RU2008137844A

RU2008137844A - MICROWAVE

Info

Publication number: RU2008137844A
Application number: RU2008137844/09A
Authority: RU
Inventors: Валерий Степанович Жилков (UA); Валерий Степанович Жилков
Original assignee: Валерий Степанович Жилков (UA); Валерий Степанович Жилков
Priority date: 2008-09-22
Filing date: 2008-09-22
Publication date: 2010-03-27
Also published as: RU2393650C2

Abstract

1. Микроволновая печь, представляющая собой устройство для тепловой обработки продуктов питания энергией микроволнового поля, содержащее камеру нагрева, снабженную дверкой, микроволновый генератор, расположенный в имеющем общую стенку с камерой нагрева корпусе электронного блока, и модуль возбуждения, установленный в выполненном в задней стенке отверстии связи для ввода микроволновой энергии, представляющий из себя отрезок коаксиальной линии, к выходу которого подключена одноэлементная полосковая антенна, возбуждающая в полости камеры ЭМП с круговой поляризацией; камера нагрева и корпус электронного блока механически и электрически разъемно соединены с помощью замков, излучение микроволновой энергии из щелей в местах соединения камеры и корпуса электронного блока экранировано дроссельным фильтром, установленным по всему периметру общей стенки; согласно изобретению в устройстве для тепловой обработки энергией микроволнового поля в качестве возбудителя ЭМП в камере нагрева используется 2-элементная полосковая антенна, возбуждающая в полости камеры ЭМП с круговой поляризацией, подключенная через отверстие в задней стенке камеры и сориентированная в полости камеры так, что продольная ось симметрии антенны, в направлении которой она излучает электромагнитную энергию , совпадает с «диагональю ребра» - прямой, соединяющей точку, делящую пополам линию изгиба задней стенки камеры, совпадающую с поперечной осью симметрии антенны, с точкой, делящей пополам ребро «двугранного угла», образованного криволинейной поверхностью дверки и поверхностью нижней стенки камеры. ! 2. Устройство по п.1, отличающееся т�1. A microwave oven, which is a device for heat treatment of food products with microwave energy, comprising a heating chamber equipped with a door, a microwave generator located in a housing of the electronic unit having a common wall with the heating chamber, and an excitation module installed in an opening made in the rear wall connection for the input of microwave energy, which is a segment of a coaxial line, to the output of which is connected a single-element strip antenna that excites in the cavity Ry EMI circularly polarized; the heating chamber and the body of the electronic unit are mechanically and electrically detachably connected using locks, microwave radiation from the slots at the junction of the chamber and the body of the electronic unit is shielded by a throttle filter installed around the entire perimeter of the common wall; according to the invention, in a device for heat treatment with microwave energy by the electromagnetic field, a 2-element strip antenna is used in the heating chamber to excite circularly polarized electromagnetic fields in the cavity of the camera, connected through an opening in the rear wall of the camera and oriented in such a way that the longitudinal axis the antenna symmetry, in the direction in which it emits electromagnetic energy, coincides with the "diagonal of the rib" - a straight line connecting the point that bisects the bending line of the rear wall of the camera, with coincides with the transverse axis of symmetry of the antenna, a point bisecting the rib "dihedral angle" formed by the curved surface of the door and the lower chamber wall surface. ! 2. The device according to claim 1, characterized in

Claims

1. A microwave oven, which is a device for heat treatment of food products with microwave energy, comprising a heating chamber equipped with a door, a microwave generator located in a housing of the electronic unit having a common wall with the heating chamber, and an excitation module installed in an opening made in the rear wall connection for the input of microwave energy, which is a segment of a coaxial line, to the output of which is connected a single-element strip antenna that excites in the cavity Ry EMI circularly polarized; the heating chamber and the body of the electronic unit are mechanically and electrically detachably connected using locks, microwave radiation from the slots at the junction of the chamber and the body of the electronic unit is shielded by a throttle filter installed around the entire perimeter of the common wall; according to the invention, in a device for heat treatment with microwave energy by the electromagnetic field, a 2-element strip antenna is used in the heating chamber to excite circularly polarized electromagnetic fields in the cavity of the camera, connected through an opening in the rear wall of the camera and oriented in such a way that the longitudinal axis symmetry of the antenna in the direction in which it emits electromagnetic energy

, coincides with the "diagonal of the rib" - a straight line connecting the point bisecting the bending line of the rear wall of the camera, coinciding with the transverse axis of symmetry of the antenna, with the point bisecting the edge of the "dihedral angle" formed by the curved surface of the door and the surface of the lower wall of the camera.

2. The device according to claim 1, characterized in that the 2-element strip antenna is made in the form of a radiator having the shape of intersecting disk edges ("compressed figure eight"), made as a unit of sheet metal with high electrical conductivity, and a screen also made of sheet metal with high electrical conductivity and fixed through a hole in the center, rigidly mechanically with good galvanic contact on the outer conductor of the coaxial segment of the coaxial waveguide transition of the CVC, each of the branches and a G8 illuminator for providing common-mode power supply is connected mechanically and galvanically at characteristic points using high-conductivity metal bushes with a shield, and the G8 symmetry center 0 is connected to the central conductor of the coaxial section of the CVC, along a rectangular waveguide with section dimensions 90 × 20 mm microwave energy is transferred from the microwave power source to the HFC.

3. The device according to claim 1, characterized in that the chamber door, the surface curvature of which is described by the equation of the parabola with a horizontal axis, is made of thin 0.3 mm thick stainless steel sheet, ~ Ѕ the door surface is perforated with openings with Ф2 mm, edges (width ~ 15 mm) around the entire perimeter, the door fits tightly with a gap of ~ 0.1 mm to the throttle filter installed inside the chamber aperture in order to shield the EMF of the working MEP; when opening and closing the chamber, the door rotates around its axis.