Improved electromagnetic coil

Abstract

The invention relates to the technical field of electromagnetic coils, in particular to an improved electromagnetic coil which comprises a coil assembly and a shell and further comprises a base and a waterproof sealing ring, the left end of the coil assembly extends into a second cavity of the shell, and a first lead pipe, a second lead pipe and a water outlet pipe of the coil assembly penetrate through a first positioning hole, a second positioning hole and a third positioning hole in the shell. According to the improved electromagnetic coil, the design of the shell and the wrapping post is optimized, the lead pipe can serve as a lead hole of the coil assembly and can also serve as a pouring sealant hole of the whole electromagnetic coil, space occupation of the shell and the wrapping post is reduced, and the space utilization rate is increased; the connecting hole and the horizontal connecting groove are formed in the base, the shell is communicated with the cooling liquid flow guide groove of the wrapping post, a large circulating water flow path from the outer side to the inner side of the electromagnetic coil and from the shell to the wrapping post is completed, and the cooling efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic coils, in particular to an improved electromagnetic coil. Background Art

[0002] Electromagnetic coils are also called inductor coils. Electromagnetic coils are devices that work on the principle of electromagnetic induction. When current flows through a wire, a certain electromagnetic field will be generated around the wire, and the wire of this electromagnetic field will induce the wires within the range of this electromagnetic field. The effect on the wire that generates the electromagnetic field is called "self-inductance", that is, the changing current generated by the wire itself generates a changing magnetic field, and this magnetic field further affects the current in the wire; the effect on other wires within the range of this electromagnetic field is called "mutual inductance".

[0003] The traditional method of waterproofing electromagnetic coils is generally potting or sealing ring waterproofing. Potting generally requires a corresponding mold. After potting, the finished product needs to be taken out of the mold and then cut mechanically. This method is cumbersome and labor-intensive. There is also a method of pouring sealant into the coil shell. At this time, since the lead wire position of the coil and the position of the shell glue hole are required, the design requirements of the shell are relatively high. The traditional method is to separate the lead wire position of the coil from the position of the shell glue hole. This is not only inconvenient in terms of design, but also has a great impact on the sealing of the electromagnetic coil. At the same time, since the coil is energized to generate a magnetic field, converting electrical energy into mechanical energy, the coil will heat up at this time. If the heat cannot be dissipated for a long time, it will lead to the risk of aging and damage of the coil. The traditional method is to set a coolant delivery trough on the shell, but this method has a low cooling efficiency and the effect is not significant.

[0004] To this end, we propose an improved electromagnetic coil. Summary of the invention

[0005] A technical problem to be solved by the present application is: the traditional method of waterproofing electromagnetic coils is generally potting or sealing ring waterproofing. Potting generally requires a corresponding mold. After potting, the finished product needs to be taken out of the mold and then cut mechanically. This method is relatively cumbersome and labor-intensive. There is also a method of pouring sealant into the coil shell. At this time, since the lead wire position of the coil and the position of the shell glue hole are required, the design requirements of the shell are relatively high. The traditional method is to separate the lead wire position of the coil from the position of the shell glue hole. This is not only inconvenient in terms of design, but also has a great impact on the sealing of the electromagnetic coil. At the same time, since the coil is energized to generate a magnetic field, converting electrical energy into mechanical energy, the coil will heat up at this time. The long-term inability to dissipate heat will lead to the risk of aging and damage to the coil. The traditional method is mostly to set a coolant delivery trough on the shell, but this method has a low cooling efficiency and the effect is not significant.

[0006] In order to solve the above technical problems, the embodiment of the present application provides an improved electromagnetic coil, including a coil assembly, a shell, a base, and a waterproof sealing ring;

[0007] The left end of the coil assembly extends into the second cavity of the shell, and the first lead tube, the second lead tube and the water outlet pipe of the coil assembly pass through the first positioning hole, the second positioning hole and the third positioning hole on the shell;

[0008] The right end of the coil assembly is detachably connected to the base and the waterproof sealing ring through fasteners.

