A dual phase coupled inductor

Abstract

This invention discloses a two-phase coupled inductor, relating to the field of inductor technology. The invention includes a cylindrical housing with a support plate inside, on which the two-phase coupled inductor body is mounted. Several through holes are formed on the support plate surrounding the two-phase coupled inductor body. A fan is mounted on the bottom side of the housing, and several air inlets are formed on the bottom sidewall of the housing. A top cover is fitted onto the top of the housing, and several rings of heat dissipation holes are formed on the top cover. Each ring of heat dissipation holes includes a ring of ventilation holes on the top cover. A receiving groove is provided inside the top cover, corresponding to each ring of heat dissipation holes. This invention draws in cooling air through the fan and air inlets at the bottom of the housing. The airflow passes through the through holes on the support plate and is directly blown onto the two-phase coupled inductor body for forced cooling. The hot air rises to the top and is discharged through the rings of heat dissipation holes on the top cover. This bottom-in, top-out airflow path conforms to the principle of hot air rising, resulting in high heat dissipation efficiency.

Description

Technical Field

[0001] This invention belongs to the field of inductor technology, and in particular relates to a two-phase coupled inductor. Background Technology

[0002] Two-phase coupled inductors are key components in power electronic devices such as switching power supplies, and are widely used in the design of various electronic circuits. They are indispensable components for realizing multiple circuit functions. The working principle of inductors is based on the law of electromagnetic induction. Two or more inductor coils are coupled together through a magnetic core to achieve functions such as energy transfer, filtering, and current balancing. Their performance directly affects the efficiency and stability of the power supply. As electronic devices develop towards higher efficiency and higher power density, the performance requirements for two-phase coupled inductors are becoming increasingly stringent.

[0003] Inductors generate a lot of heat when they are working. Inductors are made of metal coils, and the heat generated can easily change the temperature of the metal coils, affecting the performance coefficient of the metal coils and reducing the lifespan of the inductor. If the heat cannot be dissipated in time, it will cause the inductor temperature to rise, which will lead to problems such as core saturation, coil insulation aging, and inductance drift. In severe cases, it may even burn out the device and affect the reliability of the entire circuit.

[0004] Traditional heat dissipation methods mostly employ convection cooling, achieving temperature reduction through heat exchange between the component surface and the air. This passive cooling method has significant drawbacks: First, air has an extremely low thermal conductivity, resulting in high thermal resistance, making it difficult to meet the requirements of high-power applications; second, traditional inductors often use epoxy resin potting, which, although providing insulation and fixation, has poor thermal conductivity and thus forms a thermal barrier. Summary of the Invention

[0005] The purpose of this invention is to provide a two-phase coupled inductor that solves the problems of low heat dissipation efficiency, easy dust accumulation, and lack of coordination between heat dissipation and dust prevention control in existing inductors by designing an active heat dissipation and dust prevention system with temperature control linkage.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a two-phase coupled inductor, comprising a cylindrical housing, a support plate disposed within the housing, and a two-phase coupled inductor body mounted on the support plate; several through holes are formed on the support plate located around the two-phase coupled inductor body; a fan is mounted on the bottom side of the housing, and several air inlets are provided on the bottom peripheral wall of the housing; a top cover is fitted onto the top of the housing, and several rings of heat dissipation holes are provided on the top cover; each heat dissipation hole group includes a ring of heat dissipation holes formed on the top cover; a top cover is located below any of the heat dissipation hole groups. The cover is equipped with a receiving groove, which has a ring structure. Cooling air is drawn in through the fan and air inlet at the bottom of the housing. The airflow passes through the through holes on the support plate and blows directly onto the two-phase coupled inductor body for forced cooling. The hot air rises to the top and is discharged through the ring-shaped heat dissipation holes on the top cover. This bottom-in, top-out airflow path conforms to the principle of hot air rising, resulting in high heat dissipation efficiency. The ring-shaped receiving groove can collect small amounts of condensate or large particles of foreign matter that may enter through the heat dissipation holes, preventing them from dripping directly onto the inductor and improving protection.

