The slider is slidably inserted in the helical groove, allowing the piston plate 504 and the helical rod 505 to form a transmission engagement; the piston plate 504 and the piston cylinder 501 form a spline sliding engagement to limit the rotation of the piston plate 504. The low-loss, high-permeability composite magnetic core transformer is configured to also include a drive component for providing the rotational driving force of the helical rod 505.

[0043] During use, the drive unit drives the screw rod 505 to rotate. Under the combined action of the sliding fit between the slider and the screw groove, and the spline sliding fit between the piston plate 504 and the piston cylinder 501, the piston plate 504 slides back and forth along the screw rod 505.

[0044] To facilitate the installation of the helical rod 505, the top end of the helical rod 505 passes through the top of the piston cylinder 501 and the cover 102 sequentially. Two clamping plates 5051 are provided on the side wall of the helical rod 505. The two clamping plates 5051 are arranged at intervals in the vertical direction and are respectively clamped on the top of the cover 102 and the inner side of the top of the piston cylinder 501 to achieve axial positioning of the helical rod 505.

[0045] In a further embodiment, the drive unit is disposed on the top of the transformer body 1 and has a wind energy collection section and a power transmission section. The wind energy collection section is used to collect wind energy, and the power transmission section is used to transmit the wind energy collected by the wind energy collection section to the screw rod 505. Thus, wind power can be converted into the power for forced oil flow, which is not only environmentally friendly but also helps to achieve energy conservation.

[0046] Specifically, in this embodiment, the driving component can be set as a non-powered wind cap 6, which has a cap body and a central rod 601 fixedly connected. The wind energy collection part is the cap body of the non-powered wind cap 6, which is rotatably mounted on the top of the box cover 102. The principle of its wind energy collection is existing technology and will not be described in detail here. The power transmission part is the central rod 601, which is vertically arranged and coaxial with and fixedly connected to the spiral rod 505.

[0047] During use, when the cap of the non-powered wind cap 6 rotates due to wind force, it transmits power to the screw rod 505 through the central rod 601 to drive the screw rod 505 to rotate.

[0048] In a further embodiment, to enable the normal operation of the non-powered wind cap 6 under low wind conditions, an annular partition 403 is provided in the third chamber 401. The annular partition 403 divides the third chamber 401 into an inner annular cavity 4011 and an outer annular cavity 4012 along the inside and outside. The inner annular cavity 4011 is connected to the second chamber 301 through a connecting pipe 303, and the outer annular cavity 4012 is connected to the inner cavity of the heat dissipation fins 2 through a diversion pipe 402, a liquid inlet 201, and a diversion fin 2. The annular partition 403 has multiple notches 4031 evenly distributed along its circumference. The notches 4031 are located at the connection between the inner annular cavity 4011 and the second chamber 301. Specifically, when the shape of the diverter 4 is square, the shape of the annular partition 403 is also square, and the number of notches 4031 is set to four. The four notches 4031 are located at the four corners of the annular partition 403. At this time, the corners of the housing 101, the transfer component 3, and the diverter 4 are on the same straight line, ensuring that the connecting pipe 303 and the notches 4031 are on the same straight line, thereby ensuring that the notches 4031 are located at the connection between the inner annular cavity 4011 and the second chamber 301.

[0049] At each notch 4031, there are two elastically rotating baffles 405. Specifically, the two baffles 405 at the same notch 4031 are symmetrically arranged about the notch 4031. Each baffle 405 has a first baffle 4051 and a second baffle 4052 arranged at an obtuse angle. The first baffle 4051 of the two baffles 405 at the same notch 4031 can form a complete ring structure with the annular partition 403. A rotating column is provided at the junction of the first baffle 4051 and the second baffle 4052 of the same baffle. The rotating column and the end of the annular partition 403 are rotatably connected and connected to the end of the annular partition 403 through an elastic element, such as a torsion spring, so that the baffle 405 can be reset.