[0009] In some embodiments, the coil assembly includes a winding post, an upper end plate, a lower end plate, and a coil body;

[0010] The coil body is wound on the winding column, the upper end of the winding column is fixedly connected to the upper end plate, the upper surface of the upper end plate is symmetrically provided with a first lead tube and a second lead tube, the lower surface of the upper end plate is symmetrically provided with a first lead hole and a second lead hole, the positions of the first lead hole and the second lead hole are correspondingly provided with the first lead tube and the second lead tube, and the diameters of the first lead hole and the second lead hole are the same as the inner diameters of the first lead tube and the second lead tube, and the first lead hole and the second lead hole penetrate the upper end plate;

[0011] A water outlet pipe is also provided on the upper surface of the upper end plate, the water outlet pipe is located on the inner side of the first lead pipe, and a water outlet trough is built in the water outlet pipe;

[0012] A first water diversion groove is also provided in the upper end plate, and the first water diversion groove is annular;

[0013] The first lead tube and the second lead tube serve as wire lead tubes for winding the coil body, and also cooperate with the first lead hole and the second lead hole to serve as the second cavity of the shell and cooperate with the base and the waterproof sealing ring to form a sealant injection hole for the non-sealed space to seal the space where the coil body is located.

[0014] In some embodiments, the winding column is provided with a first cavity, and the winding column is provided with a plurality of first guide grooves, the first guide grooves guide flow in a direction along the length direction of the winding column, and the first guide grooves are arranged in a ring along the cross section of the winding column;

[0015] The width of the first water diversion groove is equal to the width of the first flow guide groove, the outer diameter of the first water diversion groove is smaller than the diameter of the upper end plate, and the inner diameter of the first water diversion groove is larger than the radius of the first cavity;

[0016] The left end of the first water diversion groove is communicated with the water outlet groove of the water outlet pipe, and the right end of the first water diversion groove is communicated with the left end of the first guide groove.

[0017] In some embodiments, the lower end of the winding column is fixedly connected to the lower end plate, and a second water diversion groove is provided in the lower end plate, the second water diversion groove is connected to the right end of the first diversion groove, and the inner diameter and outer diameter of the second water diversion groove are the same as those of the first water diversion groove;

[0018] A first connecting hole is formed on the bottom surface of the lower end plate, and a left end of the first connecting hole is connected to the first guide groove;

[0019] The hole depth of the first connecting hole is determined according to the thickness of the lower end plate and actual conditions.

[0020] In some embodiments, the shell includes a shell body and a first flange, a water pipe is provided on the left end surface of the shell body, and a right end of the water pipe is connected to the second guide groove;

[0021] The second guide groove is spiral-shaped and is disposed on the side wall of the shell body in a circumferential manner;

[0022] The left end surface of the shell body is also provided with a first positioning hole, a second positioning hole, and a third positioning hole, and the first positioning hole and the third positioning hole are symmetrically arranged along the axis of the shell body;

[0023] The second positioning hole is arranged inside the third positioning hole;

[0024] The apertures of the first positioning hole, the second positioning hole and the third positioning hole are equal to the outer diameters of the first lead tube, the second lead tube and the water outlet pipe. The first lead tube, the second lead tube and the water outlet pipe can pass through the first positioning hole, the third positioning hole and the second positioning hole, corresponding to each hole one by one.

[0025] In some embodiments, the first flange is disposed on the right side of the shell body, and the first flange is integrally connected to the shell body;

[0026] The right end of the first flange includes a first plane, a second connecting hole, a second plane, a third plane, and a fourth plane;

[0027] A plurality of second connection holes are arranged on the first plane, the first plane is located at the outermost side of the right end of the first flange, the outer diameter of the first plane is larger than the outer diameter of the second plane, the second plane is recessed relative to the first plane along the direction of the second cavity, the third plane is an annular groove, the bottom surface of the third plane groove is lower than the top surface of the second plane, the outer diameter of the second plane is larger than the outer diameter of the third plane, the top surface of the fourth plane is equal to the top surface of the second plane, and the outer diameter of the fourth plane is smaller than the outer diameter of the third plane;

[0028] The first plane, the second plane and the third plane are arranged in an inverted step shape.

[0029] In some embodiments, a third connecting hole is arranged on the fourth plane, a left end of the third connecting hole is connected to the second guide groove, and the third connecting hole and the water pipe are arranged on one side of the shell.

