CN202719743U - Electromagnetic water heater - Google Patents

Abstract

Disclosed is an electromagnetic water heater. The electromagnetic water heater comprises a shell body which contains each component. The shell body contains at least a water heating plate, inductance coils which are corresponding to the water heating plate, a water pipe and a circuit device. The water pipe is connected with the water heating plate. The circuit device is connected with the inductance coil. The electromagnetic water heater is characterized in that the water heating plate is provided with an upper water cover and a lower water cover, a heating plate is arranged between the upper water plate and the lower water plate, a water groove/ grooves is/ are arranged on the upper water cover and / or the lower water cover, the upper water cover and the lower water cover are made of non-metallic materials and the heating plate is made of magnetic metal materials. The non-metallic materials adopted by the water heating plate can not only meet the heat preservation performance, but also improve structural strength.

Description

Electromagnet water heater

Technical field

The utility model relates to water heater, particularly a kind of electromagnet water heater.

Background technology

Electromagnet water heater has multinomial utility model patent, majority be induction coil around the water pipe setting, the very little three dimensions so water pipe and induction coil coexist, water is easy to touch circuit and produces the unsafe factor of electricity consumption during pipe leakage.The heater of Chinese patent 200410013500.5 is monolaterally to contact with water, and the heat that the another side of heater produces can be radiated induction coil, increases the temperature rise of coil and reduces the thermal efficiency.Chinese patent 200810123605.4 water receptacles are unfavorable for insulation for bearing when hydraulic pressure uses metal material, need to strengthen wall thickness when using nonmetallic materials or increase the other reasons such as rib and make coil and the increase of calandria spacing, the magnetic resistance of magnetic circuit is increased, be unfavorable for the electromagnetic conversion of high frequency.Because not to the water flow guiding, the heat exchange of heater and water is unordered carrying out, the water temperature of delivery port is not the highest water temperature in the container, is unfavorable for the output of energy in addition.

General water heater power is larger, electromagnetic stove through market for many years operation comparatively ripe in technology, device, fittings supply are conveniently, cheaply, but electromagnetic stove power is generally about 2kW, and a plurality of high-power frequency conversion circuit are when working simultaneously, can produce at random after the oscillating circuit waveform stack of mutually not correlating that instantaneous pressure easily damages Sensitive Apparatus (such as the IGBT pipe etc.) and electrical network produced to disturb.

The utility model content

In view of this, the problem that the utility model solves is, a kind of novel electromagnet water heater is provided.

The technical solution of the utility model is: a kind of electromagnet water heater, the housing that comprises accommodating all parts, housing is equipped with the heating water pond at least, induction coil, water pipe, the circuit arrangement corresponding with heating water pond, water pipe is connected with the heating water pond, circuit arrangement is connected with induction coil, this heating water pond has upper water cover and lower water cover, is provided with up and down heating plate between the water cover; Upward water cover and/or lower water cover are provided with tank; Upward water cover and lower water cover are nonmetallic materials, and this heating plate is the magnetic conductive metal material.

This enclosure interior is divided into chamber, water route and circuit chamber, is provided with dividing plate between chamber, water route and the circuit chamber, and the below of chamber, water route is provided with osculum; Comprise heating water pond, water pipe in the chamber, water route, comprise induction coil, circuit arrangement in the circuit chamber.

This dividing plate is metal material, has water pond hole and radiation aluminium hole, water pond hole size and heating water pond and induction coil coupling, and heating water pond and induction coil are located at respectively both sides, water pond hole; Water pipe connects the radiation aluminium water pipe, and circuit arrangement connects the IGBT radiating subassembly, and radiation aluminium water pipe and IGBT radiating subassembly are located at respectively both sides, radiation aluminium hole, and the radiation aluminium water pipe is located at the chamber, water route, and the IGBT radiating subassembly is located at the circuit chamber.

High-pressure-resistant membrane has been sticked on this water pond hole and the radiation aluminium hole.

The dividing plate top is provided with radiating groove, laterally is provided with baffle plate under the radiating groove; The dividing plate below is provided with circuit board storehouse, circuit board storehouse content circuits device.

