Electromagnetic coil built-in heating structure of electromagnetic heater

Abstract

The utility model discloses an electromagnetic coil built-in heating structure of an electromagnetic heater, which comprises a closed shell, the closed shell is used for insulating and closing an electromagnetic induction wire, a heat exchange tube group is arranged in the closed shell, an electromagnetic heating assembly is arranged in the closed shell, and the electromagnetic heating assembly is arranged in the closed shell. The electromagnetic heating device is provided with the heat exchange tube set and the electromagnetic heating assembly, the electromagnetic heating assembly is arranged on the inner side of the heat exchange tube set, the electromagnetic induction coil is arranged in a built-in mode, traditional resistance heating is replaced by electromagnetic induction heating, and the electromagnetic heating effect is improved. Heat loss and potential nitrogen harm caused by nitrogen filling are avoided, pollutants such as smoke dust and waste gas cannot be generated, the device is more environmentally friendly and sanitary, the heating efficiency is improved, the temperature rising speed is increased, and the temperature control accuracy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic heaters, and in particular relates to an electromagnetic coil built-in heating structure of an electromagnetic heater. Background Art

[0002] Electromagnetic heating technology has been widely used in various fields of industrial heating. The working principle of electromagnetic induction heating is mainly based on Faraday's law of electromagnetic induction. Its core is to use electromagnetic induction to convert electrical energy into heat energy: when an alternating current passes through an induction coil, an alternating magnetic field is generated, which generates eddy currents within the conductor placed within it. As the eddy currents flow within the conductor, the electrons in the conductor accelerate and generate heat. Compared with other heating methods, this heating method can be connected to high voltage electricity, has a faster heating rate, stronger temperature control capabilities, and avoids direct contact with the heating medium. In high-voltage working environments, electromagnetic heating technology can eliminate the cost of transformers compared to resistance heating, significantly reducing equipment costs.

[0003] Traditional electric heaters in the polysilicon field mostly use resistance heating, such as the radiation heater described in Chinese patent CN104061684 A. This resistance heater mainly heats the pipes through radiation heat transfer. The pipes are staggered inside the device, and electric heating cores are evenly arranged on the outside and inside of the pipes. The inside of the device is filled with nitrogen, and the medium to be heated exchanges heat with the pipes to achieve the heating purpose.

[0004] The advantages of the above patent are relatively high thermal efficiency and the ability to adopt an explosion-proof structure, but there are also some disadvantages:

[0005] 1. The actual heating efficiency is low and it consumes more energy than electromagnetic induction heating;

[0006] 2. The main heat transfer mode of the equipment is radiation heat transfer, but considering that nitrogen is needed to prevent oxidation of the resistance wire, nitrogen will absorb some heat, resulting in some actual heat loss;

[0007] 3. Resistance heating takes a long time to reach the preset temperature, and the heating speed is relatively slow. For some working conditions that require a high heating rate, resistance heating has fatal defects;

[0008] 4. The temperature control of resistance heating is not precise, which may cause large temperature deviation. In many working conditions, heating uniformity must be considered, otherwise it will cause irreversible damage to the heated medium.

[0009] 5. Resistance heating may produce pollutants such as smoke, exhaust gas, etc. in some cases, and its environmental protection is relatively poor and does not meet the current national environmental protection requirements;

[0010] For this purpose, we propose an electromagnetic heater with an electromagnetic coil built-in heating structure. Utility Model Content

[0011] The purpose of the utility model is to provide an electromagnetic coil built-in heating structure of an electromagnetic heater to solve the problems raised in the above background technology.

[0012] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an electromagnetic coil built-in heating structure of an electromagnetic heater, comprising:

[0013] A closed shell, the closed shell is used to insulate and seal the electromagnetic induction line;

[0014] a heat exchange tube group, wherein the heat exchange tube group is arranged in the closed shell;

[0015] An electromagnetic heating component is arranged in the closed shell, and the electromagnetic heating component is arranged on the inner side of the heat exchange tube group.

[0016] Preferably, the outside of the heat exchange tube group is wrapped with a heat insulation layer.

[0017] Preferably, the electromagnetic heating assembly includes an electromagnetic induction coil and an insulating column, the electromagnetic induction coil is spirally wound on the insulating column, the electromagnetic induction coil is spirally provided with equally spaced guide bars, and a cooling fluid is passed through the electromagnetic induction coil.

