CN207479795U - Induction heating head - Google Patents

Abstract

The utility model discloses an induction heating head, which comprises an inner lining fixing seat, a coil assembly, an induction plate, a heat insulation plate, a shielding ring and a cooling pipe, wherein the coil assembly comprises at least three induction coils, the induction coils are sequentially connected in series from inside to outside, the induction coils are embedded and fixed in the inner lining fixing seat, and a cooling channel for cooling liquid to flow is formed in the induction coils; the heat insulation plate is fixed on the top of the lining fixing seat, the sensing plate is fixed on the top of the heat insulation plate, and the shielding ring is fixed on the outer circumferential surface of the lining fixing seat; the cooling pipe is fixed on the lining fixing seat and welded on the shielding ring. The induction plate is heated by generating a magnetic field through the electrified induction coil to uniformly heat a product to be welded; the shielding ring can prevent the magnetic field generated by the induction coil in the radial direction from leaking and inducing the welded product; the cooling liquid circulates in the cooling channel and the cooling pipe, so that heat on the induction coil and the shielding ring is transmitted out in time to ensure the stable work of the induction heating head.

Description

Induction heating head

technical field

The utility model relates to the technical field of heating welding, in particular to an induction heating head.

Background technique

As an important welding processing technology, brazing technology is widely used in the welding process of the base and heating tube of products such as hot water pots and soybean milk machines. It uses an external heat source to heat the base and the heating tube, so that The brazing filler metal melts, and then the base and the heating tube are welded as one.

At present, most of the external heat sources use electric heating to heat the base and heating tubes. However, the existing electric heating methods have the disadvantages of poor electrothermal conversion efficiency, uneven heating, and poor working stability, resulting in local virtual welding between the base and the heating tube. If the welding effect is not good, after a long time of use, the base and the heating tube are prone to detachment, and the service life is short, which seriously affects the user experience of consumers.

Utility model content

The purpose of the utility model is to provide an induction heating head, which has the advantages of high electrothermal conversion efficiency, uniform heating and good working stability.

In order to achieve the above purpose, the utility model provides an induction heating head, which is suitable for brazing heating plate, including:

lining mount;

Coil assembly, the coil assembly includes at least three coils of induction coils, the induction coils are connected in series from the inside to the outside, the induction coils are embedded and fixed in the lining fixing seat, and there is formed in the induction coils for cooling Cooling channels for liquid circulation;

a heat insulation board, the heat insulation board is fixed on the top of the lining fixing seat;

an induction plate, the induction plate is fixed on the top of the heat shield;

a shielding ring, the shielding ring is fixed on the outer circumferential surface of the lining fixing seat; and

A cooling pipe, the cooling pipe is fixed on the lining fixing seat, and the cooling pipe is welded on the shielding ring.

Preferably, the induction coils in odd turns are located on the same level, the induction coils in even turns are located on the same level, and the position of the induction coils in even turns is lower than that of the induction coils in odd turns Location.

Preferably, the coil assembly includes three turns of the induction coil, the induction coils in the first and third turns are located at the same level, and the position of the induction coil in the second turn is lower than that in the first turn and the position of the induction coil for the third turn.

Preferably, an accommodating groove is formed on the top of the lining fixing seat, and the induction coils are all fixedly accommodated in the accommodating groove.

Preferably, the induction heating head further includes a first conductive connecting pipe and a second conductive connecting pipe, the upper end of the first conductive connecting pipe is connected to the inner end of the coil assembly, and the second conductive connecting pipe The upper end of the coil assembly is connected to the outer end of the coil assembly, and the first conductive connecting pipe and the second conductive connecting pipe are formed with a connecting channel communicating with the cooling channel.

Preferably, the first conductive connecting pipe includes a first upper connection section, a first transition section and a first lower connection section connected sequentially from top to bottom, and the first upper connection section is connected to the coil assembly At one end located on the inner side, the first upper connecting section is close to the outer side of the coil assembly, the first lower connecting section is located on the inner side of the coil assembly; the second conductive connecting pipe is connected sequentially from top to bottom The second upper connection section, the second transition section and the second lower connection section, the second upper connection section is connected to the outer end of the coil assembly, and the second upper connection section is located outside the coil assembly , the second lower connecting section is located inside the coil assembly.