This dividing plate is nonmetallic materials, has the radiation aluminium hole, heating water pond and induction coil are located at respectively the dividing plate both sides, water pipe connects the radiation aluminium water pipe, circuit arrangement connects the IGBT radiating subassembly, radiation aluminium water pipe and IGBT radiating subassembly are located at respectively both sides, radiation aluminium hole, and the radiation aluminium water pipe is located at the chamber, water route, and the IGBT radiating subassembly is located at the circuit chamber.

Upward water cover lateral surface or bottom are provided with water inlet and delivery port.

Should be provided with some ribs by upper water cover lateral surface.

This heating plate is provided with water-guiding hole and pulling buckle through hole, and upper water cover or lower water cover are provided with the pulling buckle bar, and upper water cover or the lower water cover of not establishing the pulling buckle bar are provided with the pulling buckle hole, and the pulling buckle bar inserts in the pulling buckle hole by the pulling buckle through hole, links to each other by the pulling buckle bar between upper water cover and the lower water cover.

The beneficial effects of the utility model are as follows.

The utility model heating water pond nonmetallic materials had both satisfied heat insulating ability, had improved bulk strength by pulling buckle bar and rib.In the electromagnet water heater of the present utility model in the water route of heating plate current basically constant speed flow, temperature was the highest when water temperature constantly heated the arrival delivery port in flow process, be conducive to the output of energy, also reduce thermal accumlation and make the temperature rising of heating water pond and affect the life-span.A plurality of heating water ponds can be set can and be connect or be connected in series.Be provided with dividing plate between chamber, water route and the circuit chamber; Utilize dividing plate that water and electricity are split and two Room, in case the danger of leak-stopping water.Dividing plate another effect in the first embodiment is the mounting platform of water route and circuit, and the device of various water routes, circuit, accessory are installed in respectively that dividing plate two limits are whole again to be fixed with drain pan, so more are conducive to produce and convenient for maintaining.

Description of drawings

Fig. 1 a is that a kind of embodiment of the utility model heats water pond combining structure schematic diagram.

Fig. 1 b be Fig. 1 a look up the partial perspective structural representation.

Fig. 1 c is the lower water cover structural representation of the heating water pond of Fig. 1 a.

Fig. 1 d be Fig. 1 c overlook the partial perspective structural representation.

Fig. 1 e is the heating board structure schematic diagram of the heating water pond of Fig. 1 a.

Fig. 1 f is the upper water cover structural representation of the heating water pond of Fig. 1 a.

Fig. 1 g be Fig. 1 f look up the partial perspective structural representation.

Fig. 2 a is that the another kind of embodiment of the utility model heats water pond combining structure schematic diagram.

Fig. 2 b be Fig. 2 a overlook the partial perspective structural representation.

Fig. 2 c is the backsight structural representation of Fig. 2 a.

Fig. 2 d is the upper water cover structural representation of the heating water pond of Fig. 2 a.

Fig. 2 e be Fig. 2 d overlook the partial perspective structural representation.

Fig. 2 f is the heating board structure schematic diagram of the heating water pond of Fig. 2 a.

Fig. 2 g is the lower water cover structural representation of the heating water pond of Fig. 2 a.

Fig. 2 h be Fig. 2 g overlook the partial perspective structural representation.

Fig. 3 a is chamber, the utility model the first embodiment water route face perspective structure schematic diagram.

Fig. 3 b is the side perspective schematic diagram of Fig. 3 a.

Fig. 3 c is the utility model the first embodiment circuit chamber face perspective structure schematic diagram.

Fig. 3 d is chamber, the utility model the second embodiment water route face perspective structure schematic diagram.

Fig. 3 e is the circuit chamber perspective structure schematic diagram behind Fig. 3 d dividing plate.

Fig. 3 f is the side perspective schematic diagram of Fig. 3 e.

Fig. 3 g is the utility model the second embodiment hydrographic chart.

Fig. 3 h is the utility model the second embodiment water route chamber draining hole pattern.

Fig. 4 a is the utility model the first embodiment diaphragm structure schematic diagram.

Fig. 4 b is the left TV structure schematic diagram of Fig. 4 a.

Fig. 4 c is the plan structure schematic diagram of Fig. 4 a.

Fig. 5 is the cover configuration structure schematic diagram of the utility model the first embodiment.

Fig. 6 a is the base arrangement perspective diagram of the utility model the first embodiment.