[0018] Preferably, the heat exchange tube group is in a square structure and is arranged in the closed shell in a waist-shaped circulation manner.

[0019] Preferably, a plurality of electromagnetic heating components are provided, and the plurality of electromagnetic heating components are arranged at equal intervals on the inner side of the heat exchange tube group.

[0020] Preferably, the heat exchange tube group is arranged in a ring-shaped spiral structure in the closed shell.

[0021] Preferably, the heat exchange tube group is a heat exchange pipe with a spiral structure.

[0022] Preferably, the electromagnetic heating component is provided with one, and the electromagnetic heating component is arranged on the inner side of the heat exchange tube group.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The utility model is equipped with a heat exchange tube group and an electromagnetic heating component. The electromagnetic heating component is arranged on the inner side of the heat exchange tube group and is arranged in a built-in electromagnetic induction coil. Electromagnetic induction heating replaces traditional resistance heating, avoiding heat loss and potential nitrogen hazards caused by filling nitrogen, and does not generate pollutants such as smoke and exhaust gas. It is more environmentally friendly and hygienic, and improves heating efficiency, accelerates the temperature rise speed, and enhances temperature control accuracy.

[0025] 2. The utility model adopts an electromagnetic heating component with a guide strip, which is arranged in a spiral manner to destroy the laminar boundary layer of the inner tube of the electromagnetic heating component, so that the flow of the cooling liquid reaches sufficient turbulence, has autonomous anti-scaling and cleaning functions, self-compensates for temperature stress, and reduces the loss of the electromagnetic heating component;

[0026] 3. The electromagnetic heating component of the utility model adopts a guide strip with an inner spiral structure and adopts a built-in cooling fluid heat dissipation method to enhance the heat dissipation capacity of the electromagnetic heating component and improve the service life of the electromagnetic heating component. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a side sectional structural diagram of the present utility model;

[0028] Figure 2 This is a schematic diagram of a top-view cross-sectional structure of the present utility model;

[0029] Figure 3 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0030] Figure 4 This is a schematic structural diagram of the electromagnetic heating assembly of the present invention;

[0031] Figure 5 This is a side sectional structural diagram of the present utility model;

[0032] Figure 6 It is a schematic diagram of the main cross-sectional structure of the present utility model.

[0033] In the figure: 1, closed shell; 2, heat exchange tube group; 3, electromagnetic heating component; 301, electromagnetic induction coil; 302, insulating column. DETAILED DESCRIPTION

[0034] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0035] like Figures 1-4 As shown, the electromagnetic coil built-in heating structure of the electromagnetic heater provided by the present invention includes:

[0036] A closed shell 1 is used for insulating and enclosing the electromagnetic induction line;

[0037] The heat exchange tube group 2 is arranged in the closed shell 1. The outside of the heat exchange tube group 2 is wrapped with a heat insulation layer. The heat exchange tube group 2 has a square structure and is arranged in the closed shell 1 in a waist-shaped circulation manner.

[0038] The electromagnetic heating component 3 is arranged in the closed shell 1, and the electromagnetic heating component 3 is arranged on the inner side of the heat exchange tube group 2. There are several electromagnetic heating components 3, and the several electromagnetic heating components 3 are arranged on the inner side of the heat exchange tube group 2 at equal intervals. The electromagnetic heating component 3 includes an electromagnetic induction coil 301 and an insulating column 302. The electromagnetic induction coil 301 is spirally wound on the insulating column 302. The electromagnetic induction coil 301 is spirally arranged with equal-spaced guide strips, and a cooling fluid is passed into the electromagnetic induction coil 301.

[0039] like Figure 4-Figure 6 As shown, the electromagnetic coil built-in heating structure of the electromagnetic heater provided by the present invention includes:

[0040] A closed shell 1 is used for insulating and enclosing the electromagnetic induction line;

[0041] The heat exchange tube group 2 is arranged in the closed shell 1. The outside of the heat exchange tube group 2 is wrapped with a heat insulation layer. The heat exchange tube group 2 is annular and spirally arranged in the closed shell 1. The heat exchange tube group 2 is a heat exchange pipe with a spiral structure;

[0042] The electromagnetic heating component 3 is arranged in the closed shell 1, and the electromagnetic heating component 3 is arranged on the inner side of the heat exchange tube group 2. The electromagnetic heating component 3 is provided with one, and one electromagnetic heating component 3 is arranged on the inner side of the heat exchange tube group 2. The electromagnetic heating component 3 includes an electromagnetic induction coil 301 and an insulating column 302. The electromagnetic induction coil 301 is spirally wound on the insulating column 302. The electromagnetic induction coil 301 is spirally provided with equally spaced guide bars, and a cooling fluid is passed into the electromagnetic induction coil 301.

