Electric heating – Microwave heating – Enclosed cavity structure
Patent
1996-09-26
1998-03-10
Simone, Timothy F.
Electric heating
Microwave heating
Enclosed cavity structure
99451, 99DIG14, 219756, H05B 664, H05B 680, A23L 100
Patent
active
057264295
ABSTRACT:
A microwave oven includes a cooking chamber in which either microwave cooking or hot air convection cooking can be performed. A cooling chamber is situated rearwardly of the cooking chamber for housing a motor and cooling fan. A rear cover of the cooling chamber includes air intake and air exhaust holes formed therein for circulating a cooling air flow produced by the fan. The cover includes a vertical central surface in which the air intake holes are formed, as well as additional surfaces extending obliquely forwardly from respective edges of the central surface. The additional surfaces include a top surface, a bottom surface, and right and left side surfaces. Each of those additional surfaces, except for one of the side surfaces, includes air exhaust holes. Each of the air exhaust holes includes a rearward projection extending thereabove to resist the entry of water. Each of the air intake holes includes a projection extending forwardly from an edge thereof and inclined toward a central axis of the air exhaust hole to resist the entry of foreign objects. A rearward protrusion formed on the central surface serves to space the air intake openings from a surface located adjacent to the microwave oven.
REFERENCES:
patent: 4100463 (1978-07-01), Sugie
patent: 4546225 (1985-10-01), McCammon
patent: 4582971 (1986-04-01), Ueda
patent: 4587393 (1986-05-01), Uedaq
patent: 4623771 (1986-11-01), Sakino
patent: 4743728 (1988-05-01), Nagafusa et al.
patent: 4812617 (1989-03-01), Takeuji
patent: 5393961 (1995-02-01), Umekage
Samsung Electronics Co,. Ltd.
Simone Timothy F.
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