Fig. 6 b is the left TV structure schematic diagram of Fig. 6 a.

Fig. 7 is the utility model list heating plate circuit block diagram.

Fig. 8 is the main circuit diagram of the utility model Electromagnetic Heating.

Fig. 9 is the single heating plate circuit timing diagram of the utility model.

Figure 10 is two heater circuit block diagram of the utility model.

Figure 11 is sequential chart and the source current stack sequential chart of two heating plate circuit of the utility model.

Figure 12 is high-power induction cooker solenoid constitutional diagram.

The specific embodiment

As shown in the figure, a kind of electromagnet water heater of the utility model, the housing 1 that comprises accommodating all parts, housing 1 is equipped with heating water pond 2, induction coil 3, water pipe 4, the circuit arrangement 5 corresponding with heating water pond 2 at least, water pipe 4 with heat water pond 2 and be connected, circuit arrangement 5 is connected with induction coil 3, wherein, shown in Fig. 1 a-1g and Fig. 2 a-2h, heating water pond 2 has upper water cover 21 and lower water cover 22, is provided with up and down heating plate 23 between the water cover; Upward water cover 21 and/or lower water cover 22 are provided with tank 24, and this tank supplies water and flows through, and can the tank pattern be set according to demand, provides two kinds of embodiment commonly used among the figure.Generally shown in above-mentioned accompanying drawing, on the water cover, it is located at, and water cover was on one side inboard up and down, usually goes up the water cover tank darker about it can be arranged on simultaneously for this tank, and lower water cover tank is more shallow; Upward water cover 21 and lower water cover 22 are nonmetallic materials, for example can be engineering plastics or the thermosetting plasticses that adds glass fibre.When upper and lower covers was made of metal material, intensity easily reached requirement, but heat insulating ability is poor, and the utility model nonmetallic materials had both satisfied heat insulating ability, had improved again structural strength.But, owing to being disk-shaped structure, disk center is subjected to easily to produce distortion behind the hydraulic pressure so that water pond and heating board gap are strengthened up and down, the part current via the heat exchanger effectiveness of tank flow effect water, so some pulling buckle bars 25 can be set on the upper and lower covers, do not link to each other by pulling buckle bar 25 between upper water cover 21 and the lower water cover 22, this pulling buckle bar 25 can be arranged at water cover 21, also can be arranged at lower water cover 22, no matter be arranged on that water cover, relative position has pulling buckle hole 26 on another water cover.This heating plate 23 is the magnetic conductive metal material, it can be provided with water-guiding hole 231 and pulling buckle through hole 232, pulling buckle bar 25 inserts in the pulling buckle hole 26 by pulling buckle through hole 232, so that link to each other by the pulling buckle bar between upper water cover and the lower water cover, the distortion that water cover produced because of hydraulic pressure about the pulling buckle bar had been offset, water cover 21 lateral surfaces (such as the embodiment of Fig. 2 a) or bottom (such as the embodiment of Fig. 1 a) are provided with water inlet 211 and delivery port 212 on this, and water inlet advances cold water, delivery port goes out hot water, and is transported to header tank.And, can also be on this water cover and/or lower water cover lateral surface be provided with some ribs 27, with rigidity and the function of guaranteeing water pond.In addition, the lower cover of heating water pond is as far as possible thin, is satisfying under the condition that current pass through, and allows heating water pond and the distance of induction coil shorten as far as possible, reduces the magnetic resistance that heats between water pond and induction coil, is conducive to the conversion efficiency of the high-frequency electromagnetic field energy of induction coil.

In addition, selecting one of them major reason of mode of Electromagnetic Heating water is for Electrical Safety, but water route and circuit are mixed when gathering together, and when there is leakage in the water route, easily makes the circuit humidity that the circuit withstand voltage properties is descended and affects Electrical Safety.