[0030] In some embodiments, the base includes a protrusion, a fifth plane, a sixth plane, and a seventh plane;

[0031] The protrusion is located at the center of the top surface of the base, and the diameter of the protrusion is smaller than the inner diameter of the fifth plane;

[0032] The outer diameter of the fifth plane is smaller than the outer diameter of the sixth plane, and the outer diameter of the sixth plane is smaller than the outer diameter of the seventh plane;

[0033] The top surface of the fifth plane is lower than the top surface of the protrusion, the top surface of the sixth plane is lower than the top surface of the fifth plane, and the top surface of the seventh plane is lower than the top surface of the sixth plane;

[0034] A plurality of fourth connection holes are provided on the seventh plane. The fourth connection holes are through holes. The positions of the fourth connection holes correspond to the positions of the second connection holes one by one, and the diameters of the fourth connection holes are equal to those of the second connection holes.

[0035] The fifth plane, the sixth plane and the seventh plane are arranged in a stepped manner.

[0036] In some embodiments, the protrusion and the fifth plane form a groove, and the bottom surface of the groove is provided with a fifth connection hole and a sixth connection hole;

[0037] The fifth connecting hole and the sixth connecting hole are blind holes with the same length and diameter, and are arranged at a certain distance apart;

[0038] The fifth connecting hole and the sixth connecting hole are connected through a horizontal connecting groove;

[0039] The position of the fifth connecting hole corresponds to the position of the first connecting hole;

[0040] The diameter of the sixth connection hole is the same as that of the third connection hole, and the positions of the sixth connection hole and the third connection hole correspond.

[0041] In some embodiments, the diameter of the protrusion is equal to the diameter of the first cavity;

[0042] The position of the fifth plane corresponds to the position of the third plane, and the inner and outer diameters of the fifth plane are equal to those of the third plane. The inner and outer diameters of the fifth plane and the third plane are equal to the inner and outer diameters of the waterproof sealing ring.

[0043] The position of the sixth plane corresponds to the position of the second plane, and the inner and outer diameters of the sixth plane are equal to the inner and outer diameters of the second plane;

[0044] The position of the seventh plane corresponds to the position of the first plane, and the inner and outer diameters of the seventh plane are equal to the inner and outer diameters of the first plane.

[0045] The present invention has at least the following beneficial effects:

[0046] 1. The design of the shell and winding column has been optimized. The lead tube can be used as the lead hole of the coil assembly and as the injection sealant hole of the electromagnetic coil as a whole, which reduces the space occupied by the shell and winding column and improves the space utilization.

[0047] 2. By setting connection holes and horizontal connection grooves on the base, the shell and the cooling liquid guide groove of the winding column are connected, completing the large circulation water flow route from the outside to the inside of the electromagnetic coil and from the shell to the winding column, thereby improving the cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0049] Figure 2 It is a schematic diagram of the winding column structure of the present invention;

[0050] Figure 3 It is a cross-sectional view of the winding column structure of the present invention;

[0051] Figure 4 It is a front view and AA cross-sectional view of the winding column of the present invention;

[0052] Figure 5 It is a schematic diagram of the shell structure of the present invention;

[0053] Figure 6 It is a schematic structural diagram of the housing of the present invention from another angle;

[0054] Figure 7 It is a cross-sectional view of the shell structure of the present invention;

[0055] Figure 8 This is a schematic diagram of the base structure of the present invention;

[0056] Fig. 9 It is a cross-sectional view of the base structure of the present invention;

[0057] Fig.10 It is a cross-sectional view of the overall structure of the present invention;

[0058] Fig.11 It is an enlarged view of the cross-sectional view B of the overall structure of the present invention.

[0059] In the figure: 1-coil assembly; 2-shell; 3-base; 4-waterproof sealing ring; 5-bolt; 101-winding column; 102-upper end plate; 103-first lead pipe; 104-second lead pipe; 105-water outlet pipe; 106-first lead hole; 107-second lead hole; 108-first connecting hole; 109-first cavity; 110-first water guide groove; 111-water outlet groove; 112-first guide groove; 113-second water guide groove; 114-coil body; 115-lower end plate; 201-shell body; 202-first flange; 203-water pipe; 204-first positioning hole; 205-second positioning hole; 206-third positioning hole; 207-first plane; 208-second connecting hole; 209-second plane; 210-third plane; 211-fourth plane; 212-third connecting hole; 213-second cavity; 214-second guide groove; 301-protrusion; 302-fifth plane; 303-sixth plane; 304-seventh plane; 305-fourth connecting hole; 306-fifth connecting hole; 307-sixth connecting hole; 308-horizontal connecting groove. DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] Example 1: Please refer to Figure 1-11 , the present invention provides a technical solution: an improved electromagnetic coil, including a coil assembly 1, a shell 2, a base 3, and a waterproof sealing ring 4;