[0007] Furthermore, the top cover includes a cover body with heat dissipation holes, and a mounting flange A is provided at the end of the cover body; a mounting flange B is provided at the end of the housing; a through hole is provided on the mounting flange A, and a mounting bolt passes through the through hole; a threaded blind hole is provided on the mounting flange B to connect with the mounting bolt (threaded connection). Through the cooperation of the mounting flange, the mounting bolt and the threaded blind hole, a firm connection between the top cover and the housing is achieved, while facilitating disassembly and convenient maintenance, cleaning or replacement of the inductor.

[0008] Furthermore, it also includes a cross-shaped, star-shaped, or Y-shaped bracket, with a positioning sleeve at the center of the bracket, and an adjusting bolt threaded into the positioning sleeve on the cover body; the inner circumferential sidewall of the cover body is provided with a protrusion, and the protrusion is provided with a groove for the end of the bracket to be inserted. The bracket and the protrusion are designed to facilitate the support of the receiving groove located inside the cover body; and the bracket is provided with a protruding positioning post, and the bottom side of the receiving groove is provided with a positioning hole for the positioning post to pass through. The cooperation of the positioning post and the positioning hole ensures the accurate relative position between the bracket and the receiving groove, prevents the receiving groove from shaking or shifting on the bracket, and ensures the reliability of its water or dust collection function.

[0009] Furthermore, a convex support ring is provided on the outer peripheral sidewall of the housing below the air inlet. A stepped portion is provided on the convex support ring, and a tubular filter A is installed on the stepped portion. A vertically movable filter B is provided in the annular cavity formed between the filter A and the housing. The filter B is tubular. The mesh size of the filter A is larger than that of the filter B. The filter A acts as a primary filter, intercepting larger dust particles. The filter B, with its denser mesh, acts as a secondary filter, blocking fine dust particles.

[0010] Furthermore, sealing rings are provided on the top and bottom outer peripheral walls of the filter B; a connecting rod is connected to the bottom end of the filter B, penetrating the air inlet and extending into the housing; a protruding mounting block is provided on the inner wall surface of the housing above the air inlet, and the bottom side of the protruding mounting block and the upper surface of the connecting rod are connected by a telescopic module; the sealing rings ensure the sealing between the filter B and the filter A when the filter B moves up and down, preventing airflow short circuits and ensuring that all incoming air is filtered.

[0011] Furthermore, it also includes a power supply, which is connected to the telescopic module via a switch structure A; the switch structure A includes a heat-conducting plate installed on the bottom side of the support plate, a ceramic tube and a ceramic fixing sleeve are disposed on the heat-conducting plate, a ceramic sliding sleeve is fitted around the outer periphery of the ceramic tube and connected to the ceramic tube via a spring A; the ceramic fixing sleeve is fitted around the ceramic tube and the ceramic sliding sleeve; a contact A is disposed on the outer bottom side of the ceramic sliding sleeve, and a contact B is disposed on the inner bottom side of the ceramic fixing sleeve to cooperate with the contact A to achieve electrical connection.

[0012] Furthermore, a magnetic block A is provided on the outer bottom side of the ceramic sliding sleeve, and a magnetic block B that cooperates with the magnetic block A is provided on the inner bottom side of the ceramic fixing sleeve.

[0013] Furthermore, the power supply is connected to the fan via a switch structure B. The switch structure B includes an inner sleeve and an outer sleeve that cooperate with each other, and a spring B connects the inner sleeve and the outer sleeve. The outer peripheral side wall of the inner sleeve is provided with a protruding edge, and at least two mounting posts are installed on the protruding edge. A ceramic fixing sleeve is provided directly below the outer sleeve, and a contact C is provided on the inner bottom side of the ceramic fixing sleeve. A ceramic column is connected to the outer bottom side of the outer sleeve, and a contact D is provided at the end of the ceramic column to cooperate with the contact C to achieve electrical connection. A T-shaped rod that movably penetrates the inner sleeve is connected to the inner bottom side of the outer sleeve. The switch structure B is installed below the connecting rod.

[0014] Furthermore, at least one flared air guide plate is provided on the inner wall of the housing above the support plate; the air guide plate can guide and converge the airflow from the through holes of the support plate, making it more concentrated and evenly directed towards the key heat-generating parts of the two-phase coupled inductor body, reducing airflow eddies and energy loss, and further improving heat dissipation efficiency. The flared shape is beneficial for smoothly guiding the airflow.