Shown in Fig. 3 a-Fig. 3 c and Fig. 4 a-Fig. 4 c, for a kind of embodiment schematic diagram of the present utility model, be immediately heating water heater, the utility model housing 1 inside is divided into chamber, water route 11 and circuit chamber 12,11 belows, chamber, water route are provided with osculum 120, see also Fig. 6 a and Fig. 3 h; Be provided with dividing plate 7 between chamber, water route 11 and the circuit chamber 12; Utilize dividing plate that water and electricity are split and two Room.Wherein, comprise heating water pond 2, water pipe 4 in the chamber, water route 11, comprise induction coil 3, circuit arrangement 5 in the circuit chamber 12.This dividing plate 7 has water pond hole 71 and radiation aluminium hole 72, water pond hole 71 sizes and heating water pond 2 and induction coil 3 couplings, and heating water pond 2 and induction coil 3 are located at respectively 71 both sides, water pond hole; Water pipe 4 connects radiation aluminium water pipe 41, this radiation aluminium water pipe 41 aluminium stretch forming, tubulose two end machining screw.Circuit arrangement 5 connects IGBT radiating subassembly 8, radiation aluminium water pipe 41 and IGBT radiating subassembly 8 are located at respectively 72 both sides, dividing plate radiation aluminium hole, IGBT pipe 42 is crushed on through the insulation pad on the plane of radiation aluminium and dispels the heat, and water pipe 4 is located at chamber, water route 11, and IGBT radiating subassembly 8 is located at circuit chamber 12.The high-pressure-resistant membrane 73 that has been sticked on this water pond hole 71 and the radiation aluminium hole 72, high-pressure-resistant membrane also play as the electrical equipment buffer action time chamber, water route when leaking to the water buffer action.Certainly, if boiling water dish hole not when dividing plate is made of non-metal insulating material.Dividing plate another effect in the first embodiment is the mounting platform of water route and circuit, and the device of various water routes, circuit, accessory are installed in respectively that dividing plate two limits are whole again to be fixed with drain pan, so more are conducive to produce and convenient for maintaining.

Shown in Fig. 4 a-Fig. 4 c, dividing plate 7 tops are provided with radiating groove 74, and in order to further heat radiation, radiating groove laterally is provided with baffle plate 75 74 times, the spray that spills when stopping that the water route the leaks circuit chamber of bleeding.Dividing plate 7 belows are provided with circuit board storehouse 76, and circuit board storehouse 76 content circuits devices 5 have good waterproof effect.

In addition, shown in Fig. 3 a, Fig. 5 and Fig. 6 a, Fig. 6 b, the utility model also is provided with water flow sensing unit 100, current by-pass cock 101, header tank 102 etc., and it has cover 103, is provided with digital display screen 104, power switch 105, operated key 106 and Flow-rate adjustment button 107 etc. on the cover 103, its base plate 108 tops are provided with monolateral ventilation and heat groove 109, the below is provided with osculum 120, the chamber, water route so that machine leads when spray splashes to drain pan outward, and when there is water the chamber, water route, discharge.Said structure all is the device that this area product has, and is not described in detail its structure and connected mode at this.

Fig. 3 d-g is the utility model the second embodiment schematic diagram, is storage-type electric water heater, and housing 1 inside is divided into water tank 102, chamber, water route 11 and circuit chamber 12, is provided with dividing plate 7 between chamber, water route 11 and the circuit chamber 12; Utilize dividing plate with water and electricity two Room that are placed in.Wherein, comprise heating water pond 2, water pipe 4, water pump 110, flow sensor 100, radiation aluminium water pipe 41, cold water check-valves 111, hot-water check valve 112 in the chamber, water route 11, comprise induction coil 3, circuit arrangement 5, IGBT radiating subassembly 8 in the circuit chamber 12.

In addition, dividing plate of the present utility model can adopt metal material or non-metallic material, and this dividing plate has water pond hole and radiation aluminium hole when being metal material, if can not establish the water pond hole when dividing plate is nonmetallic materials.

In the electromagnet water heater of the present utility model in the water route of heating plate current basically constant speed flow, temperature was the highest when water temperature constantly heated the arrival delivery port in flow process, be conducive to the output of energy, also reduce thermal accumlation and make the temperature rising of heating water pond and affect the life-span.A plurality of heating water ponds can be set can and connect or be connected in series (this case embodiment is two), the relatively high but discharge of final outflow water temperature reduces relatively during serial connection, and the thermal efficiency can decrease.