[0062] The left end of the coil assembly 1 extends into the second cavity 213 of the shell 2, and the first lead tube 103, the second lead tube 104, and the water outlet pipe 105 of the coil assembly 1 pass through the first positioning hole 204, the second positioning hole 205, and the third positioning hole 206 on the shell 2;

[0063] The right end of the coil assembly 1 is detachably connected to the base 3 and the waterproof sealing ring 4 via a fastener, and the fastener is a bolt 5 .

[0064] Furthermore, the coil assembly 1 includes a winding post 101 , an upper end plate 102 , a lower end plate 115 and a coil body 114 ;

[0065] The coil body 115 is wound on the winding post 101, the upper end of the winding post 101 is fixedly connected to the upper end plate 102, the upper surface of the upper end plate 102 is symmetrically provided with a first lead tube 103 and a second lead tube 104, the lower surface of the upper end plate 102 is symmetrically provided with a first lead hole 106 and a second lead hole 107, the positions of the first lead hole 106 and the second lead hole 107 are correspondingly provided with the first lead tube 103 and the second lead tube 104, and the diameters of the first lead hole 106 and the second lead hole 107 are the same as the inner diameters of the first lead tube 103 and the second lead tube 104, and the first lead hole 106 and the second lead hole 107 penetrate the upper end plate 102;

[0066] A water outlet pipe 105 is also provided on the upper surface of the upper end plate 102. The water outlet pipe 105 is located inside the first lead pipe 103. The water outlet pipe 105 has a water outlet tank 111 built therein.

[0067] A first water diversion groove 110 is also provided in the upper end plate 102, and the first water diversion groove 110 is annular;

[0068] The first lead tube 103 and the second lead tube 104 serve as wire lead tubes around which the coil body 114 is wound, and also cooperate with the first lead hole 106 and the second lead hole 107 to form a sealant injection hole for the non-sealed space as the second cavity 213 of the shell 2, the base 3, and the waterproof sealing ring 4, so as to seal the space where the coil body 114 is located.

[0069] Furthermore, the winding post 101 is provided with a first cavity 109, and the winding post 101 is provided with a plurality of first guide grooves 112, the guide direction of the first guide grooves 112 is along the length direction of the winding post 101, and the first guide grooves 112 are arranged in a ring along the cross section of the winding post 101;

[0070] The width of the first water diversion groove 110 is equal to the width of the first guide groove 112 , the outer diameter of the first water diversion groove 110 is smaller than the diameter of the upper end plate 102 , and the inner diameter of the first water diversion groove 110 is larger than the radius of the first cavity 109 ;

[0071] The left end of the first water diversion groove 110 is communicated with the water outlet groove 111 of the water outlet pipe 105 , and the right end of the first water diversion groove 110 is communicated with the left end of the first guide groove 112 .

[0072] Furthermore, the lower end of the winding column 101 is fixedly connected to the lower end plate 115, and a second water diversion groove 113 is provided in the lower end plate 115. The second water diversion groove 113 is connected to the right end of the first guide groove 112, and the inner diameter and outer diameter of the second water diversion groove 113 are the same as those of the first water diversion groove 110;

[0073] A first connecting hole 108 is formed on the bottom surface of the lower end plate 115, and a left end of the first connecting hole 108 is connected to the first guide groove 112;

[0074] The depth of the first connection hole 108 is determined according to the thickness of the lower end plate 115 and actual conditions.

[0075] Furthermore, the shell 2 includes a shell body 201 and a first flange 202. A water pipe 203 is disposed on the left end surface of the shell body 201, and the right end of the water pipe 203 is connected to the second guide groove 214.

[0076] The second guide groove 214 is spiral-shaped and is disposed around the side wall of the housing body 201;

[0077] The left end surface of the shell body 201 is also provided with a first positioning hole 204, a second positioning hole 205, and a third positioning hole 206. The first positioning hole 204 and the third positioning hole 206 are symmetrically arranged along the axis of the shell body 201;

[0078] The second positioning hole 205 is arranged inside the third positioning hole 206;

[0079] The apertures of the first positioning hole 204, the second positioning hole 205, and the third positioning hole 206 are equal to the outer diameters of the first lead tube 103, the second lead tube 104, and the water outlet pipe 105. The first lead tube 103, the second lead tube 104, and the water outlet pipe 105 can pass through the first positioning hole 204, the third positioning hole 206, and the second positioning hole 205, corresponding to each hole one by one.