[0015] The present invention has the following beneficial effects: This invention draws in cooling air through a fan and air inlet at the bottom of the housing. The airflow passes through the through holes on the support plate and blows directly onto the two-phase coupled inductor body for forced cooling. The hot air rises to the top and is discharged through the ring-shaped heat dissipation holes on the top cover. This bottom-in, top-out airflow path conforms to the principle of hot air rising, resulting in high heat dissipation efficiency. The annular receiving groove can collect any small amount of condensate or large particles that may enter through the heat dissipation holes, preventing them from dripping directly onto the inductor and improving its protective properties.

[0016] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the two-phase coupled inductor structure of the present invention. Figure 1 ; Figure 2 for Figure 1 Main view; Figure 3 The figure shows a cross-sectional view at point BB in section 2. Figure 4 for Figure 1 A sectional view; Figure 5 for Figure 4 Enlarged view of a portion of point A in the middle; Figure 6 for Figure 4 Enlarged view of a section at point B in the middle; Figure 7 This is a schematic diagram of the two-phase coupled inductor structure of the present invention. Figure 2 ; Figure 8 for Figure 7 A sectional view; Figure 9 for Figure 8 Enlarged view of a section at point C; Figure 10 This is the power supply circuit diagram for the present invention; Figure 11 This is a schematic diagram of switch structure B of the present invention; Figure 12 This is a schematic diagram of switch structure A of the present invention; The attached diagram lists the components represented by each number as follows: 1-Housing, 2-Fan, 3-Two-phase coupled inductor body, 4-Top cover, 5-Filter A, 6-Filter B, 7-Power supply, 10-Air inlet, 11-Support plate, 12-Through hole, 13-Air guide plate, 14-Mounting flange B, 20-Switch structure B, 40-Cover body, 41-Heat dissipation hole, 42-Mounting flange A, 421-Mounting bolt, 43-Protrusion, 44-Bracket, 45-Receiving groove, 47-Adjusting bolt, 50-Protruding support ring, 60-Switch structure A, 61-Sealing ring, 62-Connecting rod, 63-Protruding mounting block, 64-Telescopic module, 141-Threaded blind hole, 201-Inner sleeve, 202-Spring B, 203-Outer sleeve, 204-Protruding edge, 206-Ceramic column, 207-Ceramic fixing sleeve, 208-Mounting post, 209-T-shaped rod, 431-Groove, 441-Positioning post, 442-Positioning sleeve, 451-Positioning hole, 501-Step section, 601-Heat-conducting plate, 602-Ceramic tube body, 603-Ceramic sliding sleeve, 604-Spring A, 605-Ceramic fixing sleeve, 606-Magnet A, 607-Magnet B, 608-Contact A, 609-Contact B, 2061-Contact D, 2071-Contact C. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0021] Please see Figure 1-7As shown, this invention relates to a two-phase coupled inductor, comprising a cylindrical housing 1 with an open top, a top cover 4 fitted onto the top of the housing 1, a support plate 11 fixed to the inner wall of the housing 1, a two-phase coupled inductor body 3 mounted on the upper surface of the support plate 11, several through holes 12 formed on the support plate 11 located around the two-phase coupled inductor body 3, a fan 2 mounted on the bottom side of the housing 1, several air inlets 10 formed on the bottom sidewall of the housing 1, and several rings of heat dissipation holes formed on the top cover 4; the rings of heat dissipation holes include those formed on the top cover 4. A ring of heat dissipation holes 41 is provided. When the fan 2 is turned on, cold air is drawn in through the air inlet 10, passes through the through holes 12 of the support plate 11 to cool the inductor body 3, and the hot air is finally discharged through the heat dissipation holes 41 of the top cover 4, thus completing the heat dissipation of the inductor body 3. At the same time, at least one flared air guide plate 13 is provided on the inner wall of the housing 1 above the support plate 11. After the airflow passes through the through holes 12 of the support plate 11, it is guided by the air guide plate 13 and concentrated on the inductor coil part, reducing airflow eddies and energy loss, and further improving heat dissipation efficiency. The flared shape is conducive to smoothly guiding the airflow.

