A protective structure for a medium- and high-frequency induction furnace coil

Abstract

This utility model relates to the field of induction furnace technology and discloses a protective structure for a medium- and high-frequency induction furnace coil. The structure includes an induction furnace coil body, with multiple magnetic yokes fixedly installed on the outer wall of the coil body. These yokes are evenly distributed around the outer wall of the coil body, and water distribution pipes are provided above each yoke. This utility model discharges cooling medium into the multiple water distribution pipes. Through the design of a hollow cone for diversion, the cooling medium inside the water distribution pipes can be diverted, allowing it to be discharged into the cooling pipes and the grooved cooling covers on both sides of the magnetic yokes. The cooling medium inside the grooved cooling covers cools the yokes from both sides towards the center, while the cooling medium inside the cooling pipes cools the yokes from the center outwards. This improves the cooling efficiency of the magnetic yokes and prevents deformation of the magnetic yoke material due to high temperatures, which could affect the coil's support strength and magnetic field distribution.

Description

Technical Field

[0001] This utility model relates to the field of induction furnace technology, and more specifically to a protective structure for a medium- and high-frequency induction furnace coil. Background Technology

[0002] The coil of a medium- and high-frequency induction furnace is a core component of electromagnetic induction heating equipment. It is mainly used to convert electrical energy into heat energy and generate eddy currents inside the metal through electromagnetic induction to achieve heating. In medium- and high-frequency induction furnaces, a magnetic yoke is usually installed on the outer wall of the coil. The main functions of the magnetic yoke include forming a magnetic circuit, fixing the magnetic poles, providing mechanical support, and shielding the magnetic field. On the one hand, the magnetic yoke can shield the coil from magnetic leakage, reduce furnace heating and improve energy efficiency; on the other hand, it can support the induction coil and enhance the structural strength of the furnace, thus protecting the coil.

[0003] For example, application number "CN202223582924.6" discloses a magnetic shielding structure for the induction coil of a medium-frequency induction heating device. The structure includes an induction coil, with an upper cylinder and a lower cylinder positioned above and below the coil, respectively. A connecting frame is detachably mounted on the upper and lower cylinders via bolts. An upper short-circuit ring is fixedly mounted on the inner surface of the upper cylinder, and a lower short-circuit ring is fixedly mounted on the inner surface of the lower cylinder. One end of each short-circuit ring is connected to a water inlet pipe, and the other end is connected to a water outlet pipe. A magnetic yoke is fixedly mounted on the inner side of the connecting frame. In this solution, by increasing the magnetic leakage coverage area of ​​the upper and lower short-circuit rings, magnetic leakage is better reduced. Furthermore, by setting the upper and lower short-circuit rings as non-closed metal rings, the short-circuit rings themselves cannot generate a magnetic field, thus increasing the magnetic shielding effect. Using this structure, magnetic leakage above and below the induction coil can be significantly reduced, preventing the circuit panel above the induction coil from melting.

[0004] After improving the magnetic shielding structure of the induction coil in this medium-frequency induction heating device, the leakage magnetic phenomenon can be reduced by using two short-circuit rings and a magnetic yoke. The two short-circuit rings can also be cooled down, but the magnetic yoke cannot be cooled down. High temperature can easily cause deformation of the magnetic yoke material, affecting the support strength of the coil and the magnetic field distribution, which needs to be improved. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a protective structure for the coil of a medium- and high-frequency induction furnace to solve the problems existing in the background art.

[0006] This utility model provides the following technical solution: a protective structure for a medium-high frequency induction furnace coil, comprising an induction furnace coil body, wherein multiple magnetic yokes are fixedly installed on the outer wall of the induction furnace coil body, the multiple magnetic yokes are evenly distributed around the outer wall of the induction furnace coil body, a water distribution pipe is provided above each of the multiple magnetic yokes, a flow-diverting hollow cone is fixedly installed in the middle of the inside of the water distribution pipe, a connecting pipe is fixedly installed in the middle of the top of the water distribution pipe, a cooling pipe is fixedly installed in the middle of the bottom of the water distribution pipe, the outer wall of the cooling pipe is fixedly installed inside the magnetic yoke, a grooved cooling cover is symmetrically fixedly installed on both sides of the magnetic yoke, the two ends of the bottom of the water distribution pipe are fixedly installed on the top of the grooved cooling cover, the cooling pipe and the grooved cooling cover are both connected to the inside of the water distribution pipe, an upper annular guide pipe is provided above the induction furnace coil body, the top end of the connecting pipe is fixedly installed at the bottom of the upper annular guide pipe, and the top end of the connecting pipe is connected to the inside of the upper annular guide pipe.