[0080] Furthermore, the first flange 202 is disposed on the right side of the shell body 201, and the first flange 202 is integrally connected to the shell body 201;

[0081] The right end of the first flange 202 includes a first plane 207, a second connection hole 208, a second plane 209, a third plane 210, and a fourth plane 211;

[0082] A plurality of second connection holes 208 are arranged on the first plane 207, the first plane 207 is located at the outermost side of the right end of the first flange 202, the outer diameter of the first plane 207 is larger than the outer diameter of the second plane 209, the second plane 209 is recessed relative to the first plane 207 along the direction of the second cavity 213, the third plane 210 is an annular groove, the bottom surface of the third plane 210 groove is lower than the top surface of the second plane 209, the outer diameter of the second plane 209 is larger than the outer diameter of the third plane 210, the top surface of the fourth plane 211 is equal to the top surface of the second plane 209, and the outer diameter of the fourth plane 211 is smaller than the outer diameter of the third plane 210;

[0083] The first plane 207 , the second plane 209 , and the third plane 210 are arranged in an inverted stepped manner.

[0084] Furthermore, a third connecting hole 212 is provided on the fourth plane 211 , a left end of the third connecting hole 212 is communicated with the second guide groove 214 , and the third connecting hole 212 and the water pipe 203 are provided on one side of the shell 2 .

[0085] Further, the base 3 includes a protrusion 301, a fifth plane 302, a sixth plane 303, and a seventh plane 304;

[0086] The protrusion 301 is located at the center of the top surface of the base 3, and the diameter of the protrusion 301 is smaller than the inner diameter of the fifth plane 302;

[0087] The outer diameter of the fifth plane 302 is smaller than the outer diameter of the sixth plane 303 , and the outer diameter of the sixth plane 303 is smaller than the outer diameter of the seventh plane 304 ;

[0088] The top surface of the fifth plane 302 is lower than the top surface of the protrusion 301 , the top surface of the sixth plane 303 is lower than the top surface of the fifth plane 302 , and the top surface of the seventh plane 304 is lower than the top surface of the sixth plane 303 ;

[0089] A plurality of fourth connection holes 305 are provided on the seventh plane 304. The fourth connection holes 305 are through holes. The positions of the fourth connection holes 305 correspond to the positions of the second connection holes 208 one by one, and the diameter of the fourth connection holes 305 is equal to that of the second connection holes 208.

[0090] The fifth plane 302 , the sixth plane 303 , and the seventh plane 304 are arranged in a stepped manner.

[0091] Furthermore, the protrusion 301 and the fifth plane 302 form a groove, and the bottom surface of the groove is provided with a fifth connection hole 306 and a sixth connection hole 307;

[0092] The fifth connection hole 306 and the sixth connection hole 307 are blind holes with the same length and diameter, and are arranged at a certain distance apart;

[0093] The fifth connection hole 306 and the sixth connection hole 307 are connected through a horizontal connection groove 308;

[0094] The position of the fifth connection hole 306 corresponds to the position of the first connection hole 108;

[0095] The diameter of the sixth connection hole 307 is the same as that of the third connection hole 212 , and the sixth connection hole 307 corresponds to the position of the third connection hole 212 .

[0096] Further, the diameter of the protrusion 301 is equal to the diameter of the first cavity 109;

[0097] The position of the fifth plane 302 corresponds to the position of the third plane 210, and the inner and outer diameters of the fifth plane 302 are equal to the inner and outer diameters of the third plane 210. The inner and outer diameters of the fifth plane 302 and the third plane 210 are equal to the inner and outer diameters of the waterproof sealing ring 4.

[0098] The position of the sixth plane 303 corresponds to the position of the second plane 209, and the inner and outer diameters of the sixth plane 303 are equal to the inner and outer diameters of the second plane 209;

[0099] The position of the seventh plane 304 corresponds to the position of the first plane 207 , and the inner and outer diameters of the seventh plane 304 are equal to the inner and outer diameters of the first plane 207 .

