Magnetron driving circuit board for microwave oven

• US 20040050842A1
• Filed: 03/24/2003
• Published: 03/18/2004
• Est. Priority Date: 09/14/2002
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Cho, Young-Won, Han, Yong-Woon, Han, Dae-Sung, Jang, Seong-Deog, Yeo, Joo-Yong
• Granted Patent: US 6,906,298 B2
• Time in Patent Office: Days
• US Class Current: 219/702
• CPC Class Codes: H05B 6/6402 Aspects relating to the microwave cavity
• CPC Class Codes: H05B 6/666 Safety circuits emergency protective circuits in general H02H

Abstract

A microwave oven having a magnetron that generates microwaves, a magnetron driving circuit that supplies high voltage power to the magnetron and a machine room that accommodates the magnetron and the magnetron driving circuit. The microwave oven includes a single magnetron driving circuit board in which the magnetron and the electronic devices of the magnetron driving circuit are mounted thereon. The single magnetron driving circuit board is fixedly attached to the machine room by mounting members.

Claims

1. A microwave oven having a magnetron that generates microwaves, a magnetron driving circuit that supplies high voltage power to the magnetron and a machine room that accommodates the magnetron and the magnetron driving circuit, comprising:

a single magnetron driving circuit board in which the magnetron and electronic devices of the magnetron driving circuit are mounted thereon;

wherein the magnetron driving circuit board is fixedly attached to the machine room by mounting members.

2. The microwave oven as set forth in claim 1, wherein said electronic devices include a high voltage transformer, a high voltage diode and a high voltage condenser.

3. The microwave oven as set forth in claim 2, wherein said electronic devices are electrically connected to one another by coated copper wires.

4. The microwave oven as set forth in claim 2, wherein said electronic devices are electrically connected to one another in a patterning manner that is used in printed circuit boards.

5. The microwave oven as set forth in claim 2, wherein the high voltage condenser and the high voltage diode are mounted on a first surface of the single magnetron driving circuit board and the high voltage transformer is mounted on a second surface of the single magnetron driving circuit board.

6. The microwave oven as set forth in claim 1, further comprising:

an air cover mounted on the single magnetron driving circuit board to supply air to a cooking cavity of the microwave oven.

7. The microwave oven as set forth in claim 1, further comprising:

a control unit;

a power cable used to receive power from an outside source to the single magnetron driving circuit; and

a control signal cable used to receive control signals from the control unit to the single magnetron driving circuit.

8. The microwave oven as set forth in claim 7, wherein the power cable and the control signal cable, respectively, are constructed in a form of a harness.

9. A magnetron driving circuit generating high voltage power used to drive a magnetron, comprising:

a single magnetron driving circuit board, the magnetron and electronic devices of the magnetron driving circuit mounted thereon.

10. The magnetron driving circuit as set forth in claim 9, wherein the electronic devices include a high voltage transformer, a high voltage diode and a high voltage condenser.

11. The magnetron driving circuit as set forth in claim 10, wherein the electronic devices are electrically connected to one another by coated copper wires.

12. The magnetron driving circuit as set forth in claim 10, wherein the electronic devices are electrically connected to one another in a patterning manner that is used in printed circuit boards.

13. The magnetron driving circuit as set forth in claim 10, wherein the high voltage condenser and the high voltage diode are mounted on a first surface of the single magnetron driving circuit board and said high voltage transformer is mounted on a second surface of the single magnetron driving circuit board.

14. The magnetron driving circuit as set forth in claim 9, further comprising:

a power cable used to receive power from an outside source; and

a control signal cable used to receive control signals from a control unit.

15. The magnetron driving circuit as set forth in claim 14, wherein the power cable and control signal cable, respectively, are constructed in a form of a harness.

16. The magnetron driving circuit as set forth in claim 9, wherein at least one mounting hole is formed in the single magnetron driving circuit board and the single magnetron driving circuit board is fixedly attached to a machine room by tightening mounting members into the mounting hole.

17. A microwave oven including a machine room disposed therein and a magnetron to generate microwaves, comprising;

a driving circuit to provide power to the magnetron, the driving circuit comprising;

high voltage components; and

a single circuit board, the magnetron and the high voltage components being mounted on the single circuit board; and

coupling members to couple the single circuit board to the machine room.

18. The microwave oven as set forth in claim 17, wherein the high voltage components comprise a high voltage transformer, a high voltage diode, and a high voltage condenser.

19. The microwave oven as set forth in claim 18, wherein the single circuit board comprises:

coated copper wires to electrically connect the high voltage components.

20. The microwave oven as set forth in claim 18, wherein the single circuit board comprises:

a printed circuit board pattern to electrically connect the high voltage components.

21. The microwave oven as set forth in claim 17, wherein the high voltage components are mounted on opposite sides of the single circuit board.

22. The microwave oven as set forth in claim 18, wherein the high voltage condenser and the high voltage diode are mounted on one surface of the single circuit board and the high voltage transformer is mounted on an opposite surface of the single circuit board.

23. The microwave oven as set forth in claim 17, further comprising:

a cooking cavity to cook food disposed in the microwave oven; and

an air cover mounted on the single circuit board to supply air to the cooking cavity.

24. The microwave oven as set forth in claim 17, further comprising:

a control unit;

a power cable provided to receive power from an outside source; and

a control signal cable to control the driving circuit by control signals from the control unit.

25. The microwave oven as set forth in claim 24, wherein the power cable and the control signal cable, respectively, are provided in a form of a harness.

26. The microwave oven as set forth in claim 17, wherein the coupling members comprise:

coupling holes formed along an edge of the single circuit board; and

coupling units to be received in the coupling holes to couple the single circuit board to the machine room.

27. The microwave oven as set forth in claim 17, wherein:

the magnetron is mounted on one side of the single circuit board and comprises;

an antenna to radiate the microwave generated by the magnetron; and

the single circuit board comprises;

an antenna receiving hole in the single circuit board such that the antenna of the magnetron protrudes therethrough from an opposite side of single circuit board.

28. The microwave oven as set forth in claim 23, wherein:

the magnetron is mounted on one side of the single circuit board and comprises;

an antenna to radiate the microwave generated by the magnetron; and

the single circuit board comprises;

an antenna receiving hole in the single circuit board such that the antenna of the magnetron protrudes therethrough from an opposite side of single circuit board.

29. The microwave oven as set forth in claim 28, further comprising:

a waveguide formed between the machine room and the cooking cavity; and

an air inlet formed between the machine room and the cooking cavity wherein the single circuit board is positioned such that the antenna of the magnetron and the air cover of the single circuit board correspond to positions of the waveguide and the air inlet, respectively.

30. The microwave oven as set forth in claim 28, further comprising:

a waveguide formed between the machine room and the cooking cavity; and

an air inlet formed between the machine room and the cooking cavity wherein the single circuit board is positioned according to positions of the waveguide and the air inlet.

31. A microwave oven having a magnetron that generates microwaves, a magnetron driving circuit to supplies power to the magnetron and a machine room to accommodate the magnetron and the magnetron driving circuit, comprising:

a constructional unit comprising;

electronic components of the magnetron driving circuit;

the magnetron; and

a magnetron driving circuit board, the magnetron, the electronic components of the magnetron driving circuit being mounted thereon; and

mounting members to couple the constructional unit to the machine room.