WO2022101936A1

WO2022101936A1 - Induction heating converter apparatus

Info

Publication number: WO2022101936A1
Application number: PCT/IN2021/051066
Authority: WO
Inventors: Vijay Deshpande; Richa NADKAR
Original assignee: Vijay Deshpande; Nadkar Richa
Priority date: 2020-11-12
Filing date: 2021-11-12
Publication date: 2022-05-19

Abstract

An induction heating converter apparatus 100 herein after referred to as apparatus 100 includes a control rectifier 104, an inverter 108, a high frequency i.e. H.F transformer 112, a coil cassette 116, a first controller 120, a display 124, a second controller 128 and a temperature feedback 132. The coil cassette 116 includes a first platen 204, a container 208 and a second platen 212. The first platen 204 and the second platen 212 include a coil 412, 612 respectively having a four wing butterfly shape. The container 208 includes a second coil 516. The apparatus 100 also includes a heat adjuster 1000 for controlling uniform distribution of heat includes a plurality of adjuster sets.

Description

“INDUCTION HEATING CONVERTER APPARATUS”

FIELD OF THE INVENTION

The present invention relates to an induction heating converter apparatus and more particularly to induction heating converter using soft switch technique.

BACKGROUND OF THE INVENTION

Many industrial applications require high temperature heating systems. Such applications include curing, pre heating, drying, annealing, incineration and melting. High temperature manufacturing includes tyre manufacturing, glass manufacturing, metal production and many more such industries. Traditionally high temperature industries such as tyre manufacturing include steps of forming the compounds of rubber, curing, annealing, drying and many more high temperature processes. For raw materials, carbon black, sulphur and other materials are mixed to form the rubber compound. After that a green tire is formed, the metal drum collapses, that allows he tire assembler to remove the tire. The green tire is then taken to a mould for curing.

Curing is also very important step in the manufacturing of tyres. It is very well established in the prior art that curing is used to give a tyre its final shape and tread pattern. Curing is the process of applying pressure to the green tyre in a mould. The process of curing involves the chemical cross-linking of rubber and vulcanizing agents, resulting in an elastomer. Generally, steam is typically used to create the heat and pressure needed for curing that gives final shape to the tyre. There is heat energy applied to stimulate a chemical reaction between the rubber compounds and other materials. At the end of cure the pressure is bled down, the mould opened, and the tire stripped out of the mould.

The most crucial problem in the process of curing is controlling the temperature various points and at different conditions. This is more acute in steam curing process. Attempts have been made to address this problem by increasing steam temperature. There were attempts to provide curing bladders in the prior art. However, there was no substantial success. There is need of an alternative heating method to address problems with tyre curing. Similarly, like tyre curing, many other high temperature processes such as pre heating, drying, annealing, incineration and melting require an alternative heating method to address the drawbacks of conventional heating systems.

There is a need of an induction heating converter for industrial operations. There is also a need of induction heating converter using soft switch technique.

SUMMARY OF INVENTION

An induction heating converter apparatus includes a control rectifier, an inverter, a high frequency i.e. H.F transformer, a display for uniform and controlled heating of industrial moulds. The induction heating converter apparatus also includes a coil cassette, first controller, second controller, a temperature feedback a heat adjuster, a first terminal box, a second terminal box and a third terminal box. The coil cassette includes a first platen, a container and a second platen positioned along a pre-defined vertical axis for heating the mould. The first controller is configured to generate high frequency sine waves and the second controller is configured to control the temperature inside the coil cassette. The temperature feedback records temperatures at multiple positions on the workpiece/object and the heat adjuster controls uniform distribution of heat. The first terminal box, the second terminal box and the third terminal box provides input and output to the coil cassette.

The first platen includes a cover defining a top, a plate defining a bottom, a first coil for heating, a first rebouncer, a first layer of insulators defined by a second insulator and a third insulator and a second layer of insulators defined by a first insulator and second insulator. The cover, plate, the first coil, the first rebouncer, the first layer of insulators and the second layer of insulators of the first platen are removably assembled using a plurality of screws. The first coil is defined by a butterfly shaped cassette construction having four identical wings.