[0007] Furthermore, an inlet pipe is fixedly installed on one side of the upper annular guide pipe, an inlet is opened in the middle of the top of the water distribution pipe, the bottom end of the connecting pipe is located above the inlet, the top end of the split hollow cone is located below the inlet, the split hollow cone is narrow at the top and wide at the bottom, and the top end of the cooling pipe is located directly below the split hollow cone.

[0008] Furthermore, the bottom end of the cooling pipe extends to the bottom of the magnetic yoke and is fixedly connected to a first water collection pipe. A second water collection pipe is fixedly installed at the bottom of the trough-shaped cooling cover. The bottom end of the second water collection pipe is fixedly installed on one side of the first water collection pipe, and the bottom end of the second water collection pipe communicates with the interior of the first water collection pipe.

[0009] Furthermore, a lower annular guide pipe is fixedly provided below the induction furnace coil body, the bottom end of the No. 1 water collection pipe is fixedly installed on the top of the lower annular guide pipe, the bottom end of the No. 1 water collection pipe is connected to the interior of the lower annular guide pipe, and a drain pipe is fixedly installed on one side of the lower annular guide pipe.

[0010] Furthermore, an upper short-circuit ring is provided between the induction furnace coil body and the upper annular guide pipe, and a lower short-circuit ring is provided between the induction furnace coil body and the lower annular guide pipe. The upper and lower short-circuit rings are provided with water inlet and water outlet ends, and the outer walls of the upper and lower short-circuit rings are fixedly installed on the inner wall between multiple magnetic yokes.

[0011] Furthermore, a support frame is fixedly installed on the outer wall of each of the multiple magnetic yokes. The number of support frames is the same as the number of magnetic yokes. An installation frame is fixedly installed on the outer wall of each support frame. The outer wall of the installation frame has multiple installation openings. The outer walls of the upper annular guide pipe and the lower annular guide pipe are fixedly installed on the inner wall between the multiple support frames.

[0012] The technical effects and advantages of this utility model are as follows: 1. This utility model, through the combination of an upper annular guide pipe, a water inlet pipe, and a connecting pipe, facilitates the discharge of cooling medium into multiple water distribution pipes. The hollow cone design of the distribution pipes allows for the diversion of the cooling medium within the water distribution pipes, resulting in the cooling medium being discharged into the cooling pipes and the grooved cooling covers on both sides of the magnetic yoke. The cooling medium inside the grooved cooling covers cools the magnetic yoke from both sides towards the center, while the cooling medium inside the cooling pipes cools the magnetic yoke from the center outwards. This improves the cooling efficiency of the magnetic yoke and prevents deformation of the magnetic yoke material due to high temperatures, which could affect the coil's support strength and magnetic field distribution.

[0013] 2. In this utility model, multiple magnetic yokes can be cooled and cooled simultaneously, and the cooling medium after cooling the magnetic yokes can flow into the lower annular guide pipe and be discharged through the drain pipe. The installation port on the outer wall of the mounting bracket makes it easy to use bolts to fix this protective structure inside the induction furnace. Attached Figure Description

[0014] Fig. 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Fig. 2 This is an exploded view of the overall structure of this utility model.

[0016] Fig. 3 This is a schematic diagram of the magnetic yoke, connecting pipe, water distribution pipe, cooling pipe, and trough-shaped cooling cover of this utility model.

[0017] Fig. 4 This is a cross-sectional schematic diagram of the magnetic yoke, connecting pipe, water distribution pipe, cooling pipe and trough-shaped cooling cover of this utility model.