Preferably, the induction heating head further includes a first cooling connection pipe and a second cooling connection pipe, the first cooling connection pipe includes a first upper cooling connection section, a first cooling transition section, and a first cooling transition section connected sequentially from top to bottom. section and the first lower cooling connection section, the first upper cooling connection section is connected to one end of the cooling pipe, the first upper cooling connection section is located outside the coil assembly, and the first lower cooling connection section Close to the inner side of the coil assembly; the second cooling connection pipe includes a second upper cooling connection section, a second cooling transition section, and a second lower cooling connection section sequentially connected from top to bottom, and the second upper cooling The connection section is connected to the other end of the cooling pipe, the second upper cooling connection section is located outside the coil assembly, and the second lower cooling connection section is close to the inside of the coil assembly.

Preferably, the shielding ring extends downward to form a shielding piece, and the shielding piece covers the first upper connection section, the second upper connection section, the first upper cooling connection section and the second upper cooling connection section. outside.

Preferably, the induction heating head further includes a first conductive connector, a second conductive connector, a first cooling connector and a second cooling connector, the first conductive connector is connected to the first lower connection The lower end of the segment, the second conductive connector is connected to the lower end of the second lower connecting segment; the first cooling connector is connected to the lower end of the first lower cooling connecting segment, and the second cooling connector connected to the lower end of the second lower cooling connection section.

Compared with the prior art, since the coil assembly of the induction heating head of the present invention includes at least three induction coils, the induction coils are connected in series from the inside to the outside, and the induction coils are embedded and fixed in the lining fixing seat, forming a There is a cooling channel for the circulation of the coolant, the heat shield is fixed on the top of the lining fixing seat, the induction plate is fixed on the top of the heat shield, the shielding ring is fixed on the outer circumferential surface of the lining fixing seat, and the cooling pipe is fixed on the inner Lining fixed seat, and the cooling pipe is welded on the shielding ring. Then, on the one hand, the induction coil generates a magnetic field to heat the induction plate, so that the product to be welded can be heated by the induction plate, and the induction plate can ensure uniform heating of the product to be welded; on the other hand, the shielding ring It can prevent the leakage of the magnetic field generated in the radial direction of the induction coil and prevent the magnetic field from being directly induced to the product to be welded; moreover, the heat on the induction coil and the shielding ring can be transferred out in a timely manner through the circulation of the cooling liquid in the cooling channel and cooling pipe. To prevent the temperature of the induction coil and the shielding ring from being too high, and to ensure that the induction heating of the induction plate is not affected by the heat shield, the structure is more reasonable, so as to ensure the stable operation of the induction heating head of the utility model, which greatly improves the stability of the work Therefore, it can prevent poor welding effects such as virtual welding, ensure that the welding effect of the products to be welded is good, and will not detach, prolong the service life of the products after welding, and greatly improve the user experience of consumers.

Description of drawings

Fig. 1 is a three-dimensional assembly diagram of the induction heating head of the present invention.

Fig. 2 is an exploded schematic view of the induction heating head of the present invention.

Detailed ways

Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.

Please refer to Fig. 1 and Fig. 2, the induction heating head 100 of the present utility model comprises liner fixed base 10, coil assembly 20, induction plate 50a, heat shield 50d, shielding ring 90 and cooling pipe (not shown in the figure), coil The assembly 20 includes at least three coils of induction coils 21, the induction coils 21 are connected in series from the inside to the outside, the induction coils 21 are embedded and fixed in the lining fixing seat 10, and a cooling channel for the circulation of the cooling liquid is formed in the induction coil 21; heat insulation The plate 50d is fixed on the top of the lining fixing seat 10, the induction plate 50a is fixed on the top of the heat shield 50d, the shielding ring 90 is fixed on the outer circumferential surface of the lining fixing seat 10; the cooling pipe is fixed on the lining fixing seat 10 , and the cooling pipe is welded on the shielding ring 90 . Then, on the one hand, the induction coil 21 that is energized generates a magnetic field to make the induction plate 50a heat, that is, the product to be welded can be heated by the induction plate 50a, and the product to be welded can be guaranteed to be uniformly heated by the induction plate 50a; on the other hand , the shielding ring 90 can prevent the magnetic field generated radially by the induction coil 21 from leaking out, avoiding the magnetic field from being directly induced to the product to be welded; moreover, the induction coil 21 and the shielding coil 21 can be shielded in a timely manner through the circulation of the cooling liquid in the cooling channel and the cooling pipe. The heat on the ring 90 is transferred out to prevent the temperature of the induction coil 21 and the shielding ring 90 from being too high, and to ensure that the induction heating of the induction plate 50a is not affected by the heat shield, and the structure is more reasonable to ensure the induction heating of the present utility model The stable work of the head 100 greatly improves the stability of the work; thus it can prevent the occurrence of poor welding effects such as virtual welding, ensure that the welding effect of the product to be welded is good, and will not detach, prolonging the life of the product after welding. The service life has greatly improved the user experience of consumers. Specifically, as follows:

