CN201248156Y

CN201248156Y - Electromagnetic induction heater with magnetic path closed cartridge type structure

Info

Publication number: CN201248156Y
Application number: CNU2007200615514U
Authority: CN
Inventors: 周华
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-12-18
Filing date: 2007-12-18
Publication date: 2009-05-27
Anticipated expiration: 2017-12-18

Abstract

A heating element which heats by electromagnetic induction adopts a closed magnetic circuit of a cylinder-shaped structure to realize high-efficient electricity-heat conversion and also adopts an insulating and solidifying coil way to realize water-electricity separation. The heating element wraps the insulating and solidifying cylinder-shaped coil through inner and outer layers of ferromagnetic bodies which have different diameters as well as an annular upper cover and an annular lower cover to form the closed magnetic circuit. When the heating element works, the inner and the outer layers of the ferromagnetic bodies as well as the upper cover and the lower cover generate vortex heat, and the electromagnetic radiation is shielded by the ferromagnetic bodies.

Description

The electromagnetic induction heater of the closed cylindrical structure of magnetic circuit

Technical field

The utility model relates to a kind of heater of electromagnetic induction heating, adopts the closed magnetic circuit of cylindrical structure to realize electric heating conversion efficiently, adopts insulation to solidify the coil measure again, realizes electricity separation.

Background technology

Electromagnetic induction heating is in industry used and is all adopted coil one side or coil inner chamber dress ferromagnet, and the inc structure of ferromagnetic exothermic material magnetic circuit make not fully conversion of electric heating, and electromagnetic radiation is higher.

Summary of the invention

Not high in order to solve present electromagnetic heating body electric conversion efficiency, and the bigger present situation of electromagnetic exposure, the utility model provides the electromagnetic induction heater of the closed cylindrical structure of a kind of magnetic circuit, alternating current during this heating physical efficiency in the coil fully is converted to eddy current heat, and stops the electromagenetic wave radiation that causes because of the inc situation of magnetic circuit.

The technical scheme that its technical problem that solves the utility model adopts is: adopt the cartridge type insulation to solidify induction coil, thin-wall steel tube is placed in the chamber in coil, thin-wall steel tube is also placed in the coil outside, two steel pipes add ring-like thin steel and make upper and lower covers, form closed magnetic circuit, total is dipped in the water body that plastic casing stores up, and its effect is that all ferromagnet eddy current heat fully make the water heating, and shielding electromagnetic wave makes it to cause radiation leakage.

The beneficial effects of the utility model are to have realized on principle that electric energy fully is converted in the eddy current heat electromagnetic radiation shielding.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is front view of the present utility model and I-I cutaway view.

Fig. 2 is vertical view of the present utility model and H-H cutaway view.

1. loam cake ferromagnets among the figure, 2. urceolus ferromagnet, 3. insulation curing coil, 4. inner core ferromagnet, 5. plastic casing, 6. water body, 7. lower cover ferromagnet.

Embodiment

Adopt the cartridge type insulation to solidify induction coil (3), thin-walled ferromagnet tube (4) is placed in the chamber in coil, thin-walled ferromagnet tube (2) is also placed in the coil outside, two pipes add ring-like thin ferromagnet and do upper and lower covers (1) and (7), form closed magnetic circuit, total is dipped in the water body (6) that plastic casing (5) stored up, its effect is that all ferromagnet eddy current heat fully make the water heating, and shielding electromagnetic wave, make it to cause radiation leakage, and in actual engineering, (2) and (4) can make the square tube except that cylinder, rectangular cylinder, triangle tube and irregularly close-shapedly can both reach above-mentioned effect, upper and lower covers mate according to barrel shape, reach the purpose of magnetic circuit closure.

Claims

1, the electromagnetic induction heater of the closed cylindrical structure of a kind of magnetic circuit, adopt two cartridge type ferromagnets of band upper and lower covers to wrap up the structure that coil is solidified in middle cartridge types insulation, it is characterized in that: ferromagnetic heater of cartridge type and upper and lower covers physical connection form the unitary closed magnetic circuit, coil is solidified in the insulation of intermediate seal parcel tubular, cartridge type ferromagnet shape of cross section can be circle, side, rectangle, triangle, polygon.