The container is a hollow cylindrical construction includes a body, a heating plate on the inner circumference, a notch around the circumference of the body, a first layer of insulation defined by the first insulator and the second insulator, a second coil, a second layer of insulator defined by the second insulator, the third insulator and a second rebouncer. The notch of the container receives the first layer of insulation, then the second coil followed by the second layer of insulator and the second rebouncer that are held by a plurality of holders. The second coil is defined by a hollow cylindrical coil construction that is wound around the notch.

The second platen includes a cover defining a top, a plate defining a bottom, a third coil for heating, a third rebouncer, a first layer of insulators defined by the second insulator and the third insulator and a second layer of insulators defined by the first insulator and the second insulator. The third coil is defined by a butterfly shaped cassette construction having four identical wings.

The first insulator is a thermal insulator, the second insulator is an electrical insulator and the third insulator is a flux arrestor. The coil cassette includes a plurality of sensors positioned at pre-defined positions that are connected to the first controller and the second controller. The first terminal box, the second terminal box and third terminal box includes a water inlet, a power supply and a water outlet.

One adjuster set of the heat adjuster includes a screw passing through a pre-defined hole on the plate through a c-ring and a pre-defined hole on the coil is engaged by a nut positioned under the coil. The first controller initiates an equilibrium mode for maintaining the temperature inside the apparatus.

BRIEF DESCRIPTION OF THE DRAWINGS

The objectives and advantages of the present invention will become apparent from the following description read in accordance with the accompanying drawings wherein

FIG. 1 shows a block diagram of the induction heating converter apparatus; FIG. 2 shows a top perspective view of a coil cassette of the apparatus of FIG. 1 along axis- X;

FIG. 3 shows an exploded view of a coil cassette of the apparatus of FIG. 1 along axis- X; FIG. 4 shows an exploded view of a first platen of the coil cassette of the apparatus of FIG. 1 along axis- Y;

FIG. 5 shows an exploded view of a container of the coil cassette of the apparatus of FIG. 1 along axis- Z;

FIG. 6 shows an exploded view of a second platen of the coil cassette of the apparatus of FIG. 1 along axis- A;

FIG. 7 shows a layout of the coil cassette of the apparatus of FIG. 1;

FIG. 8 shows a block diagram of a first controller the apparatus of FIG. 1;

FIG. 9 shows a block diagram of a second controller the apparatus of FIG. 1;

FIG. 10A shows an exploded view of a heat adjuster of the apparatus of FIG. 1; FIG. 10B shows an exploded view of one adjuster set of the heat adjuster of the apparatus of FIG. 1 along axis-B; and

FIG. 11 shows an operational cycle the apparatus of FIG. 1.

DETAILED DESCRIPTION OF THE INVENTION The invention described herein is explained using specific exemplary details for better understanding. However, the invention disclosed can be worked on by a person skilled in the art without the use of these specific details.

References in the specification to "one embodiment" or "an embodiment" means that particular feature, structure, characteristic, or function described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of the phrase “in one embodiment” in various places in the specification are not necessarily all referring to the same embodiment.

References in the specification to “preferred embodiment” means that a particular feature, structure, characteristic or function described in detail, thereby omitting known constructions and functions for clear description of the present invention.

The foregoing description of specific embodiments of the present invention has been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the present invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching.

In general aspect, the present invention is an induction heating converter apparatus 100 that is used as an induction heating converter for industrial applications such as curing, pre heating, drying, incineration, annealing, etc.

The induction heating converter apparatus 100 hereafter referred to as apparatus 100 of the present invention includes a control rectifier 104, an inverter 108, a high frequency i.e. H.F transformer 112, a coil cassette 116, a first controller 120, a display 124, a second controller 128 and a temperature feedback 132. The control rectifier 104 converts AC utility supply in DC that is fed to the HF Inverter 108. It is understood, however that the HF Inverter 108 is a Digital Signal Controller (DSC) based induction converter with Proportional Integral Differential (PID) based temperature controller. The DSC TMS320F2802X family controller is used to derive the desired signals to drive the Power Switching Devices. Said controller has 16.66 micro-seconds per cycle execution time, 8 PWMs and 16 ADC.