Preferably, the induction coils 21 of the odd turns are located on the same level, the induction coils 21 of the even turns are located on the same level, and the positions of the induction coils 21 of the even turns are lower than the positions of the induction coils 21 of the odd turns, to ensure A uniformly distributed magnetic field is generated above the coil assembly 20, so that the induction plate 50a generates heat evenly. Specifically, in this embodiment, the coil assembly 20 includes three turns of the induction coil 21, the induction coils 21 of the first turn and the third turn are located at the same level, and the position of the induction coil 21 of the second turn is lower than that of the first turn. The position of the induction coil 21 of the third coil and the third coil can be adjusted to generate a uniformly distributed magnetic field above the coil assembly 20, so that the induction plate 50a generates heat evenly, and the structure is more reasonable and compact. Of course, the specific number of turns of the induction coil 21 included in the coil assembly 20 is not limited thereto, and in other embodiments, it can also be flexibly selected according to actual usage requirements, so details will not be repeated here.

Please refer to Fig. 2, the top of the lining fixing seat 10 is provided with accommodating groove 11, and the induction coils 21 are all fixedly accommodated in the accommodating groove 11, preferably, in this embodiment, in the accommodating groove Epoxy resin is poured into 11 to fix the induction coil 21 in the accommodating groove 11 . Furthermore, after pouring epoxy resin into the accommodating groove 11, the top of the lining fixing seat 10 is ground flat, so that the installation structure of the induction coil 21 is more reasonable. Wherein, the heat insulating plate 50d prevents the epoxy resin from adhering to the induction plate 50a due to high temperature heating and melting, so as to ensure that the induction heating of the induction plate 50a is not affected, and the structure is more reasonable.

Moreover, the induction heating head 100 of the present invention also includes a first conductive connecting pipe 30 and a second conductive connecting pipe 40, the upper end of the first conductive connecting pipe 30 is connected to the inner end of the coil assembly 20, and the second conductive connecting pipe The upper end of 40 is connected to the outer end of the coil assembly 20, and the first conductive connecting pipe 30 and the second conductive connecting pipe 40 are formed with a connecting channel communicating with the cooling channel to guide the coil assembly 20 to be electrically connected to the outside and The supply and circulation of cooling liquid, the structure is simpler and more reasonable. Specifically, in this embodiment, the first conductive connecting pipe 30 includes a first upper connecting section 31, a first transition section 32, and a first lower connecting section 33 connected sequentially from top to bottom. The first upper connecting section 31 Connected to the inner end of the coil assembly 20, the first upper connecting section 31 is close to the outer side of the coil assembly 20, the first lower connecting section 33 is located on the inner side of the coil assembly 20; the second conductive connecting pipe 40 includes sequential connections from top to bottom The second upper connection section 41, the second transition section 42 and the second lower connection section 43, the second upper connection section 41 is connected to the outer end of the coil assembly 20, and the second upper connection section 41 is located outside the coil assembly 20, The second lower connecting section 43 is located inside the coil assembly 20 , so that the structures of the first conductive connecting tube 30 and the second conductive connecting tube 40 are simple and reasonable.

Moreover, the induction heating head 100 of the present utility model also includes a first cooling connection pipe 60 and a second cooling connection pipe 70, and the first cooling connection pipe 60 includes a first upper cooling connection section 61, The first cooling transition section 62 and the first lower cooling connecting section 63, the first upper cooling connecting section 61 is connected to one end of the cooling pipe, the first upper cooling connecting section 61 is located outside the coil assembly 20, the first lower cooling connecting section 63 Close to the inner side of the coil assembly 20; the second cooling connection pipe 70 includes a second upper cooling connection section 71, a second cooling transition section 72, and a second lower cooling connection section 73 connected sequentially from top to bottom. The segment 71 is connected to the other end of the cooling pipe, the second upper cooling connecting segment 71 is located outside the coil assembly 20, and the second lower cooling connecting segment 73 is close to the inner side of the coil assembly 20 to guide the supply of the cooling pipe and the external cooling liquid Circulation, the structure is simpler and more reasonable.

