MICROWAVE OVEN Russian patent published in 1998 - IPC

FIELD: microwave devices. SUBSTANCE: device has upper and lower removable compartments. Lower compartment is designed as housing which contains microwave power source which is connected to metal emitter, which is designed as disk, by means of coaxial line piece. Part of housing serves as base for resonance heating chamber along which edge a metal support which is shaped as tube is welded. Said metal support is designed as tube on which microwave-transparent plate is located. Heated objects are located on this plate. Base is designed as rectangle and has adjustment screws which are connected to base with galvanic contact and are located on perpendicular to lines which run through centers of sides of rectangle. Each of them is spaced by λ/4 from base edge. Said adjustment screws are used for tuning of resonance heating chamber. Upper removable compartment is designed as finned side surface of heating chamber which is made from flexible material which conducts electric current and is shaped as tube which is extended in direction from base towards housing cap with slope of 1:10. Upper end of side surface is connected by means of cantilever screw joint which is welded to housing cap on its inner side. Lower end is connected to flange using screw joint. Fixing members are designed as struts which lower ends are connected to flange using hinge joints. Upper ends are flexibly connected to corresponding guides which are welded to inner side of cap of housing. The fact that side surface of heating chamber is made from current-conducting material, distance between its ridges is equal to λ/2, their height is λ/8, and struts are designed in this way results in possibility to fold them into housing cap when microwave oven does not function. Lower and upper removable compartments of microwave oven are connected to each other by means of clamps. In order to prevent leakage through their joint, choke connection is used. It is designed by means of upper end of metal support and flange which are folded towards flange. EFFECT: decreased size, facilitated transportation, facilitated field use. 1 dwg