The immediately heating water heater course of work: cold water enters from water inlet and through delay trigger circuit work the heating plate heater is heated after rear promotion water flow sensing unit single-chip microcomputer is obtained signal, when passing through the radiation aluminium water pipe, cold water heats water pond to flowing into after the cooling of IGBT pipe, current flow into behind the heating water pond minutes two the road and flow through from the convolution of heating board two limits, the electromagnetic field of high frequency that solenoid produces is taken away the heat energy that heating board produces the eddy current conversion, hot water flows out delivery port again after header tank makes water temperature slightly evenly, delivery port has a flow regulator can carry out the adjustment of discharge.By operated key and the demonstration that operating surface covers, can set watt level, water temperature height and working time length.At water pond outlet reload temperature sensor, can accomplish the control of Intelligent water, flow by Single-chip Controlling.

The course of work of storage-type electric water heater: during work, cold water enters from water inlet that the gas the water tank is discharged by outlet pipe by installation personnel when using at first to the laggard water tank 102(of entering of heating water pond 2 heating by subcooled water check-valves 111, flow sensor, until hot water flows out from outlet pipe).If the hot water in the water tank does not reach the water temperature of setting, control circuit makes water pump 110 work, at this moment the water in the water tank is pressed into 2 heating of heating water pond through hot-water check valve 112, water pump 110, flow sensor 100 and flows into water tank 102 again, so continuous circulation, until after temperature reaches design temperature, just stop pump water and heat.When using hot water, cold water flows into by cold water pipe, adds in the water tank after the heating of heating water pond again.Flow sensor is to allow control circuit perception water flow just allow heating plate power up work, guarantees to heat safety.Hot water or cold water's check-valves is the direction that guarantees current.

Circuit analysis of the present utility model is as follows.

The electromagnet water heater circuit block diagram as shown in Figure 7, civil power provides one 310 dc source through piezo-resistance and fuse protection, balance filtering, current sampling mutual inductor and the backward solenoid of rectification filtering module and capacitor resonance loop; The pwm pulse that MCU sends carries out pulsewidth modulation with the level signal that detects synchronously and back-pressure inhibition module obtains, the output pulse width modulated square wave is through driving conducting and the shutoff of loop rear drive IGBT, thereby the electromagnetic field of high frequency that produces 20～35kHz in solenoid and capacitor resonance loop makes the heating board heating in the heating water pond.

Be protection IGBT pipe; also be provided with the surge detection of power supply, under-voltage detection, source current detection and IGBT temperature sensing circuit in the circuit; the signal that detects send MCU to judge; if then by the conducting that delays or suspend output pwm pulse control IGBT pipe whether Power Supplies Condition or IGBT working environment improper, thereby reach the safety of protection IGBT pipe and circuit.Synchronously detection and adjustment and back-pressure suppress circuit and by oscillation circuit pwm pulse are carried out sending the IGBT drive circuit to drive IGBT work after the pulsewidth modulation.Artificial power, temperature, the time conditions of setting also controlled the IGBT plumber by MUC by pwm pulse and reached as state.The detection of water temperature provides feedback information for the control water temperature.Buzzer reaches the effect of reminding user by acoustic alarm; Low-tension supply also provides the power supply of 20V simultaneously for MCU provides the power supply of 5V for drive circuit.

Analysis of main circuit.

The main circuit of electromagnet water heater heating as shown in Figure 8.Civil power obtains the dc source of 310V after rectification and C1, L2 filtering, IGBT and solenoid L1 and resonant capacitance C2 form the voltage resonance loop, break-make by the IGBT pipe is transformed into the alternating current that frequency is 20～35kHz to 310 direct current, the generation alternating electromagnetic field makes the heating plate generation eddy current in the heating plate and generates heat in solenoid, and the water that the heat energy of generation is crossed by Continuous Flow is taken away the hot water that becomes water heater and flowed out.

Single heating plate major loop.

Such as Fig. 9, when power supply connects, when the IGBT pipe did not add trigger impulse, IGBT managed not conducting, and L1 does not have electric current.