Preferably, the shielding ring 90 extends downward to form a shielding piece 91, and the shielding piece 91 covers the first upper connection section 31, the second upper connection section 41, the first upper cooling connection section 61 and the second upper cooling connection section 71 to shield the magnetic field generated by the first upper connection section 31 and the second upper connection section 41 from leaking, and facilitate the heat transfer generated by the first upper cooling connection section 61 and the second upper cooling connection section 71 on the shielding sheet 91 Distributed, the structure is more reasonable.

Furthermore, the induction heating head 100 of the present invention also includes a first conductive connector 80a, a second conductive connector 80b, a first cooling connector 80c, and a second cooling connector 80d, the first conductive connector 80a is connected to the second On the lower end of the lower connecting section 33, the second conductive connector 80b is connected to the lower end of the second lower connecting section 43, so as to facilitate the electrical connection with the outside and the connection with the external cooling liquid supply device, and the installation is simpler and more convenient. The first cooling connection head 80c is connected to the lower end of the first lower cooling connection section 63, and the second cooling connection head 80d is connected to the lower end of the second lower cooling connection section 73, so as to facilitate the connection with the external cooling liquid supply device, and the installation is more convenient. For simplicity and convenience.

In conjunction with the accompanying drawings, the working principle of the induction heating head 100 of the present utility model is described in detail: through the first conductive connector 80a and the second conductive connector 80b, it is electrically connected to the outside, and connected to the cooling liquid supply device, then the electricity The induction coil 21 generates a magnetic field to heat the induction plate 50a, that is, the product to be welded can be heated by the induction plate 50a, and the uniform heating of the product to be welded can be guaranteed by the induction plate 50a. At the same time, the shielding ring 90 can prevent the magnetic field generated in the radial direction of the induction coil 21 from leaking out, preventing the magnetic field from being directly induced to the product to be welded. Wherein, the heat on the induction coil 21 and the shielding ring 90 is transferred out in a timely manner through the circulation of the cooling liquid in the cooling channel and the cooling pipe, so as to prevent the temperature of the induction coil 21 and the shielding ring 90 from being too high, so as to ensure the induction heating of the utility model. First 100 steady jobs.

Optionally, the induction heating head 100 of the present utility model can be applied to the welding process of the base and the heating pipe of products such as hot water pots and soybean milk machines. Of course, the specific application of the induction heating head 100 of the present utility model is not limited thereto. , in other embodiments, it can also be applied in other fields to meet different heating requirements, so details will not be repeated here.

Compared with the prior art, since the coil assembly 20 of the induction heating head 100 of the present invention includes at least three coils of induction coils 21, the induction coils 21 are connected in series from the inside to the outside, and the induction coils 21 are embedded and fixed on the lining fixing seat 10 Inside, the induction coil 21 is formed with a cooling passage for cooling liquid to circulate, the heat insulation plate 50d is fixed on the top of the lining fixing base 10, the induction plate 50a is fixed on the top of the heat insulation plate 50d, and the shielding ring 90 is fixed on the inner lining. On the outer peripheral surface of the seat 10 , the cooling pipe is fixed on the lining fixing seat 10 , and the cooling pipe is welded on the shielding ring 90 . Then, on the one hand, the induction coil 21 that is energized generates a magnetic field to make the induction plate 50a heat, that is, the product to be welded can be heated by the induction plate 50a, and the product to be welded can be guaranteed to be uniformly heated by the induction plate 50a; on the other hand , the shielding ring 90 can prevent the magnetic field generated radially by the induction coil 21 from leaking out, avoiding the magnetic field from being directly induced to the product to be welded; moreover, the induction coil 21 and the shielding coil 21 can be shielded in a timely manner through the circulation of the cooling liquid in the cooling channel and the cooling pipe. The heat on the ring 90 is transferred out to prevent the temperature of the induction coil 21 and the shielding ring 90 from being too high, and the induction heating of the induction plate 50a is not affected by the heat shield 50d, and the structure is more reasonable to ensure the induction of the utility model. The stable operation of the heating head 100 greatly improves the stability of the work; thus it can prevent the occurrence of poor welding effects such as virtual welding, ensure that the products to be welded have good welding effects, and will not detach, prolonging the length of the welding process. The service life is greatly improved, and the user experience of consumers is greatly improved.