[0100] Combine the following Figure 1-Figure 11 Introduce the assembly process of this device:

[0101] First, the coil body 115 is wound on the winding pole 101. The winding process can be that the first layer of the coil body 115 is first wound on the winding pole 101, and the lead wire of the first layer of the coil body 114 passes through the first lead hole 106 and the first lead tube 103, and then the second layer of the coil body 114 is wound on the winding pole 101, and the lead wire passes through the second lead hole 107 and the second lead tube 104; or the lead wire of the first layer of the coil body 114 passes through the second lead hole 107 and the second lead tube 104, and the second layer of the coil body 115 passes through the first lead hole 106 and the first lead tube 103.

[0102] Then, the coil assembly 1 is extended into the second cavity 213 of the shell 2, wherein the first positioning hole 204, the third positioning hole 206, and the second positioning hole 205 on the shell 2 correspond one to one with the first lead tube 103, the second lead tube 104, and the water outlet pipe 105 on the coil assembly 1, that is, the apertures of the first positioning hole 204, the third positioning hole 206, and the second positioning hole 205 are equal to the outer diameters of the first lead tube 103, the second lead tube 104, and the water outlet pipe 105, and the first lead tube 103, the second lead tube 104, and the water outlet pipe 105 can pass through the first positioning hole 204, the third positioning hole 206, and the second positioning hole 205.

[0103] Then, the base 3 is combined with the shell 2 and the waterproof sealing ring 4. The first plane 207, the second plane 209 and the third plane 210 on the first flange 202 of the shell 2 are arranged in an inverted trapezoidal shape, corresponding one-to-one with the seventh plane 304, the sixth plane 303 and the fifth plane 302 on the base 3, and the seventh plane 304, the sixth plane 303 and the fifth plane 302 on the base 3 are distributed in a trapezoidal shape, that is, the position of the fifth plane 302 corresponds to the position of the third plane 210, and the inner and outer diameters of the fifth plane 302 are equal to the inner and outer diameters of the third plane 210, and the inner and outer diameters of the fifth plane 302 and the third plane 210 are equal to the inner and outer diameters of the waterproof sealing ring 4; the position of the sixth plane 303 corresponds to the position of the second plane 209, and the inner and outer diameters of the sixth plane 303 are equal to the inner and outer diameters of the second plane 209; the position of the seventh plane 304 corresponds to the position of the first plane 207, and the inner and outer diameters of the seventh plane 304 are equal to the inner and outer diameters of the first plane 207.

[0104] The connection is then performed using the fastener bolts 5 . Since the second connection hole 208 on the first flange 202 of the shell 2 and the fourth connection hole 305 of the base 3 are at the same position and are equal in size, the connection can be performed using the bolts 5 .

[0105] Finally, the assembled electromagnetic coil is filled with sealant. The sealant can be poured in from the first lead tube 103 and observed to flow out of the second lead tube 104, or the sealant can be poured in from the second lead tube 104 and the sealant can be observed to flow out of the first lead tube 103, which is considered to be the completion of the filling. At this time, the lead wires of the coil body 114 in the first lead tube 103 and the second lead tube 104 together with the coil body 114 wound on the winding pole 101 are all filled with sealant, and the waterproof property is enhanced. At the same time, the sealant can provide protection for the coil body 114.

[0106] Combine the following Figure 10-11 Introduction, the cooling process of the input coolant of the electromagnetic coil:

[0107] When the electromagnetic coil is energized, the coil body 114 heats up. At this time, the cooling liquid is input into the water pipe 203 and passes through the second guide groove 214. The second guide groove 214 spirally surrounds the winding column 101, passes through the third connection hole 212, flows into the sixth connection hole 307, passes through the horizontal connection groove 308, passes through the fifth connection hole 306, flows into the first connection hole 108, flows into the second water diversion groove 113, passes through the first guide groove 112, passes through the first water diversion groove 110, and flows out of the water outlet pipe 105 through the water outlet groove 111, taking away the heat of the coil body 115. In this way, the cooling liquid is also input from the water pipe 203 of the shell 2, passes through the sixth connection hole 307, the horizontal connection groove 308, and the fifth connection hole 306 of the base 3, and then flows into the first guide groove 112 of the winding column 101, and finally flows out of the water outlet pipe 105, completing the large circulation water flow route from the outside to the inside of the coil body 114, thereby improving the cooling efficiency.

