CN2076372U

CN2076372U - Energy-saving main-frequency electromagnetic pot

Info

Publication number: CN2076372U
Application number: CN 90203529
Authority: CN
Inventors: 万慧保
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-03-24
Filing date: 1990-03-24
Publication date: 1991-05-08

Abstract

The utility model relates to an energy-saving main-frequency electromagnetic pot. The upper part of the utility model is provided with a pot body component, and the lower part of the utility model is provided with an induction heating component. The utility model is provided with an asbest heat insulating plywood, a magnetic path pressing plate and a phase splitting balance circuit. A magnetic path pressing plate, a magnetic path iron core, the asbest heat insulating plywood and a pot body are fastened together by fastening pieces to form an integral forming structure. The utility model has the advantages of simple structure, reliable performance, long service life, low cost and good energy saving effect. The utility model fundamentally solves the defect that the pot body has vibration and big noise, and the power factor of an inductive load circuit is increased.

Description

Energy-saving main-frequency electromagnetic pot

The utility model relates to the cooking device by the electromagnetic field inducing heating, relates in particular to a kind of energy-conservation power frequency electromagnetism pot.

Electromagnetic stove is the novel household kitchen utensil that utilizes the eddy-current heating method cooking food of electromagnetic induction.It mainly is made up of load coil, hearth plate and pot.Power frequency by its load coil of flowing through is divided into high and low frequency electromagnetic stove two big classes.The high-frequency electromagnetic kitchen range is to use the above high-frequency current of 20 KHz to pass through load coil, and the low frequency electromagnetic kitchen range is to use 50 or 60 hertz power current to pass through load coil, therefore, also be referred to as the power frequency electromagnetic stove, its advantage is simple in structure, dependable performance, long service life, cost is lower, because main materials used is iron core and copper cash, so that volume and weight is bigger, especially also has vibration of pot body and the big defective of noise.

The purpose of this utility model is at a kind of pot and stove of deficiency proposition of existing power frequency electromagnetic stove incorporate, and can reduce the energy-conservation power frequency electromagnetism pot of electromagnetic vibration noise significantly.

The utility model is identical with existing electromagnetic stove on principle, all is to utilize to produce eddy current in the bottom of a pan, sends joule's heat energy, and directly conducts the heat cooking food.But structurally the utility model and existing electromagnetic stove have certain difference.

The utility model is the pot and stove integral structure, is divided into two large divisions up and down.Top is pan body part, makes two kinds of forms according to instructions for use usually, and a kind of is high pressure electromagnetism steamer, and promptly pressure cooker body 1, and another kind is an Electromagnetic round-bottomed cooking pan, and promptly the frying pan body 2.Be provided with asbestos insulation insulation laminate 3 being close to the bottom of pot body outer surface, it is equivalent to the hearth plate of general electromagnetic stove.The bottom is the induction heating parts, is made up of principal phase heating iron core 4, principal phase heater coil 5, shift capacitor 6, phase-splitting balanced core 7, phase-splitting balance coil 8, magnetic circuit pressing plate 9, securing member 10, thermostat 11, temperature detect switch (TDS) 12, supply socket 13, shell 14, indicator light 15 and fuse 16.The bottom of a pan of pressure cooker body 1 or frying pan body 2 can be boiling steel 08F by electrical pure iron sheet material processing and fabricating, also can be the A3 cold-reduced sheet, and frying pan body 2 can also adopt alloy cast iron cast form.The bottom of a pan thickness is the 3-4 millimeter, is the part of pot body, is again induction heating magnetic circuit and the part that divides the magnetic circuit that balances each other.

For the power factor that reduces electromagnetic vibration noise significantly and improve perceptual load circuit with saves energy, be provided with the phase-splitting balancing circuitry that is composed in series by shift capacitor 6 and phase-splitting balance coil 8 in the induction heating parts of the present utility model, its series impedance is Z _CL, the capacitive reactance X of shift capacitor 6 _CBe designed to induction reactance X greater than phase-splitting balance coil 8 _L, generally require X _C=2X _L, the phase-splitting balancing circuitry is connected across principal phase heater coil 5 two ends, the impedance Z of principal phase heater coil 5 _LBe designed to equal the impedance Z of phase-splitting balancing circuitry _CC, i.e. Z _L=Z _CL, and require the magnetomotive force of phase-splitting balancing circuitry to equal the magnetomotive force of principal phase circuit.The number of turn of setting principal phase heater coil 5 is N1, wherein flows through principal phase operating current I1, and the number of turn of phase-splitting balance coil 8 is N2, wherein flows through phase-splitting operating current I2, i.e. magnetomotive force I1N1=I2N2.Magnetic Circuit Design becomes principal phase heating iron core 4 and phase-splitting balanced core 7 to be U core formula iron core, and every phase all has 2 groups of iron cores, lines up in-line, adopts the die-cut back of D43 or H10 cold-reduced silicon sheet orientation lamination to make.And the mutual square crossing across of 2 groups of iron cores of principal phase and 2 groups of iron cores of phase-splitting is arranged, place the induction heating component upper ends, for reducing leakage field, principal phase heater coil 5 and phase-splitting balance coil 8 be also corresponding respectively makes 2 windings, respectively be enclosed within on the outer stem stem of 2 groups of iron cores, and by instantaneous polarity just → bear → bear → just be connected in series, also can be negative → just → just → negative being connected in series, but must make principal phase magnetic field consistent with the instantaneous polarity in phase-splitting magnetic field by instantaneous polarity.Be glued with magnetic circuit pressing plate 9 below the magnetic circuit iron core, it is actually a magnetic circuit balance iron, can be with 15 ^#Casting pig is made, and also can make of the A3 medium plate.Its weight should be greater than 2 times of magnetic circuit iron core weight summation, and thickness is 20 millimeter.Employing securing member 10 for example stock screw tightens together magnetic circuit pressing plate 9, principal phase heating iron core 4, phase-splitting balanced core 7, asbestos insulation insulation laminate 3 and a pot body 1 or 2, form integral structure, require faying face to coincide as much as possible, to suppress industrial frequency noise effectively.Shift capacitor 6 places below of induction heating parts.Thermostat 11 places in the aperture that center, the bottom of a pan presets, and temperature detect switch (TDS) 12, supply socket 13, indicator light 15 and fuse 16 all are positioned on the shell 14.Temperature detect switch (TDS) 12 has two working positions, when being in low-temperature working position or heat insulation work position, and thermostat 11 places in circuit, made it heat insulation function, holding temperature is about 60 ℃ or 105 ℃, when being in the hot operation position, and inoperative, working temperature is about 200 ℃ by short circuit for thermostat 11.Shell 14 can be made of antimagnetic stainless sheet steel.The best rated power of the utility model is 600-800 watt, is lower than 600 watts, and deficiency in economic performance is higher than 800 watts, and noise obviously rises.