[0050] The baffle 405 has a first position and a second position before and after rotation. When the outside wind speed is less than the preset wind speed, the baffle 405 is in the first position. At this time, the two baffles 405 at the same notch 4031, the first baffle 4051 and the annular partition 403 form a complete annular structure. The two baffles 405 at the same notch 4031, the second baffle 4052 are arranged in parallel and spaced apart from the inner wall of the third chamber 401 to avoid affecting the flow of oil. The notch 4031 is closed, and the inner annular cavity 4011 and the outer annular cavity 4012 are isolated. The inner wall of the diverter 4 is circumferentially provided with There are multiple guide tubes 404, which connect the inner annular cavity 4011 and the first chamber 103 and are inclined. Since the shape of the diverter 4 is square, the guide tubes 404 can be divided into four groups according to their positions on different sides of the diverter 4. The inclination direction of each group of guide tubes 404 is the same. Multiple groups of guide tubes 404 are inclined along the same circumference, so that the oil flowing out of the guide tubes 404 has a tendency to rotate. The second chamber 301 is connected to the inner annular cavity 4011, the guide tubes 404 and the first chamber 103.

[0051] During the movement of the oil, the oil that enters from chamber 103 into chamber 201 then returns to chamber 103 through the guide pipe 404. With the help of the guiding characteristics of the guide pipe 404, the oil flowing out of the guide pipe 404 tends to drive the oil in chamber 103 to rotate. This allows for the utilization of wind power in low wind conditions, and the rotation of the oil in chamber 103 can reduce the local temperature of the transformer from being too high, thus helping to ensure the uniformity of the overall temperature of the transformer. An intermediate liquid port 203 is also provided on the side wall of the heat dissipation fin 2 facing the transformer body 1. The intermediate liquid port 203, the liquid inlet 201 and the liquid outlet 202 are arranged vertically, with the liquid inlet 201 located at the top and the intermediate liquid port 203 located between the liquid inlet 201 and the liquid outlet 202, and set close to the liquid inlet 201. When the inner ring cavity 4011 and the outer ring cavity 4012 are isolated, no oil enters the inner cavity of the heat dissipation fin 2 through the liquid inlet 201. At this time, the oil mainly exchanges freely between the inner cavity of the heat dissipation fin 2 and the chamber 103 through the intermediate liquid port 203 and the liquid outlet 202, thereby ensuring the normal heat dissipation of the oil by the heat dissipation fin 2 to a certain extent.

[0052] When the outside wind speed is greater than the preset wind speed, the baffle 405 rotates and eventually reaches the second position. The torsion spring stores energy, and the two baffles 405 at the same gap 4031, the second baffle 4052 and the inner wall of the third chamber 401 come into contact to isolate the connection between the second chamber 301 and the guide pipe 404. The gap 4031 opens. The second chamber 301 is connected to the inner cavity of the heat dissipation fin 2 through the outer ring cavity 4012, the liquid inlet 201 and the inner cavity of the heat dissipation fin 2, so that the oil can be forcibly exchanged between the inner cavity of the heat dissipation fin 2 and the first chamber 103, ensuring the heat dissipation effect on the transformer body 1.

[0053] In the embodiment where the driving component is a non-powered vent 6, to further improve the heat dissipation effect on the transformer, a ventilation section 7 is provided on the top of the transformer body 1. A ventilation chamber 8 is formed between the ventilation section 7 and the transformer body 1, and the ventilation chamber 8 connects the inner cavity of the non-powered vent 6 and the space above the heat dissipation fins 2. Thus, when there is wind, the wind drives the non-powered vent 6 to rotate, creating a negative pressure inside the non-powered vent 6. Under the action of the pressure difference, air near the heat dissipation fins 2 enters the inner cavity of the non-powered vent 6 through the ventilation chamber 8, achieving heat dissipation on the leeward side of the heat dissipation fins 2, thereby improving the overall heat dissipation uniformity of the heat dissipation fins 2, and further improving the heat dissipation effect on the transformer.

[0054] Specifically, in this embodiment, the ventilation section 7 includes a box-shaped base 701 and four box-shaped collection bodies 702. The base 701 is horizontally arranged with an open bottom and is sealed on the top of the cover 102. The ventilation chamber 8 is formed between the base 701 and the top of the cover 102. The collection bodies 702 correspond to and are located above the multiple heat dissipation fins 2 on the same side of the box 101. The bottom of the collection body 702 is open to facilitate the collection of air near the heat dissipation fins 2. The collection body 702 is connected to the ventilation chamber 8 through a duct 703, so that the air collected by the collection body 702 near the heat dissipation fins 2 can be transported into the ventilation chamber 8. At the same time, the duct 703 can be set as a rigid structure to facilitate the support of the collection body 702.

[0055] In one embodiment, to further improve the heat dissipation effect on the transformer, the number of suction components 5 is set to multiple. Thus, during transformer operation, with multiple suction components 5 working together, the heat dissipation effect on the transformer can be improved by increasing the circulation efficiency of the oil.

