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US 8,803,051 B2Granted
Microwave oven
AssigneeLG Electronics Inc.
InventorsSang-Ryul Lee, Kyu-Young Kim, Jae-Myung Chin, Dong-Han Kim, Si-Young Choi, Sung-Ho Choi
Life of this patent
Estimating the term…
Abstract
A microwave oven includes a cavity having a cooking chamber; a magnetron oscillating microwave radiation used for cooking food in the cooking chamber; and a plurality of radiation openings through which the microwave radiation is radiated into the cooking chamber, each of the radiation openings having a length in a direction where the microwave radiation is guided by a waveguide, the length being greater or less than λ/4.
Claims13
A microwave oven comprising:
- a cavity having a cooking chamber;
- a magnetron that oscillates microwave radiation used for cooking food in the cooking chamber;
- and
- first and second radiation openings through which the microwave radiation is radiated into the cooking chamber and formed on one surface of the cavity, each of the first and second radiation openings having a length in a direction where the microwave radiation is guided by a waveguide, the length of the first radiation opening being greater than λ/4 or the length of the second radiation opening being less than λ/4,
- wherein the second radiation opening overlaps an antenna of the magnetron in a length direction of the antenna.
2 more elements
A microwave oven comprising:
- a cavity having a cooking chamber;
- a magnetron having an antenna that oscillates microwave radiation used for cooking food in the cooking chamber;
- a waveguide to guide microwave radiation oscillated from the magnetron to the cooking chamber and having an antenna opening in which the antenna is inserted;
- a first radiation opening through which the microwave radiation is radiated into the cooking chamber, the first radiation opening having a length in a direction where the microwave radiation is guided by the waveguide, the length being greater than λ/4;
- and
- a second radiation opening through which the microwave radiation is radiated into the cooking chamber, the second radiation opening having a length in a direction where the microwave radiation is guided by the waveguide, the length being less than λ/4,
- wherein a distance between the first and second radiation openings in a length direction of the waveguide is a mean value of the lengths of the first and second radiation openings,
- wherein the second radiation opening overlaps the antenna opening in a length direction of the antenna.
5 more elements
A microwave oven comprising:
- a cavity having a cooking chamber;
- a magnetron that oscillates microwave radiation used for cooking food in the cooking chamber;
- a first radiation opening through which the microwave radiation guided by a waveguide is radiated into the cooking chamber;
- and
- a second radiation opening through which the microwave radiation guided by the waveguide is radiated into the cooking chamber,
- wherein lengths of the first and second radiation openings in a length direction of the waveguide and a distance between the first and second radiation openings in the length direction of the waveguide are nλ/8 (n is an integer),
- wherein the second radiation opening overlaps an antenna of the magnetron in a length direction of the antenna.
4 more elements
Dependencies are inferred from the claim text.