[0018] Fig. 5 This is an enlarged schematic diagram of the structure at point A of this utility model.

[0019] Fig. 6 This is a schematic diagram of the support frame, mounting frame, and mounting port structure of this utility model.

[0020] The attached diagram is labeled as follows: 1. Induction furnace coil body; 2. Magnetic yoke; 3. Support frame; 4. Mounting frame; 41. Mounting port; 5. Upper annular guide pipe; 51. Water inlet pipe; 6. Connecting pipe; 7. Water distribution pipe; 71. Flow distribution hollow cone; 72. Water inlet; 8. Cooling pipe; 9. Trough-shaped cooling cover; 10. No. 1 water collection pipe; 11. No. 2 water collection pipe; 12. Lower annular guide pipe; 13. Drain pipe; 14. Upper short-circuit ring; 15. Lower short-circuit ring. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The protective structure of the medium- and high-frequency induction furnace coil involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Example 1: like Figs. 1-6 As shown, a protective structure for a medium- and high-frequency induction furnace coil includes an induction furnace coil body 1. Multiple magnetic yokes 2 are fixedly installed on the outer wall of the induction furnace coil body 1. The multiple magnetic yokes 2 are evenly distributed around the outer wall of the induction furnace coil body 1. A water distribution pipe 7 is provided above each of the multiple magnetic yokes 2. A connecting pipe 6 is fixedly installed in the middle of the top of the water distribution pipe 7. An upper annular guide pipe 5 is provided above the induction furnace coil body 1. A water inlet pipe 51 is fixedly installed on one side of the upper annular guide pipe 5. The top end of the connecting pipe 6 is fixedly installed at the bottom of the upper annular guide pipe 5. The top end of the connecting pipe 6 communicates with the interior of the upper annular guide pipe 5. The arrangement of the water inlet pipe 51 and the upper annular guide pipe 5 facilitates the discharge of cooling medium into the interior of the multiple connecting pipes 6. The arrangement of the multiple connecting pipes 6 can perform preliminary diversion of the cooling medium, which is convenient for subsequent cooling of the multiple magnetic yokes 2. A water inlet 72 is provided at the middle of the top of the water distribution pipe 7. The bottom end of the connecting pipe 6 is located above the water inlet 72. A flow-dividing hollow cone 71 is fixedly installed in the middle of the interior of the water distribution pipe 7. The top of the flow-dividing hollow cone 71 is located below the water inlet 72. The flow-dividing hollow cone 71 is narrow at the top and wide at the bottom. A cooling pipe 8 is fixedly installed in the middle of the bottom of the water distribution pipe 7. The top of the cooling pipe 8 is located directly below the flow-dividing hollow cone 71. The outer wall of the cooling pipe 8 is fixedly installed inside the magnetic yoke 2. Grooved cooling covers 9 are symmetrically fixedly installed on both sides of the magnetic yoke 2. The two ends of the bottom of the water distribution pipe 7 Fixedly installed on the top of the trough-shaped cooling cover 9, both the cooling pipe 8 and the trough-shaped cooling cover 9 are connected to the interior of the water distribution pipe 7. When the cooling medium inside the connecting pipe 6 enters the interior of the water distribution pipe 7 through the inlet 72, the cooling medium at the inlet 72 of the water distribution pipe 7 can be divided into three streams by the setting of the splitting hollow cone 71. One stream of cooling medium flows into the interior of the cooling pipe 8 through the interior of the splitting hollow cone 71, and the other two streams of cooling medium flow into the trough-shaped cooling cover 9 on both sides of the magnetic yoke 2 from both ends of the water distribution pipe 7, so that the interior and both sides of the magnetic yoke 2 can be cooled simultaneously. The bottom end of the cooling pipe 8 extends to the bottom of the magnetic yoke 2 and is fixedly connected to the first water collection pipe 10. The bottom of the trough-shaped cooling cover 9 is fixedly installed with the second water collection pipe 11. The bottom end of the second water collection pipe 11 is fixedly installed on one side of the first water collection pipe 10. The bottom end of the second water collection pipe 11 communicates with the interior of the first water collection pipe 10. The lower annular guide pipe 12 is fixedly installed below the induction furnace coil body 1. The bottom end of the first water collection pipe 10 is fixedly installed on the top of the lower annular guide pipe 12. The bottom end of the first water collection pipe 10 communicates with the interior of the lower annular guide pipe 12. A drain pipe 13 is fixedly installed on one side of the lower annular guide pipe 12. The cooling medium after cooling down multiple magnetic yokes 2 can flow through the first water collection pipe 10 and the second water collection pipe 11 into the lower annular guide pipe 12 and be discharged uniformly through the drain pipe 13.