[0056] Taking a setting of three windings 105 as an example, the three windings 105 are arranged side by side; the number of suction components 5 is set to three, and they are arranged side by side, and each corresponds to one of the three windings 105, so as to facilitate targeted heat dissipation of the oil around the windings 105.

[0057] In a further embodiment, when there are multiple windings 105, the winding 105 located in the middle experiences the most severe heat generation, resulting in the highest temperature of the surrounding oil. To achieve targeted heat dissipation, the spiral rods 505 of multiple suction components 5 can be configured to rotate synchronously; the spiral grooves on all spiral rods 505 have equal lengths; when the number of spiral rods 505 is odd, the pitch of the spiral groove on the middle spiral rod 505 is greater than the pitch of the spiral grooves on the other spiral rods 505; when the number of suction components 5 is even, the pitches of the spiral grooves on the two middle spiral rods 505 are equal and greater than the pitches of the spiral grooves on the other spiral rods 505. Thus, during the operation of the transformer, since the pitch of the spiral groove on the central spiral rod 505 is the largest, the suction frequency of the central suction component 5 is the highest when the spiral rod 505 rotates for the same number of turns. This results in the highest circulation efficiency of the oil in the middle of chamber 103, which can adapt to the situation of excessively high temperature in the middle of chamber 103 and achieve targeted heat dissipation.

[0058] Taking a winding 105 with three windings as an example, during the operation of the transformer, the pitch of the spiral groove on the middle spiral rod 505 is the largest. Therefore, when the spiral rod 505 rotates for the same number of turns, the suction frequency of the middle suction component 5 is the highest, which makes the circulation efficiency of the oil in the middle of the chamber 103 the highest. This can adapt to the situation of excessively high temperature in the middle of the chamber 103 and achieve targeted heat dissipation.

[0059] In other embodiments, when there are multiple windings 105, the winding 105 located in the middle experiences the most severe heat generation, resulting in the highest oil temperature around it. To achieve targeted heat dissipation, the spiral rods 505 of multiple suction components 5 can be configured to rotate synchronously; the pitch of the spiral grooves on all spiral rods 505 is equal; when the number of spiral rods 505 is odd, the length of the spiral groove on the middle spiral rod 505 is greater than the length of the spiral grooves on the other spiral rods 505; when the number of suction components 5 is even, the lengths of the spiral grooves on the two middle spiral rods 505 are equal and greater than the lengths of the spiral grooves on the other spiral rods 505. Thus, during transformer operation, because the spiral groove on the middle spiral rod 505 is the longest, the suction amplitude of the middle suction component 5 is the largest when rotating the same number of times, thereby maximizing the circulation of oil in the middle of chamber 103, which can adapt to the excessively high temperature in the middle of chamber 103 and achieve targeted heat dissipation.

[0060] Taking the number of windings 105 as an example, during the operation of the transformer, since the length of the spiral groove on the middle spiral rod 505 is the largest, the suction amplitude of the middle suction component 5 is the largest when the spiral rod 505 rotates for the same number of turns. This results in the highest circulation volume of oil in the middle of chamber 103, which can adapt to the situation of excessively high temperature in the middle of chamber 103 and achieve targeted heat dissipation.

[0061] In the embodiment where the driving component is a non-powered wind cap 6, to achieve synchronous rotation among multiple spiral rods 505, a low-loss, high-permeability composite magnetic core transformer can be configured, which also includes a synchronization component 9. The synchronization component 9 includes a transmission wheel 901 and a synchronization belt 902. The top end of each spiral rod 505 is fixedly sleeved with a transmission wheel 901, which is located inside the ventilation chamber 8. The synchronization belt 902 is sleeved on all the transmission wheels 901, which facilitates the synchronous rotation of all the spiral rods 505.

[0062] During use, the non-powered wind cap 6 drives one of the spiral rods 505 to rotate, preferably the spiral rod 505 located in the middle. When the spiral rod 505 rotates, it synchronously drives the transmission wheel 901 on it to rotate. The transmission wheel 901 drives the other transmission wheels 901 to rotate through the synchronous belt 902. The other transmission wheels 901 synchronously drive the spiral rod 505 to rotate, so that all the spiral rods 505 rotate synchronously.

[0063] It is understandable that the transmission wheel 901 can be configured as a friction wheel structure, and the synchronous belt 902 can be configured as a friction belt structure, and the two can form a transmission connection through friction.