When trigger impulse is added to the G utmost point of IGBT during t1, the IGBT saturation conduction, current i 1 forms the loop (L2 is filter inductance from power supply inductance L 1, the IGBT pipe of flowing through, inductance value is slight in L1, when analyzing, do not consider), because the induction reactance of L1 does not allow current break, so arrive t2 stage i1 rising at t1;

When arriving t2, trigger impulse finishes, IGBT cut-off, but because the reaction of L1, and it is that the electric current of 0, L1 can only be to capacitor C 3 chargings that i can not drop to immediately; During to t3, the C3 electric charge is full of, and electric current is 0, and at this moment the magnetic energy of L1 all is converted into the electric energy of C3, has formed t2 to t3 stage charging current i2.The voltage at electric capacity two ends reaches maximum during t3, electric capacity both end voltage polarity be right+left-, the voltage that is added on the IGBT pipe CE utmost point this moment is that the voltage on supply voltage and the electric capacity superposes, and reaches crest voltage.

Arrive the t4 stage at t3, electric capacity discharges by L1, the sense of current and charging opposite direction, and because under the effect of L1 reactance, discharge current is from 0 slowly oppositely rising, the electric energy of electric capacity all converts the magnetic energy of inductance to during to t4, although this moment, the electric capacity both end voltage disappeared, but under the effect of inductive reactance, the magnetic energy on the L1 converts electric energy to and flows out through the L1 left end, forms the forward current i4 of D11 through C2; When arriving t4, the arrival of second trigger impulse, but since the magnetic energy of inductance discharge, the Ue that the damper tube electric current of the D11 that flows through makes the IGBT pipe for+, Uc be-, IGBT is in anti-inclined to one side state, IGBT still is in cut-off.Until the release of t5 inductance magnetic energy is complete, t4 is i4 to the electric current in t5 stage.

When arriving t5, i4 drops to 0, IGBT and returns to the positively biased state, and still under the effect that triggers, IGBT manages once again conducting, has formed current i 5, enters second period.

The IGBT ON time is longer, and it is larger that the electric weight of obtaining from power supply converts electromagnetic energy to, controls electromagnetic heating power so MCU is exactly the ON time of the width control IGBT by pwm pulse.

A plurality of heating plate major loops.

When a plurality of heating plates simultaneously during place in circuit, pwm pulse is added to respectively the oscillation circuit of each heating plate circuit after phase shift block, be subjected to deliver to the IGBT drive circuit behind synchronously detection and the back-pressure inhibitory control, carry out the moment and the length of conducting according to pulse width control IGBT, the electric current that changes solenoid changes power output.Phase-shift circuit is to guarantee that the angle of flow of each heating module sequentially differs the angle of 2 a π/n, i.e. two heating phase difference of pi (180 °) during water pond differs 2 π/3(120 ° during three heating water ponds), their circuit block diagram such as Figure 10, sequential chart such as Figure 11.

Two heating plate circuit are to increase by one group module at single circuit, the TWM trigger impulse of A dish heating water pond are added to the oscillation circuit of B dish heating water pond after phase shift, drive IGBT work after adjusting again.From sequential chart, can find out the IGBT electric current of two heating water ponds because the effect of phase shift, in the superimposed current of the power supply fixing angle that staggers.Two electric currents stacks can not occur to produce when unordered and produce double maximum current.Make like this load output of power supply steadily, simultaneously since the high-frequency alternating magnetic field that two inductance produce also because the stable angle that staggers, the alternating electromagnetism ripple also is the stable overlaid waveforms that staggers of sequential, is conducive to carry out High frequency filter, and the electromagnetic interference that circuit is produced drops to minimum.In like manner, during the combination of a plurality of heating modules, allow sequentially the stagger angle of 2 a π/n of their triggered time, guarantee that power supply can not run into issuable large current phenomena when unordered, the alternating electromagnetic field of stack also forms the waveform relevant with the n modulus, is conducive to filtering and shielding.What particularly point out here is, although can not come the synchronously electromagnetic viscosimeter of each heating module with the trigger impulse rising edge, but each IGBT is turn-offed by trigger impulse, and the time of turn-offing conducting is exactly period of oscillation, and cycle of oscillation by inductance, capacitance parameter decision (

), because number of inductor is constant, what affect parameter is exactly magnetic circuit coupling situation, and the heating board in the heat-generating disc is fixed, magnetic stripe and installation site on heat-generating disc and the induction coil are all fixed, so inductance value, capacitance are stable (considering that temperature is little to effect of parameters) relatively, so cycle of oscillation is also relatively stable.The cycle of TWM also just is controlled at and is a bit larger tham cycle of oscillation like this, guarantees the effective of triggering and conducting.

