Electromagnetic heating device

Abstract

The utility model relates to the field of magnetic metal component heating and heat preservation technology, especially to an electromagnetic heating device, which comprises a heating plate and a controller installed on the outside of a heated body, the heating plate comprises a base layer, an electromagnetic heating coil and a protective layer arranged in sequence from inside to outside, and the electromagnetic heating coil is electrically connected with the controller. The heating plate can be made into a shape matching the heated body according to the shape adaptability, adopts a non-contact heating heat conduction heating mode, has higher heating efficiency and is less affected by the external environment, the main material of the heating plate has the advantages of sealing, waterproofness, insulation, corrosion resistance, high strength and the like, can effectively protect the embedded electromagnetic heating coil, is suitable for various complex working conditions such as indoor or outdoor, and reduces the maintenance cost in the later period. When installed on site, it can be completed by installing simple components such as tension springs and screws in several steps, and disassembly and maintenance are also very convenient.

Description

Technical Field

[0001] This utility model relates to the field of heating and heat preservation technology for magnetically conductive metal components, and in particular to an electromagnetic heating device. Background Technology

[0002] In the early 20th century, electric heating technology began to be applied to pipeline heating, leading to the emergence of heating equipment such as electric blankets and electric heating tapes. Currently, the heating technology used in domestic industrial sites mainly involves heating objects (such as pipes) by wrapping them with electric heating tape, a contact heating method. However, this method has the following problems in its application: (1) Safety hazards: The heat tracing cable may cause a short circuit in the local circuit of the heat tracing cable due to collision, squeezing, aging, etc.; the heat tracing cable may cause a fire due to the increased resistance value at the break point during maintenance, which may also cause a fire; the heat tracing cable is in close contact with the pipeline, and if there is a leakage, the pipeline will be charged with strong electricity, which may easily cause electric shock to personnel.

[0003] (2) Low heating efficiency: Contact heating equipment uses heat conduction to heat, which is greatly affected by the contact area, and the heating efficiency is low in principle; after long-term use, the heating cable may loosen, causing the contact area to decrease, which will reduce the heating efficiency.

[0004] (3) Short service life: Contact heating equipment is resistance heating, which is prone to aging after long-term use and has a short service life.

[0005] (4) High application cost: The heating efficiency of contact heating equipment is greatly affected by the contact area. In order to ensure the heating effect, it needs to be in close contact with the heated body and must cover the entire heated body, which will increase the hardware cost. As the heating efficiency decreases with the increase of usage time, the equipment replacement cycle becomes shorter, which indirectly increases the usage cost. Equipment replacement requires the removal of the insulation layer and reinstallation, which increases the cost of replacement materials and labor costs.

[0006] (5) Maintenance is difficult: The contact heating equipment is fully installed. If a fault occurs, the insulation layer must be peeled off and a full inspection must be carried out to find the fault point. This is time-consuming and laborious. After the repair, the insulation layer must be restored, making the maintenance very complicated. In addition, due to the inaccurate temperature control, daily inspections are required. Utility Model Content

[0007] In order to solve the problems existing in the prior art, the present invention provides an electromagnetic heating device.

[0008] The electromagnetic heating device provided by this utility model adopts the following technical solution: An electromagnetic heating device includes a heating plate and a controller installed on the outside of the object to be heated. The heating plate includes a base layer, an electromagnetic heating coil and a protective layer arranged sequentially from the inside to the outside. The electromagnetic heating coil is electrically connected to the controller.

[0009] By adopting the above technical solution, the electromagnetic heating device can be installed every few meters or tens of meters along the extension direction of the heated body according to engineering needs. The operator can adjust the power of the electromagnetic heating coil through the controller to achieve precise temperature control. The heating plate can be adapted to match the shape of the heated body. It adopts a non-contact heating heat conduction heating method, which has higher heating efficiency and is less affected by the external environment. The heating plate can effectively protect the embedded electromagnetic heating coil and is suitable for various complex working conditions such as indoor or outdoor, reducing the later maintenance cost.

[0010] Optionally, the controller is located above the heated body, the heating plate is located below the heated body, and a tension spring connects the heating plate and the controller.

[0011] By adopting the above technical solution, the heating plate and controller can be effectively fixed with tension springs to maintain their respective good working condition, while facilitating the overall installation and disassembly.