[0022] To prevent environmental dust from entering the housing 1 through the heat dissipation holes 41 and falling onto the inductor body 3, which would affect heat dissipation and potentially cause a short circuit, the present invention provides a receiving groove 45 inside the top cover 4 located below any of the heat dissipation hole groups. The receiving groove 45 has a ring structure, and the top cover 4 directly below any ring of heat dissipation hole groups is provided with a receiving groove 45. Environmental dust enters the housing 1 through the heat dissipation holes 41 and falls into the receiving groove 45 for collection.

[0023] To facilitate the detachable connection between the housing 1 and the top cover 4, the top cover 4 includes a cover body 40 with heat dissipation holes 41, and a mounting flange A42 is provided at the end of the cover body 40; a mounting flange B14 is provided at the end of the housing 1; a through hole is provided on the mounting flange A42, and a mounting bolt 421 is inserted through the through hole; a threaded blind hole 141 is provided on the mounting flange B14 to be threadedly connected to the mounting bolt 421. During maintenance, the top cover 4 can be separated from the housing 1 by unscrewing the mounting bolt 421 to expose the internal components.

[0024] In order to facilitate the removal of the receiving groove 45 during long-term use and clean the dust collected in the receiving groove 45, a bracket 44 in the shape of a "rice" character is also provided. The bracket 44 is provided with protruding positioning columns 441, and the bottom side of the receiving groove 45 is provided with positioning holes 451 for the positioning columns 441 to pass through. In order to facilitate the fitting connection between the bracket 44 and the top cover 4, a convex block 43 is provided on the inner peripheral side wall of the cover body 40, and a groove 431 for inserting the end of the bracket 44 is provided on the convex block 43. A positioning sleeve 442 is provided at the center of the bracket 44, and an adjusting bolt 47 screwed into the positioning sleeve 442 is provided on the cover body 40. Before installing the top cover 4, the receiving groove 45 is assembled onto the bracket 44, and the bracket 44 and the receiving groove 45 are integrally placed inside the cover body 40, and the end of the bracket 44 is controlled to abut against the inner wall surface of the cover body 40. First, the bracket 44 is controlled to extend inward along the axial direction of the cover body 40, the bracket 44 is rotated, and the bracket 44 is controlled to slide outward along the axial direction of the cover body 40 until the end of the bracket 44 slides into the groove 431. At this time, the adjusting bolt 47 is tightened so that its end is inserted into the positioning sleeve 442 and abuts against the center of the bracket 44, thereby fixing the bracket 44.

[0025] It can be known that when the fan 2 is started, the ambient air flow will enter the interior of the housing 1 through the air inlet 10. If this air enters the interior of the housing 1 directly without being filtered, after long-term use, dust will inevitably adhere to the inductor body 3. Therefore, it is necessary to filter the gas entering the interior of the housing 1 through the air inlet 10 to filter out the dust.

[0026] Based on this, a convex support ring 50 is provided on the outer peripheral side wall of the housing 1 below the air inlet 10. A stepped portion 501 is provided on the convex support ring 50, and a tubular filter screen A5 is installed on the stepped portion 501. The convex support ring 50 and the stepped portion 501 facilitate the installation and fixation of the filter screen A. A filter screen B6 that moves up and down is provided in the annular cavity formed between the filter screen A5 and the housing 1. The filter screen B6 is tubular. The mesh of the filter screen A5 is larger than the mesh of the filter screen B6. The filter screen A5 serves as a primary filter to intercept larger particles of dust. The filter screen B6 with denser mesh serves as a secondary filter to block fine dust.

[0027] Filter B6 can move up and down. The principle is that when the fan 2 is not started, filter A5 is used. At this time, the gas enters the housing 1 through filter A5 and air inlet 10, and is discharged from the heat dissipation hole 41 along with the airflow. Natural convection is achieved at this time. Natural convection is slow and less air enters. If filter A5 and filter B6 are used at the same time, the convection efficiency is low. Conversely, when the fan 2 is started, the ambient air enters the housing 1 through filter A5 and filter B6 at a faster speed. At this time, if filter A5 is used alone, dust with variable shape such as cotton wool can easily pass through the mesh of filter A5 and enter the housing under the action of airflow. At this time, filter A5 and filter B6 are used together to intercept it. That is, when the inductor temperature is low and the fan 2 is not started, the telescopic module 64 is in the retracted state, the filter B6 is lifted, and only the filter A5 works. That is, when the filter B is lifted, the airflow is mainly filtered by the filter A, and the filter B is in an idle state to ensure smooth air intake under natural convection. When the temperature rises and the fan needs to be started, the filter B6 is lowered for fine filtration.