Be used for commercial induction cooker.

A plurality of electromagnetic heating circuit combinations are used for large-scale commercial induction cooker, combination by a plurality of small power electric magnetic circuits increases general power, every group is comprised of two induction coils, space symmetr distribute (respectively be 1,2,3 pair such as figure below), the IGBT trigger impulse sequential that in pairs coil is corresponding is identical and end to end connection coil is opposite, pan is linked to be pole pair to two solenoids as magnetic circuit, forms the magnetic pole of alternation under the effect of high-frequency ac current.The same order of trigger impulse corresponding to each group differs the angle of 2 π/n.The bottom of a pan can be that the plane also can be curved surface.Concrete layout as shown in figure 12.

In like manner, n Electromagnetic Heating order phase shift 2 π/n combinational circuit can also be used for the electromagnetic heating circuit of extruding machine plastic heating cylinder.Make power supply output balance to reach, reduce high-frequency electric field to the interference of electrical network.

Claims (9)

1. electromagnet water heater, the housing that comprises accommodating all parts, housing is equipped with the heating water pond at least, induction coil, water pipe, the circuit arrangement corresponding with heating water pond, water pipe is connected with the heating water pond, circuit arrangement is connected with induction coil, it is characterized in that, this heating water pond has upper water cover and lower water cover, is provided with up and down heating plate between the water cover; Upward water cover and/or lower water cover are provided with tank; Upward water cover and lower water cover are nonmetallic materials, and this heating plate is the magnetic conductive metal material.

2. electromagnet water heater as claimed in claim 1 is characterized in that, this enclosure interior is divided into chamber, water route and circuit chamber, is provided with dividing plate between chamber, water route and the circuit chamber, and the below of chamber, water route is provided with osculum;

Comprise heating water pond, water pipe in the chamber, water route, comprise induction coil, circuit arrangement in the circuit chamber.

3. electromagnet water heater as claimed in claim 2 is characterized in that, this dividing plate is metal material, has water pond hole and radiation aluminium hole, water pond hole size and heating water pond and induction coil coupling, and heating water pond and induction coil are located at respectively both sides, water pond hole;

Water pipe connects the radiation aluminium water pipe, and circuit arrangement connects the IGBT radiating subassembly, and radiation aluminium water pipe and IGBT radiating subassembly are located at respectively both sides, radiation aluminium hole, and the radiation aluminium water pipe is located at the chamber, water route, and the IGBT radiating subassembly is located at the circuit chamber.

4. electromagnet water heater as claimed in claim 3 is characterized in that, high-pressure-resistant membrane has been sticked on this water pond hole and the radiation aluminium hole.

5. electromagnet water heater as claimed in claim 2 is characterized in that, the dividing plate top is provided with radiating groove, laterally is provided with baffle plate under the radiating groove; The dividing plate below is provided with circuit board storehouse, circuit board storehouse content circuits device.

6. electromagnet water heater as claimed in claim 2, it is characterized in that, this dividing plate is nonmetallic materials, have the radiation aluminium hole, heating water pond and induction coil are located at respectively the dividing plate both sides, and water pipe connects the radiation aluminium water pipe, circuit arrangement connects the IGBT radiating subassembly, radiation aluminium water pipe and IGBT radiating subassembly are located at respectively both sides, radiation aluminium hole, and the radiation aluminium water pipe is located at the chamber, water route, and the IGBT radiating subassembly is located at the circuit chamber.

7. electromagnet water heater as claimed in claim 1 is characterized in that, water cover lateral surface or bottom are provided with water inlet and delivery port on this.

8. electromagnet water heater as claimed in claim 1 is characterized in that, water cover lateral surface is provided with some ribs on this.

9. electromagnet water heater as claimed in claim 1, it is characterized in that, this heating plate is provided with water-guiding hole and pulling buckle through hole, upper water cover or lower water cover are provided with the pulling buckle bar, upper water cover or the lower water cover of not establishing the pulling buckle bar are provided with the pulling buckle hole, the pulling buckle bar inserts in the pulling buckle hole by the pulling buckle through hole, links to each other by the pulling buckle bar between upper water cover and the lower water cover.

Images