KR19980025604A - Microwave - Google Patents
Microwave Download PDFInfo
- Publication number
- KR19980025604A KR19980025604A KR1019960043819A KR19960043819A KR19980025604A KR 19980025604 A KR19980025604 A KR 19980025604A KR 1019960043819 A KR1019960043819 A KR 1019960043819A KR 19960043819 A KR19960043819 A KR 19960043819A KR 19980025604 A KR19980025604 A KR 19980025604A
- Authority
- KR
- South Korea
- Prior art keywords
- food
- waveguide
- microwave oven
- uniformly
- electric
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/70—Feed lines
- H05B6/707—Feed lines using waveguides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/02—Stoves or ranges heated by electric energy using microwaves
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/165—Auxiliary devices for rotating the plane of polarisation
- H01P1/17—Auxiliary devices for rotating the plane of polarisation for producing a continuously rotating polarisation, e.g. circular polarisation
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/70—Feed lines
- H05B6/704—Feed lines using microwave polarisers
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
- Waveguides (AREA)
- Electric Ovens (AREA)
Abstract
본 발명는 전자레인지에 관한 것으로, 종래에는 도파관에서 직선편파가 발생하여 음식물을 균일하게 가열하지 못하는 문제점이 있었으며, 본 발명은 시간적으로 전계의 방향이 계속적으로 변하는 원편파가 도파관에서 방사되어 음식물을 가열하게 됨으로써 음식물을 균일하게 가열할 수 있다.The present invention relates to a microwave oven, and in the related art, a linear polarization occurs in a waveguide so that food cannot be heated uniformly. By doing so, the food can be uniformly heated.
Description
본 발명은 전자레인지에 관한 것으로, 특히 도파관 내에 유전체를 삽입하여 원편파를 발생하도록 구성하여 음식물을 균일하게 가열할 수 있는 전자레인지에 관한 것이다.The present invention relates to a microwave oven, and more particularly, to a microwave oven capable of uniformly heating food by inserting a dielectric into a waveguide to generate circular polarization.
도1은 일반적인 전자레인지의 구조를 나타낸 단면도로서, 이에 도시된 바와같이 마그네트론(1)에서 마이크로파를 발생하고 그 마이크로파는 도파관(2)에 의해 안내되어 오븐 공동(3)의 턴테이블(4)에 얹혀있는 음식물을 가열하게 된다.1 is a cross-sectional view showing the structure of a general microwave oven, as shown therein, which generates microwaves in the magnetron 1, which are guided by the waveguide 2 and placed on the turntable 4 of the oven cavity 3. The food is heated.
도 2는 단면이 a×b인 도파관의 사시도로서, 이 a, b에 의해 결정되는 직선편파가 도파관(2)에서 방사되어 음식물을 가열하게 되는데 그 직선편파의 전자계의 방향은 항상 일정하다.Fig. 2 is a perspective view of a waveguide having a cross section a × b, in which the linearly polarized waves determined by the a and b are radiated from the waveguide 2 to heat the food, but the direction of the electromagnetic field of the linearly polarized waves is always constant.
도 3은 직선편파의 전계(E)의 방향과 피가열물, 즉 음식물의 전기쌍극자(a)(b)(c)를 도시한 것으로, 직선편파의 전계(E)의 방향은 어느 한 방향으로 일정한 반면 음식물의 전기쌍극자(a)(b)(c)는 임의의 방향으로 무분별하게 배열되어 있다.3 shows the direction of the electric field E of the linearly polarized wave and the electric dipoles (a) (b) (c) of the object to be heated, that is, the food. The direction of the electric field E of the linearly polarized wave is in either direction. While constant, the electric dipoles (a) (b) (c) of the food are arranged indiscriminately in any direction.
한편, 유전가열의 원리에 따르면 음식물이 가열되는 정도는 음식물의 전기쌍극자가 받는 힘에 의해 결정되고 그 힘은 음식물에 가해지는 전계의 방향에 좌우되므로 도 3에 도시된 전계의 방향이 E1이라고 한다면 전기쌍극자 (c)가 가장 큰 힘을 받고 (b)는 힘을 받지 않는다.On the other hand, according to the principle of dielectric heating, the degree to which the food is heated is determined by the force received by the electric dipole of the food and the force depends on the direction of the electric field applied to the food, so that the direction of the electric field shown in FIG. The electric dipole (c) receives the greatest force and (b) does not receive the force.
따라서, 음식물을 균일하게 가열하는 것이 전자레인지의 성능을 좌우하므로 상기와 같이 음식물을 가열하기 위한 가열수단으로 직선편파를 사용하면 음식물 각 부위에 따라 온도 상승이 달라지게 됨으로 인해 실질적인 균일가열이 어려워 지는 문제점이 있다.Therefore, since heating the food uniformly affects the performance of the microwave oven, when linear polarization is used as the heating means for heating the food as described above, it becomes difficult to substantially uniformly heat the temperature by varying the temperature depending on each part of the food. There is a problem.
상기 문제점을 해결하기 위한 본 발명은 도파관에서 방사되는 전자기파의 전계의 방향을 다양하게 변화시킴으로써 음식물 전기쌍극자의 방향에 관계없이 균일하게 음식물을 가열할 수 있는 것을 목적으로 한다.The present invention for solving the above problems is to change the direction of the electric field of the electromagnetic wave radiated from the waveguide in various ways to be able to heat the food uniformly regardless of the direction of the food electric dipole.
도 1은 일반적인 전자레인지의 구조를 나타낸 단면도.1 is a cross-sectional view showing the structure of a typical microwave oven.
