Induction Heating Coil Design: Rectangular vs. Spiral Shape

In summary, the conversation discussed the design of a power converter for high frequency induction heating. The main concern was the design of the induction coil, with the customer wanting a rectangular shape instead of a flat spiral. However, it was concluded that this design would not work as it would cancel out the magnetic field lines. It was suggested that a 3-D or 2-D coil would be more suitable for this purpose.
  • #1
Davide Fabri
1
0
Goodmornig everybody,
I'm working on the design of a power converter for high frequency induction heating. The induction coil should be a flat spiral (pancake) with a rectangular shape, but my customer would like to design it as shown in the following picture. I think it will not work because that way magnetic field lines are canceled. What do you think ?
Thank you.
Davide

2ebe1yv.jpg
 
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  • #2
Davide Fabri said:
Goodmornig everybody,
I'm working on the design of a power converter for high frequency induction heating. The induction coil should be a flat spiral (pancake) with a rectangular shape, but my customer would like to design it as shown in the following picture. I think it will not work because that way magnetic field lines are canceled. What do you think ?
Thank you.
Davide

2ebe1yv.jpg
Welcome to the PF.

Your thoughts are correct. That will not
work. It needs to be a 3-D coil, or at least a 2-D coil.
 

Related to Induction Heating Coil Design: Rectangular vs. Spiral Shape

1. What is the purpose of the coil shape in induction heating?

The coil shape in induction heating is crucial for the efficient transfer of electromagnetic energy to the heated material. The shape of the coil determines the distribution and direction of the magnetic field, which in turn affects the heating pattern and efficiency of the process.

2. How does the shape of the coil affect the heating process?

The shape of the coil can affect the heating process in several ways. A larger coil can provide a wider heating area, while a smaller coil can provide a more concentrated and intense heating. The shape also determines the direction of the magnetic field, which can result in different heating patterns and efficiencies.

3. What are the common coil shapes used in induction heating?

The most commonly used coil shapes in induction heating are cylindrical, helical, and pancake. Cylindrical coils are used for heating long and narrow objects, helical coils are used for heating larger and more complex objects, and pancake coils are used for heating flat surfaces.

4. How do I choose the right coil shape for my specific heating application?

The choice of coil shape depends on various factors such as the shape and size of the material being heated, the required heating pattern and efficiency, and the power and frequency of the induction heating system. It is best to consult with a specialist or conduct experiments to determine the most suitable coil shape for your specific application.

5. Can the coil shape be changed during the heating process?

In most cases, the coil shape cannot be changed during the heating process as it can disrupt the magnetic field and affect the heating. However, some advanced induction heating systems have the capability to dynamically change the coil shape for specific applications.

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