Integrated permanent magnet eddy current heater

Abstract

The integrated permanent magnet eddy current heater relates to a permanent magnet heater. The permanent magnet motor stator assembly (5) interacts with the rotor permanent magnet (4) and the yoke (3) to generate a rotating magnetic field to make the outer rotor permanent magnet motor rotate. , as the driving power of the water heater; the permanent magnet of the water heater (7) and the permanent magnet of the permanent magnet motor rotor (4) share a yoke (3), and the N and S poles are regularly arranged along the inner wall of the shared yoke (3) for a circle of neodymium iron The boron water heater permanent magnet (7); the rotation of the common yoke (3) drives the water heater permanent magnet (7) to rotate; the water heater permanent magnet (7) is surrounded by a water heater body (8) composed of a spiral copper tube or stainless steel tube, and the inside of the tube is There is medium water; under the action of the rotating magnetic field, the copper tube generates eddy current to generate heat, and heats the water in the tube; the flow direction of the hot water is the outlet of the water heater (15). The invention completely and fully converts the input energy into heat energy, that is, converts the loss in the traditional sense of the rotating electrical machine into effective heat energy.

Description

technical field [0001] The invention relates to a permanent magnet heater, in particular to an integrated permanent magnet eddy current heater. Background technique [0002] As the country strengthens environmental pollution control, the government attaches great importance to the coal-to-electricity policy, and electric heating has been put on the agenda. At present, electric heating usually has the following types: [0003] 1. The heating of the electric heating tube is to place Ni, Cr and other alloy wires in the metal tube, and fill it with MgO powder for insulation, positioning and heat transfer. The disadvantage is that after a period of operation, the surface of the metal tube becomes fouled, the heat transfer efficiency gradually decreases, or the electric heating tube breaks down and is damaged. In addition, the power of the tubular element is fixed, and the increase of the capacity of the heater must be realized by increasing the number of tubular heating element...

AI Technical Summary

Problems solved by technology

Induction heating avoids the easy breakdown and damage of electric heating tubes. Since there are no expired parts, maintenance is simple, but the manufacturing process is complicated. The power supply must be equipped with a frequency conversion cabinet. Once damaged, maintenance is difficult

[0006] 3. The rotating electromagnetic induction heating technology is an electrothermal technology that uses the rotating electromagnetic effect to heat; it has complete isolation of water and electricity, non-contact heating, rapid heating speed, easy control, etc., but the current application area is narrow, the main reason is structural design and Unreasonable application cost leads to

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