INDUCTION HEATING DEVICE

• US 20100044367A1
• Filed: 08/21/2008
• Published: 02/25/2010
• Est. Priority Date: 08/21/2008
• Status: Abandoned Application

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Park, Byeong Wook, KIM, Won Tae, Ryu, Seung Hee
• Application Number:
  US12/195,987
• Publication Number:
  US 20100044367A1
• Time in Patent Office: Days
• US Class Current: 219/660
• CPC Class Codes: H05B 2206/022 Special supports for the induction coils
• CPC Class Codes: H05B 6/1263 using coil cooling arrangements

Abstract

An induction heating device includes a main body, an induction coil provided in the main body and forming an electromagnetic field, and an induction coil driving circuit unit positioned in the main body to be physically and thermally separated from the induction coil.

Claims

1. An induction heating device comprising:

an induction coil for producing an electromagnetic field;

an induction coil base for supporting the induction coil;

a circuit unit for driving the induction coil, the circuit unit being separated from the induction coil base; and

a thermally insulating member located between the induction coil base and the circuit unit.

2. The device of claim 1, further comprising a support unit supporting the induction coil base.

3. The device of claim 2, wherein the support unit comprises:

a support shaft provided under the induction coil base; and

an elastic member provided at the support shaft and allowing the induction coil base to have elasticity in a vertical direction.

4. The device of claim 2, wherein a plurality of support units are disposed at the periphery of the induction coil base, and the circuit unit is positioned between the plurality of the support units.

5. The device of claim 1, wherein the circuit unit comprises:

a circuit board that supplies power to the induction coil.

6. The device of claim 5, wherein said thermally insulating member includes a circuit cover made of a thermally insulating material.

7. The device of claim 5, wherein said thermally insulating member includes:

a box-shaped circuit body that encloses the circuit board.

8. The device of claim 7, wherein the circuit body comprises:

a circuit case that covers the perimeter and a lower portion of the circuit board; and

a circuit cover that covers an upper portion of the circuit board.

9. The device of claim 7, wherein said thermally insulating member is made of a thermally insulating material.

10. The device of claim 2, wherein the induction coil base is made of an aluminum material.

11. The device of claim 2, wherein the circuit unit is positioned separately at a lower side of the induction coil base.

12. An induction heating device comprising:

an induction coil for producing an electromagnetic field;

a circuit unit that supplies power to the induction coil; and

a circuit unit housing for receiving the circuit unit and separating the circuit unit from the induction coil.

13. The device of claim 12, further comprising:

an air blower provided at one side of the circuit unit housing and configured to supply air through an air-cooling flow path; and

a discharge hole formed at the other side of the circuit unit housing and configured to discharge air that has passed through the air-cooling flow path.

14. The device of claim 13, wherein the discharge hole comprises at least one of a plurality of slit type holes, a single large hole, and a louver.

15. The device of claim 12, wherein the circuit unit housing is positioned to be thermally separated from the induction coil.

16. The device of claim 12, further comprising:

an induction coil base provided under the induction coil and supporting the induction coil; and

a support unit supporting the induction coil base.

17. The device of claim 16, wherein the support unit comprises:

a support shaft provided under the induction coil base; and

an elastic member provided at the support shaft and allowing the induction coil base to have elasticity in a vertical direction.

18. The device of claim 12, wherein the circuit unit housing comprises:

a circuit case that covers the perimeter and a lower portion of the circuit board; and

a circuit cover that covers an upper portion of the circuit board.

19. The device of claim 12, wherein the circuit unit housing is made of a thermal insulation material.

20. An induction heating device comprising:

an induction coil for producing an electromagnetic field;

an induction coil base for supporting the induction coil;

a circuit unit for driving the induction coil, the circuit unit being separated from the induction coil base; and

a circuit unit housing for receiving the circuit unit, the circuit unit housing including a thermally insulating member located between the induction coil base and the circuit unit for thermally separating the circuit unit from the induction coil.