Large electromagnetic drying and heating device

Abstract

A large electromagnetic drying and heating device comprises a metal pipe and a plurality of sections of electromagnetic heating coils wound on the metal pipe, the metal pipe is supported by a plurality of vertical supporting plates at intervals, and the upper end of each supporting plate is provided with an arc-shaped edge making contact with the outer side wall of the metal pipe, so that the metal pipe is supported on the ground through the supporting plates. The lower end of each supporting plate is fixed to a horizontal bottom frame. The electromagnetic heating efficiency is higher, the metal pipe is supported by the vertical supporting plates at intervals, the arc-shaped edge is arranged at the upper end of each supporting plate and makes contact with the outer side wall of the metal pipe, so that the metal pipe is supported on the ground through the supporting plates, the metal pipe is firmly fixed, the metal pipe is erected, and the heating efficiency is improved. Meanwhile, due to the fact that the metal pipe generates heat and does not have a conduction process, the heat conversion rate of the metal pipe is particularly high and can reach 100% at most, and electric energy can be better utilized.

Description

Technical Field

[0001] The utility model relates to a heating device, in particular to a large-scale electromagnetic drying and heating device. Background Art

[0002] Enterprises currently mainly use gas and electricity as energy sources for product drying and community heating. Enterprises mainly use traditional resistance heating to generate heat energy, which is then sent to the products or equipment that need to be heated through fans. Although resistance heating is cleaner and electricity can come from wind energy, solar energy, etc., it has a low thermal efficiency, easily leads to heat loss, and is difficult to control. Utility Model Content

[0003] In order to solve the above problems, the purpose of the utility model is to provide a large electromagnetic drying and heating device.

[0004] To achieve the above-mentioned purpose, the technical solution of the utility model is: a large-scale electromagnetic drying and heating device, including a metal tube and a plurality of electromagnetic heating coils wound on the metal tube, the metal tube is supported by a plurality of vertical support plates at intervals, and the upper end of each support plate is provided with an arc-shaped edge in contact with the outer wall of the metal tube, so that the metal tube is supported above the ground through the support plate, and the lower end of each support plate is respectively fixed on a horizontal bottom frame.

[0005] Furthermore, a plurality of arch frames arranged at intervals are provided on the bottom frame, the two ends of the arch frames are respectively fixedly connected to the two sides of the bottom frame, the edges of adjacent arch frames are covered with arched protective covers, and the outer side of the bottom frame at each end is covered with a cover plate.

[0006] Furthermore, each metal pipe is composed of multiple pipe sections fixedly connected by flanges.

[0007] Furthermore, there are two metal tubes, which are arranged symmetrically on both sides.

[0008] Furthermore, a fan is fixed to one end corresponding to the metal tube, and an air outlet of the fan is connected to the metal tube.

[0009] Furthermore, a plurality of legs are arranged at the bottom of the bottom frame.

[0010] Further, the bottom of the fan supports the fan bracket.

[0011] Furthermore, the outer side walls at both ends of each protective cover are respectively provided with a plurality of reinforcing protrusion structures protruding outwards.

[0012] Furthermore, it also includes a variable frequency power output unit and a variable frequency control unit for controlling the variable frequency power output unit, and the variable frequency control unit has a human-computer interaction interface.

[0013] Through the above arrangement, the thermal efficiency of electromagnetic heating adopted by the utility model is higher, and the metal pipe is supported by multiple vertical support plates at intervals, and the upper end of each support plate is provided with an arc-shaped edge in contact with the outer wall of the metal pipe, so that the metal pipe is supported above the ground through the support plate, which is not only firmly fixed, but also serves as a passage for the overhead metal pipe, which can greatly reduce heat transfer loss. At the same time, since the metal pipe generates heat by itself and there is no conduction process, its heat conversion rate is particularly high, which can reach up to 100%, which is more convenient for rapid control and better utilization of electrical energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is now further described with reference to the accompanying drawings.

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the utility model. DETAILED DESCRIPTION

[0017] like Figure 1-2 As shown, a large electromagnetic drying and heating device includes a metal tube 1 and a multi-segment electromagnetic heating coil 2 wound on the metal tube 1. There are two metal tubes 1 and they are arranged symmetrically on the left and right. The metal tubes 1 are supported by multiple vertical support plates 3 at intervals, and the upper end of each support plate 3 is provided with an arc-shaped edge in contact with the outer wall of the metal tube 1, so that the metal tube 1 is supported above the ground through the support plate 3. The lower end of each support plate 3 is respectively fixed on a horizontal bottom frame 4, and a plurality of legs 10 are provided at the bottom of the bottom frame 4.

