# US 2018/0324906 A1 · Electric oven

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- Number: US 2018/0324906 A1
- Document ID: US20180324906A1
- Status: Published application
- Kind: A1
- Application number: 15/654,725
- Filed: 2017-07-20
- Published: 2018-11-08
- Earliest claimed: 2017-05-05
- Assignees: Guangdong Midea Kitchen Appliances Manufacturing Co., Ltd.; Midea Group Co., Ltd.
- Applicants: Guangdong Midea Kitchen Appliances Manufacturing Co., Ltd.; Midea Group Co., Ltd.
- Inventors: Chaohui Liu; Jianghua Wang
- Web page: https://patentgrep.com/patent/US20180324906A1

## CPC

- H05B 6/6411: {the supports being rotated}
- A23L 5/15: {using wave energy, irradiation, electrical means or magnetic fields, e.g. oven cooking or roasting using radiant dry heat}
- H05B 6/647: {Aspects related to microwave heating combined with other heating techniques}
- H05B 6/80: Apparatus for specific applications (stoves or ranges F24C7/02)
- A23L 5/00: Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
- H05B 6/00: Heating by electric, magnetic or electromagnetic fields
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- A23L: FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF (preservation thereof A23B)

## Abstract

The present invention provides an electric oven, including a cooking cavity, wherein a plurality of upper heating tubes are installed at a top position in the cooking cavity, and a plurality of lower heating tubes are installed at a bottom position in the cooking cavity. The solution improves the arrangement structure of the heating tubes of the electric oven in that at least one of the upper heating tubes protrudes from the horizontal plane where the other upper heating tubes are located, and/or at least one of the lower heating tubes protrudes from the horizontal plane where the other lower heating tubes are located, such that the distribution of the heating tubes is more stereoscopic, and the distribution of heat generated by the heating tubes in the cooking cavity is more uniform, and accordingly the heating uniformity is improved.

## Claims

### Claim 1

An electric oven, comprising:
a cooking cavity defined by a plurality of plates including a top plate and a bottom plate, a plurality of upper heating tubes arranged at a top position in the cooking cavity, and a plurality of lower heating tubes arranged at a bottom position in the cooking cavity, wherein
the plurality of the upper heating tubes include a first upper heating tube and a second upper heating tube, wherein the first upper heating tube is arranged closer to the top plate than the second upper heating tube; and
the plurality of the lower heating tubes include a first lower heating tube and a second lower heating tube, wherein the first lower heating tube is arranged closer to the bottom plate than the second lower heating tube.

### Claim 2

(canceled)

### Claim 3 (depends on 2)

The electric oven of claim 2, wherein the plurality of the upper heating tubes include a third upper heating plate, wherein
the first upper heating tube, the second upper heating tube and the third upper heating tube are successively, installed at the top position in the cooking cavity from front to back, the first upper heating tube and the third upper heating tube are installed in the same horizontal plane, and the installation position of the second upper heating tube is lower than those of the first upper heating tube and the third upper heating tube.

### Claim 4 (depends on 1)

The electric oven of claim 1, wherein
a height of at least one of the plurality of upper heating tubes is higher than those of the other upper heating tubes.

### Claim 5 (depends on 4)

The electric oven of claim 4, wherein the plurality of the upper heating tubes include a third upper heating plate, wherein
the first upper heating tube, the second upper heating tube and the third upper heating tube are successively installed at the top position in the cooking cavity from front to back, the first upper heating tube and the third upper heating tube are installed in the same horizontal plane, and the installation position of the second upper heating tube is higher than those of the first upper heating tube and the third upper heating tube.

### Claim 6

(canceled)

### Claim 7 (depends on 1)

The electric oven of claim 1, wherein
the first lower heating tube is opposite to the first upper heating tube, and the second lower heating tube is opposite to the third upper heating tube.

### Claim 8 (depends on 1)

The electric oven of claim 1, wherein
the first lower heating tube is opposite to a gap between the first upper heating tube and the second upper heating tube, and the second lower heating tube is opposite to a gap between the second upper heating tube and the third upper heating tube.

### Claim 9 (depends on 1)

The electric oven of claim 1, wherein
the upper heating tubes and the lower heating tubes include metal tubes, quartz tubes, lightwave tubes or far infrared tubes.

### Claim 10 (depends on 1)

The electric oven of claim 1, wherein
the upper heating tubes and the lower heating tubes are metal tubes, quartz tubes, lightwave tubes or far infrared tubes.

### Claim 11 (depends on 1)

The electric oven of claim 1, wherein
the upper heating tubes and the lower heating tubes are one or more of the following: metal tubes, quartz tubes, lightwave tubes, or far infrared tubes.

### Claim 12 (depends on 1)

The electric oven of claim 1, wherein
when three or more upper heating tubes are deployed, the horizontal distances between every two adjacent upper heating tubes are equal; and
when three or more lower heating tubes are deployed, the horizontal distances between every two adjacent lower heating tubes are equal.