[0012] Optionally, the heating plate is threaded with screws for abutting against the heated body to facilitate adjustment of the distance between them.

[0013] By adopting the above technical solution, workers can adjust the distance between the heating plate and the heated object by turning the screws to adapt to different environmental requirements.

[0014] Optionally, a receiving groove is provided on the outer wall of the base layer, and the electromagnetic heating coil is embedded and fixed in the receiving groove.

[0015] By adopting the above technical solution, the electromagnetic heating coil is located in the receiving groove, which facilitates the protection of the electromagnetic heating coil.

[0016] Optionally, the electromagnetic heating coil is fixed on the soft insulating layer, and the soft insulating layer is fixed to the outer wall of the base layer.

[0017] By adopting the above technical solution, the electromagnetic heating coil is located on the soft insulation layer, which facilitates the installation and fixing of the electromagnetic heating coil.

[0018] Optionally, the base layer and protective layer can be made of heat-resistant, insulating, and corrosion-resistant materials.

[0019] By adopting the above technical solutions, the heating plate can be applied to more challenging environments.

[0020] Optionally, an insulation layer is provided between the heating plate and the heated body.

[0021] By adopting the above technical solution, it is easy to maintain the temperature of the heated body.

[0022] Optionally, the electromagnetic heating coil is in the shape of a circular involute or a rectangular involute.

[0023] By adopting the above technical solution, electromagnetic heating coils with different structural forms can be selected as needed.

[0024] Optionally, the controller has a remote control module.

[0025] By adopting the above technical solution, it is convenient for staff to remotely collect data and remotely communicate and control the electromagnetic heating coil power to achieve precise digital control.

[0026] In summary, this utility model has at least one of the following beneficial technical effects: 1. Electromagnetic heating devices can be installed every few meters or tens of meters along the direction of the heated body, according to engineering needs. The staff can adjust the power of the electromagnetic heating coil through the controller to achieve precise temperature control. 2. The heating plate can be adapted to match the shape of the object being heated, and adopts a non-contact heating method of heat conduction, which has higher heating efficiency and is less affected by the external environment; 3. The heating plate can effectively protect the embedded electromagnetic heating coil and is suitable for various complex working conditions such as indoor or outdoor use, reducing later maintenance costs. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the electromagnetic heating device according to an embodiment of the present invention.

[0028] Figure 2 This is a cross-sectional view of the heating plate according to an embodiment of the present invention.

[0029] Figure 3 This is one of the structural forms of the electromagnetic heating coil in this utility model embodiment.

[0030] Figure 4 This is the second structural form of the electromagnetic heating coil in this utility model embodiment.

[0031] Explanation of reference numerals in the attached drawings: 1. Heated body; 2. Insulation layer; 3. Heating plate; 30. Base layer; 300. Receiving groove; 31. Electromagnetic heating coil; 32. Protective layer; 4. Controller; 5. Tension spring; 6. Screw. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 - Appendix Figure 4 The present invention will be described in further detail below.

[0033] This utility model discloses an electromagnetic heating device. (Refer to...) Figure 1The heated body 1 is a pipe, and the pipe is covered with an insulation layer 2. The electromagnetic heating device includes a heating plate 3 installed below the insulation layer 2, a controller 4 installed above the insulation layer 2, a tension spring 5 connecting the heating plate 3 and the controller 4, and a screw 6 passing through the heating plate 3.

[0034] Reference Figure 1 and Figure 2 To accommodate the shape of the pipe, the heating plate 3 in this embodiment is a semi-circular plate. In other embodiments, it can also be designed into a corresponding shape according to the shape of the object to be heated, such as rectangular or irregular, and is not limited here. The heating plate 3 includes a base layer 30, an electromagnetic heating coil 31, and a protective layer 32 arranged sequentially from the inside to the outside.

[0035] Reference Figures 2-4 The base layer 30 is made of heat-resistant, insulating, and corrosion-resistant materials, such as epoxy resin. The outer wall of the base layer 30 is provided with a receiving groove 300. The receiving groove 300 can be a double circular involute groove or a rectangular single involute groove. The electromagnetic heating coil 31 is adapted to the receiving groove 300 and is embedded and fixed in the receiving groove 300. The output end of the electromagnetic heating coil 31 can be insulated by using heat shrink tubing for insulation and then installing a fiberglass flexible tube sheath. The output hole is sealed with insulating glue, thereby achieving effective sealing of the electromagnetic heating coil 31.