[0028] Specifically, the top and bottom outer peripheral walls of filter B6 are equipped with sealing rings 61. The sealing rings 61 ensure the sealing between filter B6 and filter A5 when filter B6 moves up and down, preventing airflow short circuits and ensuring that all incoming air is filtered. At the same time, the bottom end of filter B6 is connected to a connecting rod 62 that passes through the air inlet 10 and extends into the housing 1. A protruding mounting block 63 is provided on the inner wall surface of housing 1 above the air inlet 10. The bottom side of the protruding mounting block 63 is connected to the upper surface of the connecting rod 62 through a telescopic module 64. The connecting rod 62 transmits the movement of filter B to the inside of the housing. The telescopic movement of the telescopic module 64 causes filter B6 to move up and down. When the telescopic module 64 extends, filter B6 is inserted into the annular cavity formed by filter A5 and housing 1. When the telescopic module 64 retracts, filter B6 slides upward from the annular cavity formed by filter A5 and housing 1. The sealing ring 61 can be replaced with sealing bristles or the like to reduce the amount of gas entering the housing 1 from the gap formed between the top of the filter screen A5 and the bottom of the filter screen B6 when the fan 2 is running.

[0029] Meanwhile, when the telescopic module 64 extends and retracts, causing the filter screen B6 to move up and down, the design of the sealing ring 61 contacting the inner wall of the filter screen A5 can clean off some of the dust adhering to the filter screen A5, thus preventing the filter screen A5 from becoming clogged.

[0030] In this invention, the key point is that the activation mechanism of filter B6 and fan 2 is determined based on the actual internal temperature of housing 1; that is, when the internal temperature of housing 1 reaches the preset value, filter B6 is inserted into the annular cavity formed by filter A5 and housing 1, and then fan 2 is started, so as to avoid the fan 2 starting first and causing variable-shaped dust such as cotton wool in the environment to pass through the mesh of filter A5 and enter the interior of housing.

[0031] Based on the above requirements, the present invention provides a power supply 7 for supplying power to the fan 2 and the telescopic module 64. The power supply 7 is connected to the telescopic module 64 through a switch structure A60. The switch structure A60 is installed on the bottom side of the support plate 11. The power supply 7 is connected to the fan 2 through a switch structure B20, which is installed below the connecting rod 62. That is, when the temperature inside the housing 1 reaches a preset value, the switch structure A60 is turned on first. After the switch structure A60 is turned on, the power supply 7 supplies power to the telescopic module 64. The telescopic module 64 extends and drives the filter screen B6 to move downward. After the filter screen B6 moves downward to the lowest point, the filter screen B6 abuts against the switch structure B20, controlling the switch structure B20 to turn on. The power supply 7 supplies power to the fan 2, and the fan 2 starts.

[0032] Specifically, the switch structure A60 includes a heat-conducting plate 601 mounted on the bottom side of the support plate 11. A ceramic tube 602 and a ceramic fixing sleeve 605 are disposed on the heat-conducting plate 601. A ceramic sliding sleeve 603 is sleeved on the outer periphery of the ceramic tube 602 and connected to the ceramic tube 602 by a spring A604. The ceramic fixing sleeve 605 is sleeved on the outside of the ceramic tube 602 and the ceramic sliding sleeve 603. A contact A608 is disposed on the outer bottom side of the ceramic sliding sleeve 603, and a contact B609 is disposed on the inner bottom side of the ceramic fixing sleeve 605 to cooperate with the contact A608 to achieve electrical connection. Contacts A608 and B609 are respectively connected by wires. Connect the power supply 7 and the telescopic module 64; the switch utilizes the principle of thermal expansion and contraction or bimetallic strip. When the inductor temperature is too high, the heat-conducting plate 601 transfers heat to the sealed space formed by the ceramic tube 602 and the ceramic sliding sleeve 603. The internal gas expands due to heat, pushing the ceramic sliding sleeve 603 to slide axially towards the inner bottom side of the ceramic fixed sleeve 605, so that the contact A608 installed on it contacts the contact B609 fixed to the inner bottom side of the ceramic fixed sleeve 605, thereby connecting the circuit from the power supply 7 to the telescopic module 64 and automatically controlling the extension of the telescopic module 64; the telescopic module 64 is an electromagnetic telescopic rod, specifically a solenoid or voice coil motor can be selected.