[0064] It is also understandable that the transmission wheel 901 can be configured as a gear structure, and the synchronous belt 902 can be configured as a gear belt structure, and the two can form a transmission connection through meshing.

[0065] In other embodiments, the synchronization component 9 may also be configured to include sprockets and chains, with a sprocket fixedly sleeved at the top of each screw rod 505, the sprockets being located inside the ventilation chamber 8; the chain drive is sleeved on all the sprockets, facilitating the synchronous rotation of all the screw rods 505.

[0066] In other embodiments, the suction assembly 5 can also be configured as a suction pump, with the suction end of the suction pump connected to chamber one 103 and the discharge end connected to chamber two 301, so that the oil in chamber one 103 can be drawn into chamber two 301.

[0067] In other embodiments, to enable the piston plate 504 to slide axially, the suction assembly 5 may be configured to include a drive cylinder, which is located on the top of the cover 102 and outputs an axial downward force and is fixed to the piston plate 504, thereby providing a driving force for the piston plate 504 to slide axially.

[0068] Understandably, the drive cylinder can be any of the following: a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

[0069] In other embodiments, to achieve the rotation of the screw rod 505, the driving component can be any one of a drive motor, a hydraulic motor, or a pneumatic motor. Taking a drive motor as an example, the drive motor is located on the top of the cover 102, with the motor shaft facing downwards and coaxially fixedly connected to the screw rod 505, so as to provide the driving force for the rotation of the screw rod 505.

[0070] In other embodiments, the power transmission unit can be configured as a central shaft, which is vertically arranged and coaxial with and fixedly connected to the screw rod 505; the wind energy collection unit can be configured as a fan blade, which is fixedly sleeved on the top of the central shaft and located above the box cover 102.

[0071] During use, when the fan blades rotate due to wind force, the power is transmitted to the screw rod 505 through the central shaft, thereby driving the screw rod 505 to rotate.

[0072] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A low-loss, high-permeability composite core transformer, characterized in that, include: The transformer body (1) has an internal chamber (103) for containing oil. A heat dissipation fin (2) is provided on the side wall of the transformer body (1) and is hollow inside. The side wall of the heat dissipation fin (2) facing the transformer body (1) has an inlet (201) and an outlet (202). The inner cavity of the heat dissipation fin (2) is connected to the first chamber (103) through the outlet (202). There are several heat dissipation fins (2), and several heat dissipation fins (2) are arranged around the transformer body (1). A transfer component (3) is provided in chamber one (103), and a chamber two (301) for containing oil is formed inside the transfer component (3); a flow divider (4) is provided in chamber one (103), and a chamber three (401) for containing oil is formed inside the flow divider (4). Chamber three (401) and chamber two (301) are connected, and are also connected to the inner cavity of the heat dissipation fins (2) through the liquid inlet (201); A suction assembly (5) is installed in the transfer component (3) and is used to draw oil from the first chamber (103) into the second chamber (301). As the suction assembly (5) works, the transfer component (3) evenly distributes the excess oil in chamber two (301) to chamber three (401), and the diverter (4) evenly distributes the excess oil in chamber three (401) to the inner cavity of all the heat dissipation fins (2).

2. The low-loss, high-permeability composite core transformer according to claim 1, characterized in that, The suction assembly (5) includes a piston cylinder (501) embedded in the second chamber (301); the bottom opening of the piston cylinder (501) is connected to the first chamber (103) in one direction through the bottom opening; a drain port (5011) is provided on the side wall of the piston cylinder (501), and the piston cylinder (501) is connected to the second chamber (301) in one direction through the drain port (5011); a piston plate (504) is inserted inside the piston cylinder (501), and the piston plate (504) and the piston cylinder (501) form a piston fit; when the piston plate (504) slides axially, the oil in the first chamber (103) enters the second chamber (301) in sequence through the bottom opening of the piston cylinder (501), the inside of the piston cylinder (501), and the drain port (5011).

3. The low-loss, high-permeability composite core transformer according to claim 2, characterized in that, A helical rod (505) is rotatably inserted inside the piston cylinder (501). Two helical grooves are opened on the side wall of the helical rod (505). The two helical grooves have opposite directions of rotation and are arranged crosswise, with their starting and ending points coinciding. A piston plate (504) is movably sleeved on the helical rod (505), and a slider is provided at the position where it contacts the helical rod (505). The slider is slidably inserted in the helical groove. The piston plate (504) also forms a sliding fit with the piston cylinder (501) to limit the rotation of the piston plate (504). The low-loss, high-permeability composite magnetic core transformer also includes a drive component for providing the rotational driving force of the helical rod (505).