What is disclosed above is only the preferred embodiment of the present utility model, and of course the scope of rights of the present utility model cannot be limited with this. Therefore, the equivalent changes made according to the patent scope of the utility model still belong to the scope covered by the utility model .

Claims (9)

1. An induction heating head, characterized in that, comprising: lining mount; Coil assembly, the coil assembly includes at least three coils of induction coils, the induction coils are connected in series from the inside to the outside, the induction coils are embedded and fixed in the lining fixing seat, and there is formed in the induction coils for cooling Cooling channels for liquid circulation; a heat insulation board, the heat insulation board is fixed on the top of the lining fixing seat; an induction plate, the induction plate is fixed on the top of the heat shield; a shielding ring, the shielding ring is fixed on the outer circumferential surface of the lining fixing seat; and A cooling pipe, the cooling pipe is fixed on the lining fixing seat, and the cooling pipe is welded on the shielding ring. 2. The induction heating head according to claim 1, wherein the induction coils in odd turns are located on the same horizontal plane, the induction coils in even turns are located on the same level, and the induction coils in even turns The position is lower than the position of the induction coil in odd turns. 3. The induction heating head according to claim 1, wherein the coil assembly comprises three coils of the induction coil, the induction coils of the first coil and the third coil are located on the same horizontal plane, and the induction coils of the second coil The position of the induction coil is lower than the position of the induction coil in the first turn and the third turn. 4 . The induction heating head according to claim 1 , wherein an accommodating groove is formed on the top of the lining fixing seat, and the induction coils are all fixedly accommodated in the accommodating groove. 5. The induction heating head according to claim 1, further comprising a first conductive connecting pipe and a second conductive connecting pipe, the upper end of the first conductive connecting pipe is connected to the inner end of the coil assembly The upper end of the second conductive connecting pipe is connected to the outer end of the coil assembly, and the first conductive connecting pipe and the second conductive connecting pipe are formed with a connecting channel communicating with the cooling channel. 6. The induction heating head according to claim 5, wherein the first conductive connecting pipe comprises a first upper connecting section, a first transition section and a first lower connecting section connected sequentially from top to bottom, The first upper connection section is connected to one end of the coil assembly on the inside, the first upper connection section is close to the outside of the coil assembly, and the first lower connection section is located on the inside of the coil assembly; The second conductive connecting pipe includes a second upper connection section, a second transition section, and a second lower connection section sequentially connected from top to bottom, and the second upper connection section is connected to one end of the coil assembly located on the outside, so The second upper connecting section is located outside the coil assembly, and the second lower connecting section is located inside the coil assembly. 7. The induction heating head according to claim 6, further comprising a first cooling connection pipe and a second cooling connection pipe, the first cooling connection pipe includes a first upper pipe connected sequentially from top to bottom. A cooling connection section, a first cooling transition section, and a first lower cooling connection section, the first upper cooling connection section is connected to one end of the cooling pipe, the first upper cooling connection section is located outside the coil assembly, The first lower cooling connection section is close to the inner side of the coil assembly; the second cooling connection pipe includes a second upper cooling connection section, a second cooling transition section and a second lower cooling connection sequentially connected from top to bottom section, the second upper cooling connection section is connected to the other end of the cooling pipe, the second upper cooling connection section is located outside the coil assembly, and the second lower cooling connection section is close to the coil assembly inside. 8. The induction heating head according to claim 7, wherein the shielding ring extends downwards to form a shielding sheet, and the shielding sheet is shielded from the first upper connection section, the second upper connection section, the second upper connection section, and the second upper connection section. One upper cooling connection section and the outer side of the second upper cooling connection section. 9. The induction heating head according to claim 7, further comprising a first conductive connector, a second conductive connector, a first cooling connector and a second cooling connector, the first conductive connector connected to the lower end of the first lower connection section, the second conductive connector is connected to the lower end of the second lower connection section; the first cooling connector is connected to the lower end of the first lower cooling connection section , the second cooling connection head is connected to the lower end of the second lower cooling connection section.