[0033] A magnetic block A606 is also provided on the outer bottom side of the ceramic sliding sleeve 603, and a magnetic block B607 that cooperates with the magnetic block A606 is provided on the inner bottom side of the ceramic fixed sleeve 605. The mutual attraction or repulsion between the magnetic blocks A606 and B607 can cooperate with the spring A604 to accurately set the trigger temperature point of the switch, and make the switch act more quickly and crisply when triggered, avoiding the generation of electric arc at the contact point, and improving the reliability and life of the switch. At the same time, the magnetic force can provide a certain hysteresis to prevent frequent switching near the critical temperature. By selecting magnetic blocks A606 and B607 with different magnetic forces, the operating temperature of the switch can be calibrated. When the temperature reaches the set value, the magnetic force and thermal stress work together to overcome the elastic force of the spring 604, so that the contacts close quickly.

[0034] Specifically, the switch structure B20 includes an inner sleeve 201 and an outer sleeve 203 that cooperate with each other. In this embodiment, the inner sleeve 201 and the outer sleeve 203 can slide relative to each other axially, and a spring B202 connects the inner sleeve 201 and the outer sleeve 203. A protruding edge 204 is provided on the outer peripheral side wall of the inner sleeve 201, and at least two mounting posts 208 are installed on the protruding edge 204. A ceramic fixing sleeve 207 is provided directly below the outer sleeve 203, and a contact point C2071 is provided on the inner bottom side of the ceramic fixing sleeve 207. A ceramic post 206 is connected to the outer bottom side of the outer sleeve 203, and the end of the ceramic post 206 is provided with a contact point. C2071 cooperates with contact D2061 to achieve electrical connection; contact C2071 and contact D2061 are respectively connected to power supply 7 and fan through wires; a T-shaped rod 209 that moves through inner sleeve 201 is connected to the inner bottom side of outer sleeve 203; when filter screen B6 moves downward, it drives connecting rod 62 to press down T-shaped rod 209, so that contact C2071 and contact D2061 in switch structure B20 make contact, thereby connecting to power supply 7 of fan 2, and fan 2 starts to generate airflow; when filter screen B6 moves upward and resets, spring B202 provides reset force, and switch structure B20 returns to the open state.

[0035] Preferably, the convex mounting block 63 or the inner wall of the housing 1 is provided with a limiting element. When the filter screen B6 descends to the predetermined position, the connecting rod 62 triggers the switch structure B20, and at the same time the limiting element prevents it from continuing to descend, so as to avoid damaging the switch structure B20.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A two-phase coupled inductor, characterized in that: The device includes a cylindrical housing (1), a support plate (11) is provided inside the housing (1), and a two-phase coupled inductor body (3) is mounted on the support plate (11); a plurality of through holes (12) are provided on the support plate (11) located around the two-phase coupled inductor body (3). A fan (2) is installed on the bottom side of the housing (1), and several air inlets (10) are provided on the bottom peripheral wall of the housing (1). The top of the housing (1) is fitted with a top cover (4), and the top cover (4) is provided with several rings of heat dissipation holes; the heat dissipation hole group includes a ring of heat dissipation holes (41) opened on the top cover (4). A receiving groove (45) is installed in the top cover (4) located below any of the heat dissipation hole groups. The receiving groove (45) has a ring structure.

2. A two-phase coupled inductor according to claim 1, characterized in that, The top cover (4) includes a cover body (40) with heat dissipation holes (41), and the end of the cover body (40) is provided with a mounting flange A (42); the end of the housing (1) is provided with a mounting flange B (14). The mounting flange A (42) has a through hole, and a mounting bolt (421) is inserted through the through hole. The mounting flange B (14) has a threaded blind hole (141) that is threadedly connected to the mounting bolt (421).