[0023] Example 2: like Figs. 1-6 As shown, an upper short-circuit ring 14 is provided between the induction furnace coil body 1 and the upper annular guide pipe 5, and a lower short-circuit ring 15 is provided between the induction furnace coil body 1 and the lower annular guide pipe 12. The upper short-circuit ring 14 and the lower short-circuit ring 15 are provided with water inlet and water outlet at both ends. The outer walls of the upper short-circuit ring 14 and the lower short-circuit ring 15 are fixedly installed on the inner wall between multiple magnetic yokes 2. In this application, the upper short-circuit ring 14 and the lower short-circuit ring 15 have the same function as the short-circuit ring in the magnetic isolation structure of the induction coil of a medium frequency induction heating device disclosed in the prior art application number "CN202223582924.6". They can reduce the magnetic leakage phenomenon on the upper and lower sides of the induction furnace coil body 1. Their function will not be described in detail. Support frames 3 are fixedly installed on the outer walls of multiple magnetic yokes 2. The number of support frames 3 is the same as the number of magnetic yokes 2. Mounting frames 4 are fixedly installed on the outer walls of the support frames 3. Multiple mounting ports 41 are opened on the outer walls of the mounting frames 4. The outer walls of the upper annular guide pipe 5 and the lower annular guide pipe 12 are fixedly installed on the inner walls between the multiple support frames 3. The multiple mounting ports 41 on the outer walls of the mounting frames 4 make it convenient to use bolts to fix the protective structure of this application inside the induction furnace.

[0024] In summary, as Figs. 1-6As shown, this protective structure for a medium-high frequency induction furnace coil, when in use, protects the induction furnace coil body 1 by setting up the magnetic yoke 2, upper short-circuit ring 14, and lower short-circuit ring 15, reducing magnetic leakage of the induction furnace coil body 1. External cooling medium, under the action of a power source such as a pump, can be discharged into the upper short-circuit ring 14, lower short-circuit ring 15, and upper annular guide pipe 5 respectively, thereby cooling the upper short-circuit ring 14 and lower short-circuit ring 15. The cooling medium inside the upper annular guide pipe 5 can be discharged into multiple water distribution pipes 7 through multiple connecting pipes 6. Utilizing the setting of the splitting hollow cone 71, the cooling medium at the inlet 72 of the water distribution pipe 7 can be divided into three streams. One stream of cooling medium flows into the cooling pipe 8 through the splitting hollow cone 71. The other two streams of cooling medium flow from both ends of the water distribution pipe 7 into the grooved cooling shrouds 9 on both sides of the magnetic yoke 2. The cooling medium inside the grooved cooling shrouds 9 cools the magnetic yoke 2 from both sides towards the center, and the cooling medium inside the cooling pipe 8 cools the magnetic yoke 2 from the center outward, thereby improving the cooling efficiency of the magnetic yoke 2. The cooling medium inside the cooling pipe 8 can be discharged into the first water collection pipe 10, and the cooling medium inside the grooved cooling shrouds 9 is discharged into the first water collection pipe 10 through the second water collection pipe 11 and enters the lower annular guide pipe 12. In this way, multiple magnetic yokes 2 can be cooled simultaneously, and the cooling medium after cooling the magnetic yoke 2 can be collected into the lower annular guide pipe 12 and finally discharged through the drain pipe 13.

[0025] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the installation methods between equipment are also the same as conventional installation methods in the prior art.

