An electromagnetic heating device

Abstract

The present invention relates to the field of efficient electromagnetic heating technology, and specifically relates to an electromagnetic heating device, that is, an electromagnetic heating element; the electromagnetic heating element includes a metal furnace body and heat insulation materials wrapped outside the furnace body. There is a temperature sensor inserted into the furnace body at the upper part of the metal furnace body for measuring the temperature of the heating liquid in the furnace body, a temperature controller for controlling the temperature of the furnace body, and a liquid level sensor for measuring the height of the liquid level in the furnace body. Inside the furnace body, there is a non-magnetic isolator connected and fixed to the bottom of the metal furnace body, with a gap between the two. Inside the isolator, there is a heating coil, and the heating coil is fixed on the coil frame and connected and fixed to the bottom of the isolator. The present invention completely eliminates magnetic field leakage, fully absorbs heat, has a simple production process structure, low cost, is convenient for maintenance and inspection, has a beautiful appearance, is the most efficient electromagnetic heating device at present, and fully meets the most important requirements of heating.

Description

Technical Field

[0001] The present invention belongs to the technical field of heating devices, and particularly relates to an efficient electromagnetic heating generating device. Background Art

[0002] As a heat source, electromagnetic heating generating devices have now been widely used in various industries. However, for the electromagnetic coils on the currently commonly used heating devices, they are generally wound outside the metal heating body. In this way, some of the electromagnetic fields cannot be fully utilized, and it will also cause the metal shell installed outside the electromagnetic heating body to heat up, resulting in heat loss. At the same time, the magnetic field leakage also makes the nearby electrical equipment vulnerable to electromagnetic field interference and cause harm. Moreover, the heat generated by the electromagnetic coil itself is not utilized either, and a large part of the efficiency of converting electrical energy into heat energy is wasted. At the same time, through observation, we found that only a very small part places the coil inside the heating body, and a metal material is wrapped outside as the heating body to heat the liquid in the container outside the heating body. The disadvantage of such a structure is that the heating body, as a point (column) heat source, heats the liquid, has a small contact area with the liquid, the temperature of the heated liquid is uneven, and the time for heating the liquid is relatively long. Summary of the Invention

[0003] Aiming at the problems of low electromagnetic conversion efficiency, electromagnetic field leakage, and small contact area between the heating body in the above device, the present invention can completely solve all the above problems, realize the full utilization of electrical energy and prevent electromagnetic field leakage. At the same time, it also increases the contact area between the heating body and the liquid, makes the temperature of the heated liquid uniform, and shortens the time for heating the liquid, achieving the purpose of saving energy.

[0004] The present invention realizes the above object through the following technical solutions:

[0005] An electromagnetic heating device, comprising a furnace body (1), a heat preservation layer (2), a non-magnetic isolation body (3), a coil support (4), a coil (5), a coil connector (6), a liquid level sensor (7) in the furnace, a liquid temperature sensor (8) in the furnace, a furnace body temperature controller (9), a liquid outlet (10), a liquid inlet 1 (12), a liquid inlet 2 (11), a sealing ring (13), a sealing flange (14), a coil support fixing ring (15), and a heat preservation rubber layer (16).

[0006] It is characterized in that: the outside of the furnace body (1) is wrapped with a heat-insulating heat preservation layer (2). The inner side of the heat preservation layer (2) is a heat preservation material such as asbestos or silicate with a thickness of 10 - 20 mm, and the outside is wrapped with a heat preservation rubber layer (16) to ensure that heat is not dissipated.

[0007] Inside the furnace body (1), there is a non-magnetic isolation body (3) with a cavity opening downward. The lower part of the non-magnetic isolation body (3) and the furnace body (1) are sealed to form a container filled with the liquid to be heated. There is a gap between the non-magnetic isolation body (3) and the furnace body (1), and the non-magnetic isolation body (3) and the sealing ring (13) are fixed and sealed with a sealing flange (14) under the furnace body.

[0008] Inside the cavity of the non-magnetic isolation body (3), there is a coil support (4). The coil support (4) is fixed at the lower part of the cavity of the non-magnetic isolation body (3). The coil support (4) and the coil (5) on the coil support are located inside the cavity of the non-magnetic isolation body (3). The coil connector (6) on the support is exposed outside the furnace body (1) and is connected to the electromagnetic controller.

[0009] The magnetic lines of force generated by the electromagnetic coil (5) on the coil support act on the furnace body (1), causing the furnace body (1) to heat up. The entire inner side area of the heated furnace body (1) is in contact with the liquid and exchanges heat, making the temperature of the heated liquid fully uniform and shortening the heating time. The high-frequency electromagnetic field generated by the coil is entirely located inside the furnace body. The furnace body (1) acts as a metal shell to shield the entire electromagnetic field, ensuring no electromagnetic field leakage and electromagnetic interference. Moreover, the heat generated by the coil (5) is also entirely absorbed by the liquid inside the furnace body (1) because the coil (5) is located inside the furnace body (1), without heat loss.