4. The low-loss, high-permeability composite core transformer according to claim 3, characterized in that, The drive unit is located on the top of the transformer body (1) and has a wind energy collection section and a power transmission section. The wind energy collection section is used to collect wind energy, and the power transmission section is used to transmit the wind energy collected by the wind energy collection section to the screw rod (505).

5. The low-loss, high-permeability composite core transformer according to claim 4, characterized in that, The driving component is a non-powered wind cap (506).

6. The low-loss, high-permeability composite core transformer according to claim 5, characterized in that, The shunt component (4) has an annular structure, and the third chamber (401) is formed inside the side wall of the shunt component (4); the heat dissipation fins (2) are also provided with an intermediate liquid port (203) on the side wall facing the transformer body (1). The intermediate liquid port (203), the inlet (201) and the outlet (202) are arranged vertically, and the intermediate liquid port (203) is located between the inlet (201) and the outlet (202) and is set close to the inlet (201); the third chamber (401) is provided with an annular partition (4 03), the annular partition (403) divides the third chamber (401) into an inner annular cavity (4011) and an outer annular cavity (4012) along the inside and outside. The inner annular cavity (4011) is connected to the second chamber (301), and the outer annular cavity (4012) is connected to the inner cavity of the heat dissipation fins (2) through the liquid inlet (201); multiple guide pipes (404) are provided circumferentially on the inner side wall of the flow divider (4). The guide pipes (404) connect the inner annular cavity (4011) and the first chamber (103) and are inclined so that the liquid from the inner annular cavity (4011) and the outer annular cavity (103) can flow from the inner annular cavity (4011) and the outer annular cavity (103). The oil flowing out of the guide pipe (404) has a tendency to rotate; multiple notches (4031) are evenly distributed along the circumference of the annular baffle (403), and the notches (4031) are located at the connection between the inner annular cavity (4011) and the second chamber (301); each notch (4031) is elastically rotatably provided with two baffles (405), and the baffles (405) have corresponding first and second positions before and after rotation. When the outside wind speed is less than the preset wind speed, the baffle (405) is in the first position, and the notch (4031) is in the second position. 1) Closed, the inner ring cavity (4011) and the outer ring cavity (4012) are isolated. The second chamber (301) is connected to the first chamber (103) through the inner ring cavity (4011), the guide pipe (404). When the outside wind speed is greater than the preset wind speed, the baffle (405) is in the second position, the notch (4031) is opened, the second chamber (301) and the guide pipe (404) are isolated, and the second chamber (301) is connected to the inner cavity of the outer ring cavity (4012), the liquid inlet (201) and the heat dissipation fins (2).

7. The low-loss, high-permeability composite core transformer according to claim 5, characterized in that, The transformer body (1) is also provided with a ventilation section (6) at the top. A ventilation chamber is formed between the ventilation section (6) and the transformer body (1). The ventilation chamber is connected to the space above the non-powered wind cap (506) and the heat dissipation fins (2).

8. The low-loss, high-permeability composite core transformer according to claim 3, characterized in that, There are multiple suction components (5).

9. The low-loss, high-permeability composite core transformer according to claim 8, characterized in that, The spiral rods (505) of multiple suction components (5) rotate synchronously; the spiral grooves on all spiral rods (505) are of equal length; when the number of spiral rods (505) is odd, the pitch of the spiral groove on the middle spiral rod (505) is greater than the pitch of the spiral grooves on the other spiral rods (505); when the number of suction components (5) is even, the pitch of the spiral grooves on the two middle spiral rods (505) is equal and greater than the pitch of the spiral grooves on the other spiral rods (505).

10. The low-loss, high-permeability composite core transformer according to claim 8, characterized in that, The spiral rods (505) of multiple suction components (5) rotate synchronously; the pitch of the spiral grooves on all spiral rods (505) is equal; when the number of spiral rods (505) is odd, the length of the spiral groove on the middle spiral rod (505) is greater than the length of the spiral grooves on the other spiral rods (505); when the number of suction components (5) is even, the lengths of the spiral grooves on the two middle spiral rods (505) are equal and greater than the lengths of the spiral grooves on the other spiral rods (505).

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