Medium-frequency induction furnace
An induction furnace and intermediate frequency technology, applied in the field of induction cooker, can solve the problems of increasing the use cost of intermediate frequency furnace, inconvenient use, complex structure, etc., and achieve the effects of avoiding heat loss, reducing use cost, and saving water cooling system
Inactive Publication Date: 2014-03-26
叶道平
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Problems solved by technology
[0003] Most of the induction coils of intermediate frequency furnaces commonly used at present are made of rectangular or round hollow copper tubes. In order to prevent overheating of the induction coils, cooling water is usually passed through the hollow copper tubes, that is, a cooling system is required to cool the induction coils. This cooling system not only has a complex structure, but also increases the cost of using the intermediate frequency furnace; moreover, it causes a lot of heat loss and consumes a lot of power
Moreover, in the existing intermediate frequency furnace, after the power is cut off, the molten metal in the crucible will cool down rapidly, causing inconvenience in use
Method used
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[0018] The intermediate frequency induction furnace in this example is as figure 1 and figure 2 As shown, it includes a graphite crucible 1 , an induction coil 2 , a thermal insulation layer 3 , a junction box 4 and a frame 5 . The induction coil 2 is wound by a solid material made of a high-temperature titanium alloy material, and the induction coil 2 is spirally wound on the outer surface of the graphite crucible 1; in addition, the induction coil can also be prepared by a high-temperature nickel-chromium alloy. The thermal insulation layer 3 is made of silicic acid fiber material, and the induction coil 2 and the graphite crucible 1 are wrapped in it. The graphite crucible 1 , the induction coil 2 and the thermal insulation layer 3 are all fixed in the frame body 5 . The junction box 4 is arranged on one side of the frame body 5 , the induction coil 2 communicates with the power supply through the junction box 4 , and the junction box 4 can also control the current in th...
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The invention discloses a medium-frequency induction furnace which comprises a graphite crucible and an induction coil spirally wound around the outer surface of the graphite crucible. The induction coil is a high-temperature resistant solid pipe, and at least one heat preservation and thermal insulation layer is further arranged on the outer surface of the induction coil. According to the medium-frequency induction furnace, the high-temperature resistant solid pipe is wound to be the induction coil, water cooling is not needed, water is saved and heat loss caused by water cooling is also avoided, and the heat energy utilization rate is improved; through the design of the heat preservation and thermal insulation layer, heat loss is further reduced so that the temperature in the graphite crucible can still keep warm for 2-3 hours after the graphite crucible is powered off, and the usage is convenient. In addition, the water cooling is not needed, a water cooling system is omitted, and the use cost of the medium-frequency induction furnace is reduced.
Description
technical field [0001] The present application relates to the field of electromagnetic cookers, in particular to an intermediate frequency induction cooker. Background technique [0002] The intermediate frequency furnace, that is, the intermediate frequency induction furnace, is a furnace that uses the principle of electromagnetic induction to heat and melt metals. The working principle of the intermediate frequency furnace is to use the power supply device to rectify the three-phase power frequency alternating current into direct current, supply the intermediate frequency alternating current flowing through the capacitor and the induction coil, generate high-density magnetic force lines in the induction coil, and the magnetic force lines cut the crucible The metal material contained in the container generates a large eddy current in the metal material, thereby heating the metal and melting the metal. [0003] Most of the induction coils of intermediate frequency furnaces ...
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IPC IPC(8): F27B14/06F27B14/14H05B6/36
Inventor 叶道平
Owner 叶道平