[0108] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0109] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. An improved electromagnetic coil, comprising a coil assembly (1) and a housing (2), characterized in that: It also includes a base (3) and a waterproof sealing ring (4); The left end of the coil assembly (1) extends into the second cavity (213) of the shell (2), and the first lead tube (103), the second lead tube (104), and the water outlet pipe (105) of the coil assembly (1) pass through the first positioning hole (204), the second positioning hole (205), and the third positioning hole (206) on the shell (2); The right end of the coil assembly (1) is detachably connected to the base (3) and the waterproof sealing ring (4) via a fastener.

2. The improved electromagnetic coil according to claim 1, characterized in that: The coil assembly (1) comprises a winding post (101), an upper end plate (102), a lower end plate (115) and a coil body (114); The coil body (115) is wound on the winding post (101), the upper end of the winding post (101) is fixedly connected to the upper end plate (102), the upper surface of the upper end plate (102) is symmetrically provided with a first lead tube (103) and a second lead tube (104), the lower surface of the upper end plate (102) is symmetrically provided with a first lead hole (106) and a second lead hole (107), the positions of the first lead hole (106) and the second lead hole (107) are corresponding to the first lead tube (103) and the second lead tube (104), and the diameters of the first lead hole (106) and the second lead hole (107) are the same as the inner diameters of the first lead tube (103) and the second lead tube (104), and the first lead hole (106) and the second lead hole (107) pass through the upper end plate (102); The upper surface of the upper end plate (102) is also provided with a water outlet pipe (105), the water outlet pipe (105) is located on the inner side of the first lead pipe (103), and the water outlet pipe (105) has a built-in water outlet groove (111); A first water diversion groove (110) is also provided in the upper end plate (102), and the first water diversion groove (110) is annular; The first lead tube (103) and the second lead tube (104) serve as lead tubes for the wires wound around the coil body (114), and cooperate with the first lead hole (106) and the second lead hole (107) to form a sealing glue injection hole for the non-sealed space in the second cavity (213) of the shell (2) and cooperate with the base (3) and the waterproof sealing ring (4) to seal the space where the coil body (114) is located.

3. The improved electromagnetic coil according to claim 2, characterized in that: The winding post (101) is provided with a first cavity (109), the winding post (101) is provided with a plurality of first guide grooves (112), the guide direction of the first guide grooves (112) is along the length direction of the winding post (101), and the first guide grooves (112) are arranged in a ring shape along the cross section of the winding post (101); The width of the first water diversion groove (110) is equal to the width of the first flow guide groove (112), the outer diameter of the first water diversion groove (110) is smaller than the diameter of the upper end plate (102), and the inner diameter of the first water diversion groove (110) is larger than the radius of the first cavity (109); The left end of the first water diversion groove (110) is in communication with the water outlet groove (111) of the water outlet pipe (105), and the right end of the first water diversion groove (110) is in communication with the left end of the first guide groove (112).

4. The improved electromagnetic coil according to claim 2, characterized in that: The lower end of the winding column (101) is fixedly connected to the lower end plate (115), and a second water diversion groove (113) is provided in the lower end plate (115). The second water diversion groove (113) is connected to the right end of the first guide groove (112), and the inner diameter and outer diameter of the second water diversion groove (113) are the same as those of the first water diversion groove (110); A first connecting hole (108) is provided on the bottom surface of the lower end plate (115), and a left end of the first connecting hole (108) is connected to the first guide groove (112); The hole depth of the first connection hole (108) is determined according to the thickness of the lower end plate (115) and actual conditions.

5. The improved electromagnetic coil according to claim 1, characterized in that: The shell (2) comprises a shell body (201) and a first flange (202); a water pipe (203) is provided on the left end surface of the shell body (201); and the right end of the water pipe (203) is connected to a second guide groove (214); The second guide groove (214) is spiral-shaped and is disposed around the side wall of the shell body (201); The left end surface of the shell body (201) is also provided with the first positioning hole (204), the second positioning hole (205), and the third positioning hole (206); the first positioning hole (204) and the third positioning hole (206) are symmetrically arranged along the axis of the shell body (201); The second positioning hole (205) is arranged on the inner side of the third positioning hole (206); The apertures of the first positioning hole (204), the second positioning hole (205), and the third positioning hole (206) are equal to the outer diameters of the first lead tube (103), the second lead tube (104), and the water outlet pipe (105); the first lead tube (103), the second lead tube (104), and the water outlet pipe (105) can pass through the first positioning hole (204), the third positioning hole (206), and the second positioning hole (205), corresponding to each hole one by one.