[0010] On the furnace body (1), there is a liquid level sensor (7) inside the furnace, which is used to monitor the amount of liquid inside the furnace to ensure no dry burning. The liquid level sensor inside the furnace is connected to the electromagnetic controller.

[0011] On the furnace body (1), there is a liquid temperature sensor (8) inside the furnace, which is used to monitor the temperature of the liquid inside the furnace. The liquid temperature sensor inside the furnace is connected to the electromagnetic controller.

[0012] On the furnace body (1), there is a furnace body temperature controller, which is used to control the maximum temperature of the furnace body (1) and is connected to the electromagnetic controller.

[0013] On the furnace body (1), there are a liquid inlet 1 (12) and a liquid inlet 2 (11), and a liquid outlet (10), which are the circulation inlets and outlets for heating the liquid.

[0014] Compared with the prior art, the present invention can maximize the thermal conversion efficiency, eliminate the leakage of electricity and magnetic fields, be safe and efficient, have a reasonable structure, be convenient for use and maintenance, have a simple production process, and have an attractive appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is the structural diagram of the heating device of the present invention. The furnace body is a cylinder. The names of each part are as follows: 1 - furnace body, 2 - heat insulation layer, 3 - non - magnetic isolator, 4 - coil support, 5 - coil, 6 - coil joint, 7 - liquid level sensor in the furnace, 8 - liquid temperature sensor in the furnace, 9 - furnace body temperature controller, 10 - liquid outlet, 11 - liquid inlet 2, 12 - liquid inlet 1, 13 - sealing ring, 14 - sealing flange, 15 - coil support fixing ring, 16 - heat insulation rubber layer. Figure 2 It is the schematic diagram of the sealing flange and the sealing ring at the bottom of the furnace body. The two points in the middle are the coil joints, and the outer circle is the coil support fixing ring.

Claims

1. An electromagnetic heating device, comprising a furnace body (1), a heat insulation layer (2), a non-magnetic isolation body (3), a coil support (4), a coil (5), two coil connectors (6) on the coil support (4), a liquid level sensor (7) inside the furnace, a liquid temperature sensor (8) inside the furnace, a furnace body temperature controller (9), a liquid outlet (10) on the furnace body (1), a liquid inlet 1 (12) on the furnace body (1), a liquid inlet 2 (11) on the furnace body (1), a sealing ring (13), a sealing flange (14), a coil support fixing ring (15), a heat insulation rubber layer (16); the furnace body (1) is a metal body that is easily magnetically conductive, and a heat-insulating heat insulation layer (2) is wrapped around its outer surface; there is a non-magnetic isolation body (3) inside the furnace body (1); the non-magnetic isolation body (3) is a body with an internal cavity and an opening at the lower part of the cavity; the non-magnetic isolation body (3) and the furnace body (1) form a liquid container, and the two are combined with a sealing ring (13) at the bottom of the furnace body (1) and sealed and fixed with a sealing flange (14) at the bottom of the furnace body (1); there is a liquid outlet (10) in the middle of the upper part of the furnace body (1), and there are a liquid inlet 1 (12) and a liquid inlet 2 (11) on both sides of the lower part of the furnace body (1); the liquid inlet and outlet are connected to the peripheral pipeline to form a circulating heating system; there is a coil support (4) in the cavity of the non-magnetic isolation body (3), and it is fixed to the lower part of the cavity of the non-magnetic isolation body (3) with a coil support fixing ring (15); the coil support (4) is wound with a coil (5) for electromagnetic heating; two coil connectors (6) of the coil (5) are exposed below the furnace body (1) at the lower part of the coil support (4) and are connected to an electromagnetic generator.

2. An electromagnetic heating device according to claim 1, characterized in that: The inner layer of the heat insulation layer (2) uses asbestos and silicate heat insulation materials, and the outer layer is wrapped with a heat insulation rubber layer (16); the thickness of the heat insulation layer (2) is 10 - 20 mm.

3. An electromagnetic heating device according to claim 1, characterized in that: There is a liquid level sensor (7) inside the furnace on the upper part of the furnace body (1) connected to the electromagnetic generator, which is used to detect whether there is a certain volume of liquid in the furnace to prevent dry burning; there is also a liquid temperature sensor (8) inside the furnace on the upper part of the furnace body (1) connected to the electromagnetic generator, which is used to detect the liquid temperature in the furnace; there is also a furnace body temperature controller (9) on the upper part of the furnace body (1) connected to the electromagnetic generator, which is used to control the temperature of the furnace body.

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