Cooling and exhaust system of dual electric oven

• US 8,584,663 B2
• Filed: 08/21/2008
• Issued: 11/19/2013
• Est. Priority Date: 08/24/2007
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Wan Soo, Nam, Hyeun Sik, Yang, Jae Kyung, Kwag, Dong Seong, Cho, Seong Ho
• Primary Examiner(s): McAllister, Steven B
• Assistant Examiner(s): MASHRUWALA, NIKHIL P
• Application Number:
  US12/230,025
• Publication Number:
  US 20090050130A1
• Time in Patent Office: 1,916 Days
• Field of Search: 126/21.A, 126/193, 126/198, 126/214, 219/757, 219/400
• US Class Current: 126/21.A
• CPC Class Codes: F24C 15/006 Arrangements for circulation of cooling air
• CPC Class Codes: F24C 15/2007 from oven cavities

Abstract

A cooling and exhaust system of a dual oven has upper and lower ovens, in which, in one aspect, an installation structure of a cooling fan and an exhaust structure provided for respectively cooling and exhausting the upper and lower ovens may be integrated into a simplified structure having common components to increase the manufacturing productivity. In another aspect, fans provided at the upper and lower ovens may be independently controlled to operate at different speeds according to a desired operation to maximize the cooling efficiency.

Claims

1. A cooling and exhaust system of a dual oven, the system comprising:

a front frame including a first louvered air inlet associated with an upper oven, a second louvered air inlet associated with a lower oven, which has a same structure as the upper oven, and an exhaust outlet;

a cover case including an exhaust passage, the exhaust passage connecting an exhaust duct at a rear of the dual oven and the exhaust outlet;

a first fan directing cooling air through the first louvered air inlet and directing hot air exhausted from the upper oven into the exhaust duct;

a second fan directing cooling air through the second louvered air inlet and directing hot air exhausted from the lower oven into the exhaust duct, wherein the first fan and the second fan are positioned in the same configuration at the rear of each oven, respectively, and thereby vertically aligned with one another;

a fan controller, wherein the fan controller is configured to control the first fan to operate at a high speed relative to the speed of the second fan during a self-cleaning operation of the upper oven and the first fan to operate at a low speed relative to the speed of the second fan during a self-cleaning operation of the lower oven;

a first partition plate provided at an inlet side of the first fan to separate the cooling air introduced from the first louvered air inlet and the hot air exhausted from the upper oven;

a second partition plate, which is angled, provided at an outlet side of the first fan to separate the cooling air and the hot air exhaust separated by the first partition plate and directed to the exhaust duct through the first fan;

a third partition plate provided at an inlet side of the second fan to separate the cooling air introduced from the second louvered air inlet and the hot air exhausted from the lower oven; and

a fourth partition plate provided vertically at an outlet side of the second fan to separate the cooling air and the hot air exhausted separated by the third partition plate and directed to the exhaust duct through the second fan.