6. The improved electromagnetic coil according to claim 5, characterized in that: The first flange (202) is arranged on the right side of the shell body (201), and the first flange (202) is integrally connected to the shell body (201); The right end of the first flange (202) includes a first plane (207), a second connection hole (208), a second plane (209), a third plane (210), and a fourth plane (211); A plurality of second connection holes (208) are arranged on the first plane (207); the first plane (207) is located at the outermost side of the right end of the first flange (202); the outer diameter of the first plane (207) is greater than the outer diameter of the second plane (209); the second plane (209) is recessed relative to the first plane (207) along the direction of the second cavity (213); the third plane (210) is an annular groove; the bottom surface of the groove of the third plane (210) is lower than the top surface of the second plane (209); the outer diameter of the second plane (209) is greater than the outer diameter of the third plane (210); the top surface of the fourth plane (211) is at the same height as the top surface of the second plane (209); and the outer diameter of the fourth plane (211) is smaller than the outer diameter of the third plane (210); The first plane (207), the second plane (209), and the third plane (210) are arranged in an inverted step-like manner.

7. The improved electromagnetic coil according to claim 6, characterized in that: The third connection hole (212) is arranged on the fourth plane (211), the left end of the third connection hole (212) is connected to the second guide groove (214), and the third connection hole (212) and the water pipe (203) are arranged on one side of the shell (2).

8. The improved electromagnetic coil according to claim 7, characterized in that: The base (3) comprises a protrusion (301), a fifth plane (302), a sixth plane (303), and a seventh plane (304); The protrusion (301) is located at the center of the top surface of the base (3), and the diameter of the protrusion (301) is smaller than the inner diameter of the fifth plane (302); The outer diameter of the fifth plane (302) is smaller than the outer diameter of the sixth plane (303), and the outer diameter of the sixth plane (303) is smaller than the outer diameter of the seventh plane (304); The top surface of the fifth plane (302) is lower than the top surface of the protrusion (301), the top surface of the sixth plane (303) is lower than the top surface of the fifth plane (302), and the top surface of the seventh plane (304) is lower than the top surface of the sixth plane (303); A plurality of fourth connection holes (305) are provided on the seventh plane (304), the fourth connection holes (305) being through holes, the positions of the fourth connection holes (305) corresponding to the positions of the second connection holes (208) one by one, and the diameter of the fourth connection holes (305) being equal to that of the second connection holes (208); The fifth plane (302), the sixth plane (303), and the seventh plane (304) are arranged in a stepped manner.

9. The improved electromagnetic coil according to claim 8, characterized in that: The protrusion (301) and the fifth plane (302) form a groove, and the bottom surface of the groove is provided with a fifth connection hole (306) and a sixth connection hole (307); The fifth connecting hole (306) and the sixth connecting hole (307) are blind holes with the same length and diameter, and are arranged at a certain distance from each other; The fifth connection hole (306) and the sixth connection hole (307) are connected via a horizontal connection groove (308); The position of the fifth connection hole (306) corresponds to the position of the first connection hole (108); The diameter of the sixth connection hole (307) is the same as that of the third connection hole (212), and the positions of the sixth connection hole (307) and the third connection hole (212) correspond.

10. The improved electromagnetic coil according to claim 8, characterized in that: The diameter of the protrusion (301) is equal to the diameter of the first cavity (109); The position of the fifth plane (302) corresponds to the position of the third plane (210), and the inner and outer diameters of the fifth plane (302) are equal to the inner and outer diameters of the third plane (210), and the inner and outer diameters of the fifth plane (302) and the third plane (210) are equal to the inner and outer diameters of the waterproof sealing ring (4); The position of the sixth plane (303) corresponds to the position of the second plane (209), and the inner and outer diameters of the sixth plane (303) are equal to the inner and outer diameters of the second plane (209); The position of the seventh plane (304) corresponds to the position of the first plane (207), and the inner and outer diameters of the seventh plane (304) are equal to the inner and outer diameters of the first plane (207).

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