[0026] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. In conclusion, the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A protective structure for a medium-to-high frequency induction furnace coil, comprising an induction furnace coil body (1), characterized in that, Multiple magnetic yokes (2) are fixedly installed on the outer wall of the induction furnace coil body (1). The multiple magnetic yokes (2) are evenly distributed around the outer wall of the induction furnace coil body (1). A water distribution pipe (7) is provided above each of the multiple magnetic yokes (2). A flow-dividing hollow cone (71) is fixedly installed in the middle of the inside of the water distribution pipe (7). A connecting pipe (6) is fixedly installed in the middle of the top of the water distribution pipe (7). A cooling pipe (8) is fixedly installed in the middle of the bottom of the water distribution pipe (7). The outer wall of the cooling pipe (8) is fixedly installed on the magnetic yoke. Inside (2), a trough-shaped cooling cover (9) is symmetrically fixed on both sides of the magnetic yoke (2). The two ends of the bottom of the water distribution pipe (7) are fixedly installed on the top of the trough-shaped cooling cover (9). The cooling pipe (8) and the trough-shaped cooling cover (9) are both connected to the inside of the water distribution pipe (7). An upper annular guide pipe (5) is provided above the induction furnace coil body (1). The top end of the connecting pipe (6) is fixedly installed at the bottom of the upper annular guide pipe (5). The top end of the connecting pipe (6) is connected to the inside of the upper annular guide pipe (5).

2. The protective structure for a medium-high frequency induction furnace coil according to claim 1, characterized in that: A water inlet pipe (51) is fixedly installed on one side of the upper annular guide pipe (5). A water inlet (72) is opened in the middle of the top of the water distribution pipe (7). The bottom end of the connecting pipe (6) is located above the water inlet (72). The top end of the split hollow cone (71) is located below the water inlet (72). The split hollow cone (71) is narrow at the top and wide at the bottom. The top end of the cooling pipe (8) is located directly below the split hollow cone (71).

3. The protective structure for a medium-high frequency induction furnace coil according to claim 1, characterized in that: The bottom end of the cooling pipe (8) extends to the bottom of the magnetic yoke (2) and is fixedly connected to the No. 1 water collection pipe (10). The bottom of the trough-shaped cooling cover (9) is fixedly installed with the No. 2 water collection pipe (11). The bottom end of the No. 2 water collection pipe (11) is fixedly installed on one side of the No. 1 water collection pipe (10). The bottom end of the No. 2 water collection pipe (11) is connected to the inside of the No. 1 water collection pipe (10).

4. The protective structure for a medium-high frequency induction furnace coil according to claim 3, characterized in that: A lower annular guide pipe (12) is fixedly provided below the induction furnace coil body (1). The bottom end of the first water collection pipe (10) is fixedly installed on the top of the lower annular guide pipe (12). The bottom end of the first water collection pipe (10) is connected to the interior of the lower annular guide pipe (12). A drain pipe (13) is fixedly installed on one side of the lower annular guide pipe (12).

5. The protective structure for a medium-high frequency induction furnace coil according to claim 1, characterized in that: An upper short-circuit ring (14) is provided between the induction furnace coil body (1) and the upper annular guide pipe (5), and a lower short-circuit ring (15) is provided between the induction furnace coil body (1) and the lower annular guide pipe (12). The upper short-circuit ring (14) and the lower short-circuit ring (15) are provided with an inlet end and an outlet end at both ends. The outer walls of the upper short-circuit ring (14) and the lower short-circuit ring (15) are fixedly installed on the inner wall between multiple magnetic yokes (2).

6. The protective structure for a medium-high frequency induction furnace coil according to claim 1, characterized in that: Support frames (3) are fixedly installed on the outer walls of multiple magnetic yokes (2). The number of support frames (3) is the same as the number of magnetic yokes (2). Mounting frames (4) are fixedly installed on the outer walls of the support frames (3). Multiple mounting ports (41) are opened on the outer walls of the mounting frames (4). The outer walls of the upper annular guide pipe (5) and the lower annular guide pipe (12) are fixedly installed on the inner walls between the multiple support frames (3).

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