In accordance with the present invention, temperature from multiple positions of the heating object is advantageously recorded using the temperature feedback 132. The accuracy of temperature within the range of +/- 10 Celsius +/- 1% is achieved. In this embodiment, the H.F. Transformer 112 is the ferrite core transformer that includes an appropriate heat sink assembly. The output of this transfer is the High Frequency Sine Wave that is induced in the induction coil 116. The coil cassette 116 advantageously achieves higher energy efficiency relative to steam heating tyre curing presses known in the art. According to the present invention, the coil cassette 116 is made up of multiple layers of insulators and protectors such as EM field arrestors, electrical insulators, heat insulators and the like.

The display 124 of the apparatus 100 gives graphical outputs. In accordance with the present invention, a user interface with MODBUS compatibility is capable of displaying the data in graphical manner and also connects with any external devices like PLC/SCADA.

Now referring to FIGS. 2 and 3, the coil cassette 116 is described. The coil cassette 116 includes a first platen 204, a container 208 and a second platen 212. The first platen 204 and the second platen 212 include a through hole. The cylindrical container 208 is preferably a hollow container with a notch. The first platen 204 is received along a plurality of guide bars 216 along axis-X preferably longitudinally so as to rest the first platen 204 on a top end portion of the container 208 in a direction indicated by arrow ‘A’. Similarly, the assembly of the first platen 204 and the container 208 is removably positioned along axis-X on a top end portion of the second platen 212 in a direction indicated by arrow ‘B’ using hydraulic/mechanical components. The first platen 204 includes a first terminal box 220, the second platen 212 includes a second terminal box 224 and the container 208 includes a third terminal box 228.

It is to be noted that the present invention advantageously reduces heat losses using the core heating/direct heating of tyre molds. Due to direct heating, energy consumption of the apparatus 100 is reduced by approximately 33% relative to the steam based tyre curing press (TCP) systems in the art. It is observed that in one embodiment of the apparatus 100 having specifications Total Power 22 KVA, High frequency operation, fully isolated from commercial mains, SCADA computable, temperature controlled using PID, having the first controller 120 enclosed in a enclosure sized 900 x 800 x 1300 mm, platen diameters are 914, 1200, 1220, 1320, 1600, 1650 and 1701 millimeters, the maximum temperature of heating achieved is 190 °C in 3 hours from room temperature of 20 °C. Average power rating is 6 to 8 KVA of each platen and container. An Accuracy of +- 1% across the surface of the platen 204, 212 and container 208 is observed.

In accordance with the present invention, the first platen 204 and the second platen 212 are approximately circular in shape. In this one embodiment, the outer diameter of the platen 204, 212 is 1600 mm.

Referring to FIG. 4, an exploded view of the first platen 204 along axis-Y is described. The first platen 204 includes a cover 404 that defines a top of the platen 204, a plate 408 that defines the bottom of the platen 204 and a coil 412 that is approximately positioned in the middle of the platen 204. In accordance with the present invention, the first platen 204 includes a plurality of insulators positioned at pre-defined locations relative to the coil 412 such as a first insulator i.e. a thermal insulator, second insulator i.e. an electrical insulator and a third insulator i.e. preferably a flux arrestor.

The first insulator is preferably made of ceramic, Glass wool, Rock wool, Glass Foam, PVC Foam. The second insulator is preferably made of mica, styrofoam, plastic, wax, rubber, dry air, glass, rubber, teflon, mica, quartz, porcelain, asphalt. The third insulator is preferably made of ferrite, Galvanized steel, Fluxtrol, and the like.

The first platen 204 includes a first rebouncer 416 that is positioned between the plate 404 and a first layer of insulators 420. In this embodiment, the coil 412 is preferably of a butterfly shaped cassette construction having four approximately identical wings. The first layer of insulators 420 is defined by one second insulator and one third insulator positioned between the first rebouncer 416 the coil 412.