[0036] The protective layer 32 is also made of heat-resistant, insulating, and corrosion-resistant materials. Specifically, it can be made using a multi-layer film covering and bonding process, continuously covering and pasting it onto the base layer 30 to achieve the thickness required by the on-site environment. In other embodiments, the electromagnetic heating coil 31 can be first pasted onto a soft insulating layer, such as insulating paper or insulating cloth, and then the soft insulating layer can be pasted onto the outer wall of the base layer 30. This avoids the need to use a CNC machine tool to open a receiving groove 300 on the outer wall of the base layer 30.

[0037] Reference Figure 1 and Figure 2 The controller 4 is electrically connected to the electromagnetic heating coil 31. The controller 4 is equipped with circuit components, a heat sink, and a remote control module, enabling precise digital control of the power of the electromagnetic heating coil 31 through remote data acquisition and remote communication control. Four tension springs 5 ​​are provided, each connected to one of the four ends of the heating plate 3. The elastic tension of the tension springs 5 ​​effectively fixes the heating plate 3 to the bottom of the insulation layer 2. Four screws 6 are provided, evenly distributed at both ends of the heating plate 3. The screws 6 can be screwed into the heating plate 3 and the insulation layer 2, and abut against the heated body 1, facilitating control of the distance between the electromagnetic heating coil 31 and the heated body 1, for example, controlling the distance between them to be between 10-20 mm.

[0038] The implementation principle of the electromagnetic heating device in this embodiment is as follows: The electromagnetic heating device can be installed in sets every few meters or tens of meters along the extension direction of the heated body 1, according to engineering needs. The heating plate 3 is attached to the bottom of the insulation layer 2, and the controller 4 is placed on top of the insulation layer 2. A tension spring 5 connects the heating plate 3 and the controller 4. Screws 6 are used to adjust the distance between the heating plate 3 and the heated body 1. Operators can remotely control the power of the electromagnetic heating coil 31 through the controller 4, thereby achieving precise temperature control.

[0039] The heating plate 3 can be custom-made to match the shape of the object being heated 1. It adopts a non-contact heat conduction heating method, which has higher heating efficiency and is less affected by the external environment. The main body material of the heating plate 3 has advantages such as sealing and waterproofing, insulation, corrosion resistance, and high strength, which can effectively protect the embedded electromagnetic heating coil 31. It is suitable for various complex working conditions such as indoor or outdoor use, reducing later maintenance costs. During on-site installation, it can be completed in a few simple steps using only simple components such as tension springs 5 ​​and screws 6. Disassembly and maintenance are also extremely convenient.

[0040] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An electromagnetic heating device, characterized in that: It includes a heating plate (3) and a controller (4) installed on the outside of the heated body (1). The heating plate (3) includes a base layer (30), an electromagnetic heating coil (31) and a protective layer (32) arranged sequentially from the inside to the outside. The electromagnetic heating coil (31) is electrically connected to the controller (4).

2. The electromagnetic heating device according to claim 1, characterized in that: The controller (4) is located above the heated body (1), the heating plate (3) is located below the heated body (1), and a tension spring (5) connects the heating plate (3) and the controller (4).

3. The electromagnetic heating device according to claim 1, characterized in that: The heating plate (3) is threaded with screws (6) for abutting against the heated body (1) so as to adjust the distance between the two.

4. The electromagnetic heating device according to claim 1, characterized in that: A receiving groove (300) is provided on the outer wall of the base layer (30), and an electromagnetic heating coil (31) is embedded and fixed in the receiving groove (300).

5. The electromagnetic heating device according to claim 1, characterized in that: The electromagnetic heating coil (31) is fixed on the soft insulating layer, and the soft insulating layer is fixed on the outer wall of the base layer (30).

6. The electromagnetic heating device according to claim 1, characterized in that: The base layer (30) and the protective layer (32) are made of heat-resistant, insulating and corrosion-resistant materials.

7. The electromagnetic heating device according to claim 1, characterized in that: A heat insulation layer (2) is provided between the heating plate (3) and the heated body (1).

8. The electromagnetic heating device according to claim 4 or 5, characterized in that: The electromagnetic heating coil (31) is in the shape of a circular involute or a rectangular involute.

9. The electromagnetic heating device according to claim 1, characterized in that: The controller (4) has a remote control module.

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