The utlity model has the advantage of general power frequency electromagnetic stove, as simple in structure, dependable performance, long service life and cost are lower, also solved vibration of pot body and the big defective of noise substantially,, can improve the power factor of perceptual load circuit owing to be provided with the phase-splitting balancing circuitry, the basic homophase of the resultant current of principal phase operating current and phase-splitting operating current and supply voltage has higher energy-saving effect.

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model circuit interconnect pattern.

22 centimetres of energy-conservation power frequency electromagnetism pressure cookers of embodiment diameter of phi

Using power supply is 220 volts, 50 hertz, and rated power is 600 watts, and pot body material is the A3 cold-reduced sheet, pot body thickness is 1.5 millimeters, the bottom of a pan thickness is 3 millimeters, and pot height degree and 22 centimetres of aluminum pressure cookers of other parameter and commercially available diameter of phi are identical, and handle through chromium plating on the surface.Asbestos insulation insulation laminate 3 is 1 millimeters thick compressed asbestos sheet, and specification is 200 millimeters of 1 * Φ.The stem stem of principal phase heating iron core 4 and phase-splitting balanced core 7 is of a size of 15 * 15 millimeters, and is high 67 millimeters, adopts 0.35 millimeters thick H10 cold-reduced silicon sheet orientation die-cut, the edge flash removed, and lamination is made then.The number of turn N1 of principal phase heater coil 5 and phase-splitting balance coil 8, N2 are 500 circles, adopt 1.37 millimeters QZ2 types of diameter of phi enamelled wire to turn to 4 absolute coils, and every winding inductance quantity is about 63.4 milihenries.Shift capacitor 6 is 40 microfarads/400 volt electric capacity.Thermostat 11 adopts JW3 type temperature relay, 60 ℃ of the temperature of adjusting.Temperature detect switch (TDS) 12 adopts 250 volts/5 peace one pole toggle switchs.Shell 14 adopts the antimagnetic stainless sheet steel of 0.4 millimeters thick to make.Indicator light 15 is 220 volts of miniature indicator lights.Fuse 16 is 3 peace cartridge fuses.

The present embodiment class of insulation is the H level, and hot insulation resistance is greater than 0.5 megaohm.Total weight is slightly less than 10 kilograms, actual utilization efficiency of heat energy is not less than 80%, actual utilization efficiency of heat energy near the high-frequency electromagnetic kitchen range, but 1000 watts of high-frequency electromagnetic kitchen ranges of energy consuming ratio low about 25%, cost only be its 50%, useful life and reliability are all considerably beyond the high-frequency electromagnetic kitchen range, and be only superior not as good as the high-frequency electromagnetic kitchen range aspect noise, but can be to the environment structure noise pollution.

Claims

1, a kind of energy-conservation power frequency electromagnetism pot, top is pan body part, the bottom is the induction heating parts, comprise principal phase heating iron core 4, principal phase heater coil 5, shift capacitor 6, phase-splitting balanced core 7, phase-splitting balance coil 8, securing member 10 etc., it is characterized in that the bottom of pot body outer surface is provided with asbestos insulation insulation laminate 3, the series impedance Z of the phase-splitting balancing circuitry that is composed in series by shift capacitor 6 and phase-splitting balance coil 8 being close to _CLEqual the impedance Z of principal phase heater coil 5 _L, i.e. Z _CL=Z _L, and the capacitive reactance X of shift capacitor 6 _CInduction reactance X greater than phase-splitting balance coil 8 _L, be generally X _C=2X _LPrincipal phase heating iron core 4 and phase-splitting balanced core 7 are U core formula iron core, and every phase all has 2 groups of iron cores, line up in-line, and the mutual square crossing across of 2 groups of iron cores of principal phase and 2 groups of iron cores of phase-splitting is arranged, place the induction heating component upper ends, principal phase heater coil 5 and phase-splitting balance coil 8 be also corresponding respectively makes 2 windings, respectively be enclosed within on the outer stem stem of 2 groups of iron cores, make principal phase magnetic field consistent with the instantaneous polarity in phase-splitting magnetic field, below the magnetic circuit iron core, be glued with magnetic circuit pressing plate 9, adopt securing member 10 magnetic circuit pressing plate 9, principal phase heating iron core 4, phase-splitting balanced core 7, asbestos insulation insulation laminate 3 and pan body part tighten together, and form integral structure.

2, energy-conservation power frequency electromagnetic stove as claimed in claim 1 is characterized in that magnetic circuit pressing plate 9 can be with 15 ^#Casting pig is made, and also can make of the A3 medium plate, and its weight should be greater than 2 times of magnetic circuit iron core weight summation.