A second layer of insulators 424 is defined by one first insulator and one second insulator such that the second layer of insulators 424 is positioned between the coil 412 and the plate 408 respectively. The first platen 204 also includes a plurality of screws 436 for removable assembling the cover 404, plate 408, the coil 412, the first rebouncer 416, the first layer of insulators 420 and the second layer of insulators 424 together.

In this embodiment, the coil 412, the first rebouncer 416, the first layer of insulators 420 and the second layer of insulators 424 are preferably of butterfly shape having four wings, however in another embodiment the number of wings may vary as per the requirement.

The plate 408 is a carved plate the components are fitted in a pre-defined manner that is not subjected to change. Firstly, the plate 408 advantageously receives the second layer of insulators 424, then the coil 412, then first layer of insulators 420, the first rebouncer 416 and finally the cover 404. It is to be noted that the components of the first platen 204 are assembled with screws 436. Sequence of assembly is fixed in all cases to achieve the uniform heating.

Now referring to FIG. 5, an exploded view of the container 208 along Axis-Z is described. The container 208 is preferably a hollow cylindrical construction that includes a body 504 that further includes a heating plate 506 on the inner circumference and a notch 508 around the circumference of the body 504. The container 208 also includes a first layer of insulation 512 defined by a first insulator and a second insulator that is positioned between the container 208 and a second coil 516. The second coil 516 is defined by a hollow cylindrical coil construction that is wound around the notch 508. The container 208 also includes a second layer of insulator 520 defined by a second insulator, a third insulator that are positioned between the second coil 516 and a second rebouncer 524. The container 208 also includes a plurality of holders 536 removably positioned around the notch 508. The inner side of the container 208 defines the plate 506 that advantageously facilitates heating of the mold in accordance with the present invention during the curing process.

Inside the container a mold is placed as per the discretion of the user using mold guides (not shown). The container 208 advantageously receives the first layer of insulation 512, and then the second coil 516 followed by the second layer of insulator 520 and the second rebouncer 524. The first layer of insulation 512, the second coil 516, the second layer of insulator 520, the second rebouncer 524 are positioned inside the notch 508 by the plurality of holders 536.

In this embodiment the first layer of insulation 512, the second coil 516, second layer of insulation 520 and the second rebouncer 524 are cylindrical in shape, however in other embodiments the shape may vary per requirements.

As shown in FIG. 6, an exploded view of the second platen 212 along axis-A is described. The second platen 212 includes a cover 604 that defines a top of the platen 212, a plate 608 that defines the bottom of the platen 212 and a third coil 612 that is approximately positioned in the middle of the platen 204. The second platen 212 includes a third rebouncer 616 that is positioned between the plate 604 and a first layer of insulators 620.

In this embodiment, the third coil 612 is preferably of a butterfly shaped cassette construction having four approximately identical wings. The first layer of insulators 620 is defined by one second insulator and one third insulator positioned between the third rebouncer 616 and the coil 612.

The second layer of insulators 624 is defined by one first insulator and one second insulator such that the second layer of insulators 624 is positioned between the coil 612 and the plate 608 respectively. The first platen 604 also includes a plurality of screws 636 for removably assembling the cover 604, plate 608, the third coil 612, the third rebouncer 616, the first layer of insulators 620 and the second layer of insulators 624 together.

In this embodiment, the coil 612, the third rebouncer 616, the first layer of insulators 620 and the second layer of insulators 624 are preferably of butterfly shape having four wings, however in another embodiment the number of wings may vary as per the requirement.

Now referring to FIG. 7, a layout of the coil cassette 116 is shown. The first terminal box 220, the second terminal box 224 and the third terminal box 228 are used to provide input and output to the coil cassette 116. The first, second and third terminal box 220, 224 and 228 respectively include a water inlet, a power supply and a water outlet. The water inlet is preferably connected to a main water supply. The coil cassette 116 also includes a plurality of sensors positioned at predefined positions that are connected to the first controller 120 and the second controller 128. In this embodiment 4 temperature sensors are used in each platen 204, 212 and 2 in the container 208. 1 flow sensor is mounted in the first, second and third terminal box 220, 224 and 228 respectively.