3. A two-phase coupled inductor according to claim 2, characterized in that, It also includes a cross-shaped, star-shaped, or Y-shaped bracket (44), with a positioning sleeve (442) provided at the center of the bracket (44), and an adjusting bolt (47) threaded into the positioning sleeve (442) on the cover body (40). The inner peripheral sidewall of the cover body (40) is provided with a protrusion (43), and the protrusion (43) is provided with a groove (431) for inserting the end of the bracket (44).

4. A two-phase coupled inductor according to claim 3, characterized in that, The bracket (44) is provided with a protruding positioning post (441), and the bottom side of the receiving groove (45) is provided with a positioning hole (451) for the positioning post (441) to pass through.

5. A two-phase coupled inductor according to any one of claims 1-4, characterized in that, A convex support ring (50) is provided on the outer peripheral side wall of the housing (1) located below the air inlet (10). A step portion (501) is provided on the convex support ring (50), and a tubular filter screen A (5) is installed on the step portion (501). A vertically movable filter B (6) is provided in the annular cavity formed between the filter A (5) and the housing (1), and the filter B (6) is tubular; The mesh size of filter A (5) is larger than that of filter B (6).

6. A two-phase coupled inductor according to claim 5, characterized in that, The filter screen B (6) is provided with sealing rings (61) on the top and bottom outer peripheral sidewalls. The bottom end of the filter screen B (6) is connected to a connecting rod (62) that penetrates the air inlet (10) and extends into the housing (1). A protruding mounting block (63) is provided on the inner wall of the housing (1) above the air inlet (10). The bottom side of the protruding mounting block (63) and the upper surface of the connecting rod (62) are connected by a telescopic module (64).

7. A two-phase coupled inductor according to claim 6, characterized in that, It also includes a power supply (7), which is connected to the telescopic module (64) via a switch structure A (60). The switch structure A (60) includes a heat-conducting plate (601) installed on the bottom side of the support plate (11). A ceramic tube (602) and a ceramic fixing sleeve (605) are provided on the heat-conducting plate (601). The ceramic sliding sleeve (603) is sleeved on the outer periphery of the ceramic tube (602) and connected to the ceramic tube (602) by a spring A (604). The ceramic fixing sleeve (605) is sleeved on the outside of the ceramic tube body (602) and the ceramic sliding sleeve (603); The ceramic sliding sleeve (603) has a contact A (608) on its outer bottom side, and the ceramic fixing sleeve (605) has a contact B (609) on its inner bottom side that cooperates with the contact A (608) to achieve electrical connection.

8. A two-phase coupled inductor according to claim 7, characterized in that, The outer bottom side of the ceramic sliding sleeve (603) is also provided with a magnetic block A (606), and the inner bottom side of the ceramic fixing sleeve (605) is provided with a magnetic block B (607) that cooperates with the magnetic block A (606).

9. A two-phase coupled inductor according to claim 7, characterized in that, The power supply (7) is connected to the fan (2) through the switch structure B (20). The switch structure B (20) includes an inner sleeve (201) and an outer sleeve (203) that cooperate with each other. A spring B (202) is connected between the inner sleeve (201) and the outer sleeve (203). The outer peripheral sidewall of the inner sleeve (201) is provided with a protruding edge (204), and at least two mounting posts (208) are installed on the protruding edge (204). A ceramic retaining sleeve (207) is provided directly below the outer sleeve (203), and a contact point C (2071) is provided on the inner bottom side of the ceramic retaining sleeve (207); a ceramic post (206) is connected to the outer bottom side of the outer sleeve (203), and a contact point D (2061) is provided at the end of the ceramic post (206) to cooperate with the contact point C (2071) to realize electrical connection. The inner bottom side of the outer sleeve (203) is connected to a T-shaped rod (209) that movably passes through the inner sleeve (201); the switch structure B (20) is installed below the connecting rod (62).

10. A two-phase coupled inductor according to claim 1, characterized in that, At least one flared air guide plate (13) is provided on the inner wall of the housing (1) located above the support plate (11).

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