[0018] A plurality of arch frames 5 are arranged at intervals on the bottom frame 4, and two ends of the arch frames 5 are fixedly connected to two sides of the bottom frame 4 respectively. The edges of adjacent arch frames 5 are covered with arched protective covers 6, and the outer walls at both ends of each protective cover 6 are respectively provided with a plurality of reinforcing protrusion structures 12 protruding outward, and the outer side of the bottom frame 4 at each end is covered with a cover plate 7.

[0019] Each metal tube 1 is composed of multiple tube sections fixedly connected by flanges 8, and the electromagnetic heating coil 2 is wrapped with thermal insulation materials. A fan 9 is fixed to the end corresponding to the metal tube 1, and the air outlet of the fan 9 is connected to the metal tube 1. The bottom of the fan 9 supports a fan bracket 11.

[0020] In order to facilitate the control of the heating of each section of the electromagnetic heating coil 2, it also includes a variable frequency power output unit 13 and a variable frequency control unit 14 for controlling the variable frequency power output unit 13. The variable frequency control unit 14 has a human-computer interaction interface 15. Controlling the variable frequency power output unit 13, the variable frequency control unit 14 and the human-computer interaction interface 15 is existing technology, as long as it can achieve the control of the heating of the electromagnetic heating coil 2.

[0021] Working principle of this utility model:

[0022] The functional principle of the utility model is mainly based on the principle of electromagnetic induction. The frequency conversion control unit 14 first converges the input alternating current, that is, 380V50HZ three-phase alternating current, into direct current. After filtering, the direct current is inverted into high-frequency high-voltage electricity using components such as 1GBT or thyristor. These high-frequency currents flowing through the coil will generate a high-speed changing alternating magnetic field. When the iron-containing metal tube 1 is placed in this alternating magnetic field, the container generates an alternating current, that is, eddy current. The eddy current causes the carriers of the container to move irregularly at high speed, collide with each other, and generate heat energy during the friction process, thereby heating the metal tube. 1, of course, copper, aluminum and other metals can also be used. Compared with the traditional resistance heating method, the thermal efficiency of the electromagnetic heating adopted by the utility model is higher, and the metal pipe 1 is supported by multiple vertical support plates 3 at intervals, and the upper end of each support plate 3 is provided with an arc-shaped edge in contact with the outer wall of the metal pipe 1, so that the metal pipe 1 is supported on the ground through the support plate 3, which is not only firmly fixed, but also plays a role in the passage of the overhead metal pipe 1, which can greatly reduce the heat transfer loss. At the same time, since the metal pipe 1 generates heat by itself and there is no conduction process, its heat conversion rate is particularly high, which can reach up to 100%, so as to make better use of electrical energy.

[0023] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A large electromagnetic drying and heating device, comprising a metal tube (1) and a multi-section electromagnetic heating coil (2) wound around the metal tube (1), characterized in that: The metal tube (1) is supported by a plurality of vertical support plates (3) at intervals, and the upper end of each support plate (3) is provided with an arc-shaped edge in contact with the outer wall of the metal tube (1), so that the metal tube (1) is supported on the ground through the support plates (3), and the lower end of each support plate (3) is fixed to a horizontal bottom frame (4).

2. A large electromagnetic drying and heating device as claimed in claim 1, characterized in that: A plurality of arch frames (5) arranged at intervals are arranged on the bottom frame (4), the two ends of the arch frames (5) are respectively fixedly connected to the two sides of the bottom frame (4), the edges of adjacent arch frames (5) are covered with arched protective covers (6), and the outer sides of the bottom frames (4) at each end are covered with cover plates (7).

3. A large electromagnetic drying and heating device as claimed in claim 1, characterized in that: Each metal tube (1) is composed of a plurality of tube sections fixedly connected via flanges (8), and a thermal insulation material is wound around the outer periphery of the electromagnetic heating coil (2).

4. A large electromagnetic drying and heating device as claimed in claim 1, characterized in that: There are two metal tubes (1) in total, which are arranged symmetrically on the left and right.

5. A large electromagnetic drying and heating device as claimed in claim 1, characterized in that: A fan (9) is fixed to one end corresponding to the metal tube (1), and an air outlet of the fan (9) is in communication with the metal tube (1).

6. A large electromagnetic drying and heating device as claimed in claim 1, characterized in that: A plurality of supporting legs (10) are arranged at the bottom of the bottom frame (4).

7. A large electromagnetic drying and heating device as claimed in claim 5, characterized in that: The bottom of the fan (9) supports a fan bracket (11).

8. A large electromagnetic drying and heating device as claimed in claim 1, characterized in that: The outer side walls at both ends of each protective cover (6) are respectively provided with a plurality of outwardly protruding reinforcing protrusion structures (12).

9. A large electromagnetic drying and heating device as claimed in claim 1, characterized in that: It also includes a variable frequency power output unit (13) and a variable frequency control unit (14) for controlling the variable frequency power output unit (13); the variable frequency control unit (14) has a human-machine interaction interface (15).

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