Referring to FIG. 8, the first controller 120 of the apparatus 100 is described. The first controller 120 includes a mini-circuit breaker i.e. MCB 804, an input CTC 808, a rectifier 812 preferably a silicon controlled rectifier (SCR), a choke 816, a fuse 820, a capacitor bank 824, an output transformer 828, a IGBT stack 832, an Resistance Temperature Detector (RTD) connection 836 and a ferrite choke 840. The first controller 120 preferably uses 3-phase power supply.

The first controller 120 receives input from the plurality of sensors in the coil cassette 116. The MCB 804 is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit i.e. shut-off after fault is detected. The input CTC 808 is a specially designed flexible foot enabled for easy mounting and dismounting from the din rail. The CTC 808 has marker holding recesses to accept marking tags for circuit identification. The rectifier 812 is used for 3-phase rectification of the input 3-phase power supply.

The choke 816 preferably a DC choke is used to filter have marker holding recesses to accept marking tags for circuit identification. The fuse 820 is a high rupturing capacity fuse which can withstand with the short circuit current for a time period that blows off, if the fault occurs and circuit remains safe. The capacitor bank 824 is a combination of no. of capacitors of similar rating that are joined in parallel or series with one another to store electrical energy. The capacitor bank 824 is then used to counteract or correct a power factor lag or phase shift in an AC power supply or to increase the ripple-current capacity of the power supply. The output transformer 828 is a high frequency, ferrite core large transformers and used to step down the high voltage AC to low voltage AC at high frequencies derived from a DC source.

The IGBT stack 832 is fast switching devices working on high frequency PWM signals for converting DC supply into high frequency AC output. The RTD connection 836 is connected to the plurality of temperature sensors present in the coil cassette 116. The ferrite choke 840 is connected in series with the transformer 828 and coil cassette 116 so that minimum reactive power is drawn from the DC supply during operation.

Now referring to FIG. 9, a block diagram of the second controller 128 is described. The second controller 128 includes a display 900, a plurality of input switches 904 and an Ethernet port 908. The input switches 904 advantageously allow an individual to control the temperature inside the coil cassette 116. The second controller 128 is configured to control the temperature using the first controller 120.

Referring to FIG. 10A and 10B, a heat adjuster 1000 for controlling uniform distribution of heat in the apparatus 100 is described. The heat adjuster 1000 includes a plurality of adjuster sets. Accordingly, one adjuster set includes a screw 1008, a c-ring 1012 and a nut 1016. The screw 1008 passes through a predefined hole on the plate 404 through the c-ring 1012 and a pre-defined hole on the coil 412. The nut 1016 positioned under the coil 412 engages the screw 1008. It is to be noted that the relative distance between the plate 404 and the coil 412 is advantageously controlled by tightening and un-tightening the screw 1008. During tightening/ un-tightening the plate 404 moves relative to the coil 412. Now, tightening of the screw 1008 reduces the distance between the plate 404 and the coil 412 that in-turn increases the electro-magnetic flux. Increase in the electro-magnetic flux increases the temperature. Similarly, un-tightening of the screw 1008 increases the distance between the plate 404 and the coil 412 that in-turn decreases the electro-magnetic flux. Reduction in the electro-magnetic flux decreases the temperature.

Referring to FIG. 11, an operational cycle 1100 of the apparatus 100 is described. In a first step 1108, the input power supply is started. In a next step 1112, the user sets the operational temperature as per requirement using the input switches 904 of the second controller 128. In a next step 1116, the first controller 120 is activated. The first controller 120 receives power from the input supply and generates signals.