[0043] The utility model is provided with a heat exchange tube group 2 and an electromagnetic heating component 3. The electromagnetic heating component 3 is arranged on the inner side of the heat exchange tube group 2 and is arranged in a built-in electromagnetic induction coil manner. Electromagnetic induction heating replaces traditional resistance heating, thereby avoiding heat loss and potential nitrogen hazards caused by filling with nitrogen, and does not generate pollutants such as smoke and exhaust gas. It is more environmentally friendly and hygienic, and improves heating efficiency, accelerates the temperature rise speed, and improves temperature control accuracy.

[0044] The utility model adopts an electromagnetic heating component 3 with a guide strip, which is arranged in a spiral manner to destroy the laminar boundary layer of the inner tube of the electromagnetic heating component 3, so that the flow of the cooling liquid reaches sufficient turbulence, has autonomous anti-scaling and cleaning, self-compensation for temperature stress, and reduces the loss of the electromagnetic heating component 3;

[0045] The electromagnetic heating component 3 of the utility model adopts a guide strip with an inner spiral structure and adopts a built-in cooling fluid heat dissipation method, thereby enhancing the heat dissipation capacity of the electromagnetic heating component 3 and increasing the service life of the electromagnetic heating component 3.

[0046] To sum up, the method of using the electromagnetic coil built-in heating structure of the electromagnetic heater provided in this embodiment is as follows: when in use, the fluid to be heated is passed into the heat exchange tube group 2, and the high-frequency AC power supply is connected to the electromagnetic heating component 3. An alternating magnetic field is generated around the electromagnetic heating component 3, and the heat exchange tube group 2 in the alternating magnetic field generates induced eddy currents to generate heat, thereby causing the heat exchange tube group 2 to heat the fluid to be heated; during the electromagnetic heating process, a cooling fluid is passed into the electromagnetic heating component 3, and the cooling fluid cools the electromagnetic heating component 3.

[0047] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic heater with an electromagnetic coil having a built-in heating structure, characterized in that: include: A closed shell (1), the closed shell (1) is used to insulate and close the electromagnetic induction line; A heat exchange tube group (2), the heat exchange tube group (2) being arranged in the closed shell (1); An electromagnetic heating component (3), wherein the electromagnetic heating component (3) is arranged in the closed shell (1), and the electromagnetic heating component (3) is arranged on the inner side of the heat exchange tube group (2).

2. The electromagnetic coil built-in heating structure of the electromagnetic heater according to claim 1, characterized in that: The exterior of the heat exchange tube group (2) is wrapped with a heat insulation layer.

3. The electromagnetic coil built-in heating structure of the electromagnetic heater according to claim 1, characterized in that: The electromagnetic heating assembly (3) comprises an electromagnetic induction coil (301) and an insulating column (302), wherein the electromagnetic induction coil (301) is spirally wound on the insulating column (302), and the electromagnetic induction coil (301) is spirally provided with guide bars at equal intervals, and a cooling fluid is passed into the electromagnetic induction coil (301).

4. The electromagnetic coil built-in heating structure of the electromagnetic heater according to claim 2, characterized in that: The heat exchange tube group (2) is in a square structure and is arranged in a waist-shaped circulation manner in the closed shell (1).

5. The electromagnetic coil built-in heating structure of the electromagnetic heater according to claim 3, characterized in that: A plurality of electromagnetic heating components (3) are provided, and the plurality of electromagnetic heating components (3) are arranged at equal intervals on the inner side of the heat exchange tube group (2).

6. The electromagnetic coil built-in heating structure of the electromagnetic heater according to claim 2, characterized in that: The heat exchange tube group (2) is arranged in a ring-shaped spiral structure within the closed shell (1).

7. The electromagnetic coil built-in heating structure of the electromagnetic heater according to claim 6, characterized in that: The heat exchange tube group (2) is a heat exchange pipe with a spiral structure.

8. The electromagnetic coil built-in heating structure of the electromagnetic heater according to claim 7, characterized in that: One electromagnetic heating component (3) is provided, and one electromagnetic heating component (3) is arranged on the inner side of the heat exchange tube group (2).

Images