도 2는 단면이 a×b인 도파관의 사시도2 is a perspective view of a waveguide with a × b cross section;
도 3은 전자기파의 방향과 전기쌍극자의 방향을 나타낸 도.3 shows the direction of electromagnetic waves and the direction of an electric dipole;
도 4는 본 발명 전자레인지의 도파관의 사시도.4 is a perspective view of a waveguide of the present invention microwave oven.
＊도면의 주요부분에 대한 부호의 설명＊＊ Description of symbols for main parts of the drawings ＊
1:마그테크론2:도파관1: Magtechron 2: Waveguide
3:공동4:턴테이블3: joint 4: turntable
5:음식물6:구획판5: food 6: compartment
상기 목적을 달성하기 위한 본 발명은 도 4와 같이 전자파가 진행되는 방향으로 도파관 내부공간을 둘로 구분하는 유전체로 된 구획판(6)을 설치하여 음식물이 있는 공동에 원편파(circular polarized wave)가 방사되게 구성된 것으로, 이의 작용을 설명하면 다음과 같다.In order to achieve the above object, the present invention provides a circular polarization wave in a cavity in which food is installed by installing a partition plate 6 made of a dielectric that divides the internal space of the waveguide into two in the direction in which the electromagnetic wave proceeds. It is configured to be radiated, the operation of which is described as follows.
George L. Ragan의 'MICROWAVE TRANSMISSION CIRCUIT', sec 6.18∼6.19에 나타난 바와같이 마그네트론에 의해 발생된 전자기파가 도파관에 의해 안내될때 상기 도파관 내부에 전자기파가 진행하는 방향으로 도파관의 내부 단면을 둘로 구획하는 유전체 판을 설치하면, 전계의 방향이 계속적으로 변화하는 원편파가 발생하여 그 도파관 외부로 방사된다.As shown in George L. Ragan's 'MICROWAVE TRANSMISSION CIRCUIT', sec. When the plate is installed, circular polarization in which the direction of the electric field is continuously changed is generated and radiated outside the waveguide.
방사된 원편파의 전계가 시간이 t1일때 도 3의 E1방향이고 t2일때는 E2, t3일때는 E3로 변한다고 가정하면, t1일때는 방향이 E1이므로 전기쌍극자(c)가 가장 큰 힘을 받고 t2일때는 방향이 E2이므로 전기쌍극자(a)가, t3일때는 방향이 E3이므로 전기쌍극자(b)가 가장 큰 힘을 받는다.Assuming that the electric field of the radiated circular polarization changes to E1 in FIG. When t2, the direction is E2, so the electric dipole a has the greatest force.
따라서 상기와 같이 힘을 최대로 받는 전기 쌍극자가 달라지므로 불균일하게 배열된 각각의 전기쌍극자가 골고루 가열되어 각 전기 쌍극자가 받는 힘을 시간에 대하여 평균해 보면 전체적으로 균일해진다.Therefore, as described above, since the electric dipoles that receive the maximum force are different, each of the non-uniformly arranged electric dipoles is uniformly heated, so that when the average of the force received by each electric dipole with respect to time, the overall uniformity.
또한, 상기 도파관 내부를 구획하는 구획판(6)은 저항막 이나 페라이트 등의 자성체 또는 λ/4 길이의 도체판 등을 사용할 수도 있다.As the partition plate 6 partitioning the inside of the waveguide, a magnetic material such as a resistive film or ferrite, or a conductor plate having a length of? / 4 may be used.
따라서, 본 발명은 시간적으로 전계의 방향이 계속적으로 변하는 원편파가 도파관에서 방사되어 음식물을 가열함으로써 균일하게 음식물을 가열할 수 있게 된다.Therefore, in the present invention, circular polarization, in which the direction of the electric field continuously changes over time, is radiated from the waveguide, thereby heating food.
Claims (1)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960043819A KR100237641B1 (en) | 1996-10-04 | 1996-10-04 | Microwave oven |
| GB9720971A GB2318039A (en) | 1996-10-04 | 1997-10-02 | Microwave oven with circularly polarised radiation |
| JP9270753A JPH10134955A (en) | 1996-10-04 | 1997-10-03 | Wave guide for microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960043819A KR100237641B1 (en) | 1996-10-04 | 1996-10-04 | Microwave oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19980025604A true KR19980025604A (en) | 1998-07-15 |
| KR100237641B1 KR100237641B1 (en) | 2000-01-15 |
Family
ID=19476129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960043819A KR100237641B1 (en) | 1996-10-04 | 1996-10-04 | Microwave oven |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH10134955A (en) |
| KR (1) | KR100237641B1 (en) |
| GB (1) | GB2318039A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1319036B1 (en) * | 1999-11-03 | 2003-09-23 | Technology Finance Corp Pro Pr | DIELECTRIC HEATING DEVICE |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4126835A (en) * | 1977-06-20 | 1978-11-21 | Ford Motor Company | Balanced phase septum polarizer |
| US4301347A (en) * | 1980-08-14 | 1981-11-17 | General Electric Company | Feed system for microwave oven |
| GB8501440D0 (en) * | 1985-01-21 | 1985-02-20 | Era Patents Ltd | Circularly polorizing antenna feed |
| US4613836A (en) * | 1985-11-12 | 1986-09-23 | Westinghouse Electric Corp. | Device for switching between linear and circular polarization using rotation in an axis across a square waveguide |
-
1996
- 1996-10-04 KR KR1019960043819A patent/KR100237641B1/en not_active IP Right Cessation
-
1997
- 1997-10-02 GB GB9720971A patent/GB2318039A/en not_active Withdrawn
- 1997-10-03 JP JP9270753A patent/JPH10134955A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB2318039A (en) | 1998-04-08 |
| JPH10134955A (en) | 1998-05-22 |
| GB9720971D0 (en) | 1997-12-03 |
| KR100237641B1 (en) | 2000-01-15 |
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