In a next step 1120, high frequency sine waves are generated by the rectifier 812 and the IGBT stack 832 of the internal controller. These high frequency waves are received by the coil cassette 216. The coils 412, 516, 612 generate and radiate electromagnetic waves that is received by the plate 506. The plate 506 is heated up to the set temperature. In a next step 1124, if the set temperature is achieved the apparatus 100 enters a next step 1128. If not the coils 412, 516, 612 continue to receive high frequency sine waves. In the next step 1128, the apparatus 100 initiates equilibrium mode for marinating the temperature inside the apparatus 100. The temperature in the apparatus 100 is constantly monitored by the first controller 120 using the plurality of sensors. In a next step 1132, temperature variations are detected by the controller 120 and the power level and wave generation is adjusted by the first controller 120 to adjust the temperature. In a final step 1136, the controllers 120, 128 continuously monitor the apparatus 100 for detecting faults and shut off the apparatus 100 in case of fault detection.

Now referring to FIG. 1-11 in operation, a curing cycle for preparing a tyre using the apparatus 100 of the present invention is discussed. The apparatus 100 is in the initial condition as shown in FIG. 1, power is switched on for preheating the apparatus 100 on desired temperatures of platens 204, 212 and the container 208 each. For example the platens and container temperature is set by providing appropriate inputs to achieve temperatures in a range of 140 to 190 °C. It is understood that the container 208 includes a pre-defined mode in accordance with the requirement of tires to be molded. The pre-heating i.e. induction heating in accordance with the present invention is preferably done for a predefined amount of time of approximately 2 to 3 hours in accordance with the present invention.

After pre-heating is achieved, the heating process continues during operation and simultaneously a first loading cycle of the green tyre is started. The top platen 204 and the container 208 are lifted in an upward direction along axis- X relative to the bottom platen 212 preferably by a hydraulic lift. It is to be noted that the relative distance between the bottom platen 212 and the container 208 is approximately 300 mm. A robotic arm (not shown) positions a green tyre (standardized tyre) approximately centrally on the top of the bottom platen 212. After positioning of the green tyre, the top platen 204 and the container 208 are pressed back on the bottom platen 212. The green tyre is advantageously received in the mold of the container 208 and the tyre is cured.

After curing is completed, a second unloading cycle starts wherein, the top platen 204 and the container 208 are lifted in an upward direction along axis-X relative to the bottom platen 212. The robotic arm advantageously removes the cured tyre from the bottom platen 212 and the apparatus 100 is ready for the next curing cycle.

After loading the green tyre and during the curing cycle, the temperature of the apparatus 100 drops approximately by 2 to 3 °C, additional power is provided to the coils 412, 516, 612 to cover the temperature drop. The first controller 120 through the PID and plurality of sensors advantageously monitors the temperature and controls the power required by the coils 412, 516, 612.

The induction heating converter apparatus 100 is advantageously a well- protected apparatus and includes protection measures for input overvoltage, phase fail, short circuit, water fail and the like. The induction heating converter apparatus 100 advantageously increases production time and productivity during induction heating. The induction heating converter apparatus 100 is advantageously compatible with existing tyre formation machine setups. The induction heating converter apparatus 100 advantageously has an accuracy of +/- 1%. The induction heating converter apparatus 100 advantageously achieves higher energy efficiency relative to steam heating tyre curing presses.

It is to be noted that in other embodiments, the apparatus 100 is used for other industrial heating applications such as drying, incineration, annealing and the like.

The induction heating converter apparatus 100 advantageously reduces heat losses to the atmosphere using direct heating. The induction heating converter apparatus 100 advantageously decreases temperature of working environment relative to existing tyre curing presses. The induction heating converter apparatus 100 is advantageously configurable as per requirements of an individual. The induction heating converter apparatus 100 advantageously achieves higher operational efficiency relative to traditional (steam) tyre curing apparatus. The induction heating converter apparatus 100 advantageously records temperature from multiple positions of heating objects. The induction heating converter apparatus 100 advantageously reduces energy consumption relative to steam based tyre curing press systems. The induction heating converter apparatus 100 advantageously allows controlling of uniform distribution of heat.

The embodiments were chosen and described in order to best explain the principles of the present invention and its practical application, to thereby enable others, skilled in the art to best utilize the present invention and various embodiments with various modifications as are suited to the particular use contemplated. It is understood that various omission and substitutions of equivalents are contemplated as circumstance may suggest or render expedient, but such are intended to cover the application or implementation without departing from the scope of the present invention.

Claims

We Claim:

1. A induction heating converter apparatus 100 including a control rectifier 104, an inverter 108, a high frequency i.e. H.F transformer 112, a display 124 for uniform and controlled heating of industrial moulds comprising: a coil cassette 116 including a first platen 204, a container 208 and a second platen 212 positioned along a pre-defined vertical axis for heating the mould; a first controller 120 configured to generate high frequency sine waves; an second controller 128 configured to control the temperature inside the coil cassette 116; a temperature feedback 132 for recording temperatures at multiple positions on the mould and a heat adjuster 1000 for controlling uniform distribution of heat; and a first terminal box 220, a second terminal box 224 and a third terminal box 228 providing input and output to the coil cassette 116.

2. The induction heating converter apparatus 100 as claimed in claim 1 wherein, the first platen 204 including a cover 404 defining a top, a plate 408 defining a bottom, a coil 412 for heating, a first rebouncer 416, a first layer of insulators 420 defined by a second insulator and a third insulator and a second layer of insulators 424 defined by a first insulator and second insulator. The induction heating converter apparatus 100 as claimed in claim 2 wherein, the cover 404, the plate 408, the coil 412, the first rebouncer 416, the first layer of insulators 420 and the second layer of insulators 424 of the first platen 204 are removably assemble-able using a plurality of screws 436. The induction heating converter apparatus 100 as claimed in claim 2 wherein, the first coil 412 defining butterfly shaped cassette construction having four identical wings. The induction heating converter apparatus 100 as claimed in claim 1 wherein, the container 208 is a hollow cylindrical construction including a body 504, a heating plate 506 on the inner circumference, a notch 508 around the circumference of the body 504, a first layer of insulation 512 defined by the first insulator and the second insulator, a second coil 516, a second layer of insulator 520 defined by the second insulator, the third insulator and a second rebouncer 524. The induction heating converter apparatus 100 as claimed in claim 6 wherein, the notch 508 of the container 208 receiving the first layer of insulation 512, then the second coil 516 followed by the second layer of insulator 520 and the second rebouncer 524 are held by a plurality of holders 536.

7. The induction heating converter apparatus 100 as claimed in claim 6 wherein, the second coil 516 defining a hollow cylindrical coil construction that is wound around the notch 508.

8. The induction heating converter apparatus 100 as claimed in claim 1 wherein, the second platen 212 including a cover 604 defining a top, a plate 608 defining a bottom, a third coil 612 for heating, a third rebouncer 616, a first layer of insulators 620 defined by the second insulator and the third insulator and a second layer of insulators 624 defined by the first insulator and the second insulator.

9. The induction heating converter apparatus 100 as claimed in claim 7 wherein, the third coil 612 defining butterfly shaped cassette construction having four identical wings.

10. The induction heating converter apparatus 100 as claimed in claim 1 wherein, the first insulator is a thermal insulator, the second insulator is an electrical insulator and the third insulator is a flux arrestor.

11. The induction heating converter apparatus 100 as claimed in claim 1 wherein, the coil cassette 116 including a plurality of sensors positioned at pre-defined positions are connected to the first controller 120 and the second controller 128.

12. The induction heating converter apparatus 100 as claimed in claim 1 wherein, the first terminal box 220, the second terminal box 224 and third terminal box 228 including a water inlet, a power supply and a water outlet. The induction heating converter apparatus 100 as claimed in claim 1 wherein, one adjuster set of the heat adjuster 1000 including a screw 1008 passing through a pre-defined hole on the plate 404 through a c-ring 1012 and a pre-defined hole on the coil 412 engaged by a nut 1016 positioned under the coil 412. The induction heating converter apparatus 100 as claimed in claim 1 wherein, the first controller 120 initiating an equilibrium mode for maintaining the temperature inside the apparatus 100.