KR960005695B1 - High frequency leakage-proof structure for the microwave oven - Google Patents

High frequency leakage-proof structure for the microwave oven Download PDF

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Publication number
KR960005695B1
KR960005695B1 KR1019930009681A KR930009681A KR960005695B1 KR 960005695 B1 KR960005695 B1 KR 960005695B1 KR 1019930009681 A KR1019930009681 A KR 1019930009681A KR 930009681 A KR930009681 A KR 930009681A KR 960005695 B1 KR960005695 B1 KR 960005695B1
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South Korea
Prior art keywords
high frequency
door
opening
microwave oven
frequency absorber
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KR1019930009681A
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Korean (ko)
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KR940027631A (en
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정운왕
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대우전자주식회사
배순훈
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00Heating by electric, magnetic or electromagnetic fields
    • H05B6/64Heating using microwaves
    • H05B6/76Prevention of microwave leakage, e.g. door sealings

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Abstract

The high frequency leakage-proof door structure is made by the steps of : bending the periphery of the door plate(11) to install a high frequency absorber in an opening(21) between a door plate(11) and a door screen(12); extending bent parts(11a) to close the opening(21), forming grooves(22) in the periphery of the door screen, and filling liquid phase high frequency absorber in the grooves, thereby achieving a low-cost production.

Description

제1도는 본 발명의 실시예를 나타낸 평단면도.1 is a cross-sectional view showing an embodiment of the present invention.

제2도는 제1도의 요부 확대단면도.2 is an enlarged cross-sectional view of the main portion of FIG.

제3도는 종래의 기술구성을 예시한 확대단면도.3 is an enlarged cross-sectional view illustrating a conventional technical configuration.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 도어프레임 11 : 도어플레이트10: door frame 11: door plate

12 : 도어스크린 13 : 내측판12 door door 13 inner plate

20 : 고주파 흡수체 21 : 개구부20: high frequency absorber 21: opening

22 : 홈부22: groove

[발명의 상세한 설명]Detailed description of the invention

본 발명은 전자렌지의 도어에 고주파 흡수체를 설치하여 누설되는 고주파를 흡수토록 구성함에 있어서 고주파 흡수체의 설치가 간편하면서도 상당한 원자재비를 절감할 수 있도록 한 발명에 관한 것이다.The present invention relates to an invention in which a high frequency absorber is installed in a door of a microwave oven so as to absorb high frequency leaks, so that the installation of the high frequency absorber is simple and a considerable raw material cost can be reduced.

일반적으로 전자렌지의 조리실에는 마그네트론을 설치하여 고주파를 발생하도록 구성한 것인데, 주로 전장실의 저면판에 취부된 고압트랜스의 1차 및 2차 유도코일이 상호 유도작용에 의해 생성된 고전압을 안정적으로 인가함에 따라 마그네트론이 고주파를 생성하게 된다.In general, microwave ovens are equipped with magnetrons to generate high frequency. The primary and secondary induction coils of the high voltage transformer mounted on the bottom plate of the electric room are stably applied with the high voltage generated by mutual induction. As a result, the magnetron generates high frequencies.

상기와 같이 마그네트론에서 생성된 고주파는 도파관을 통해서 조리실 내부로 조사(照射)토록 하므로서 조리실 내부에 놓여진 음식물이 조리되도록 한 것인데, 주로 조리실 입구에는 도어를 설치하여 조리시 발생되는 고주파를 효과적으로 밀폐토록 한 것이다.As described above, the high frequency generated by the magnetron allows the food placed inside the cooking chamber to be cooked by irradiating the inside of the cooking chamber through the waveguide. will be.

그런데 전자렌지의 전면에 설치되며 조리실을 개폐하도록 취부되는 도어에는 별도의 고주파 흡수체를 설치하여 고주파가 누설되는 것을 효과적으로 방지토록 구성하였는데, 종래에는 제3도에서 도시한 바와같이 도어프레임(10) 내부에 설치되는 도어플레이트(11)와 도어스크린(12) 사이에 개구부(21)를 형성하고 상기한 개구부(21) 사이에는 고주파 흡수체(20)를 끼워 설치하므로서 누설되는 고주파를 흡수토록 한 것이다.By the way, the front door of the microwave oven is installed to open and close the cooking chamber to install a separate high-frequency absorber to effectively prevent the high-frequency leakage, conventionally as shown in Figure 3 inside the door frame 10 An opening 21 is formed between the door plate 11 and the door screen 12 to be installed in the upper plate 21, and the high frequency absorber 20 is inserted between the openings 21 so as to absorb high frequency leaks.

상기한 고주파 흡수체(20)는 고주파 흡수성이 좋은 페라이트와 접착제를 혼합한 재질을 사출성형하여 도어플레이트(11)와 도어스크린(12) 사이의 개구부(21)에 탄발 삽지되도록 한 것이나, 이와같은 종래의 기술 구성은 상당한 문제점이 있는 것인바 이를 상세히 설명하면 다음과 같다.The high frequency absorber 20 is injection molding a material mixed with a ferrite and an adhesive having good high frequency absorption so as to be inserted into the opening 21 between the door plate 11 and the door screen 12. The technical configuration of the is that there is a significant problem described in detail as follows.

첫째; 상기한 고주파 흡수체(20)는 사출 성형하는 방식으로 형성하는 것이기 때문에 이에 따르는 별도의 사출 금형을 제작하는데 막대한 제작비가 소요되는 문제점이 있는 것이고, 이러한 사출 금형은 보수 유지비 또한 상당하게 소요되는 폐단이 있는 것이다.first; Since the high frequency absorber 20 is formed by injection molding, there is a problem in that a huge manufacturing cost is required to manufacture a separate injection mold according to this, and such an injection mold has a closed end that requires considerable maintenance costs. will be.

둘째; 상기와 같은 고주파 흡수체(20)는 전자렌지의 기종마다 외형 및 사이즈(size)가 다르게 형성되어 있는 것인바 기종별로 별도의 금형을 제작함에 따르는 경제적 손실 및 기종별 금형관리가 상당히 어려운 점이 있다.second; The high-frequency absorber 20 as described above is that the appearance and size (size) is formed differently for each type of microwave oven, there is a point that the economic loss and mold management for each type is quite difficult to produce a separate mold for each type.

세째; 고주파 흡수체(20)를 형성할때 페라이트와 접착제를 혼합한 재질을 사용하여 사출 성형한 것인바 재질의 특성상 쉽게 부러지는 성질이 있는 것이기 때문에 겨울철같이 주변의 온도가 낮게 분포되었을때는 고주파 흡수체(20)를 개구부(21)에 탄발 삽지시키거나 수리를 위하여 개구부(21)에서 분리할 경우에 고주파 흡수체(20)가 쉽게 부러지는 폐단이 있는 것이다.Third; When the high frequency absorber 20 is formed by injection molding using a mixture of ferrite and an adhesive, it is easily broken due to the characteristics of the material. Therefore, when the ambient temperature is distributed low in winter, the high frequency absorber 20 is used. Is inserted into the opening 21, or when the high frequency absorber 20 is easily broken when the separation from the opening 21 for repair is there is a closed end.

따라서 본 발명의 목적은 고주파 흡수체의 제작비가 적게 소요되는 동시에 설치가 간편하여 손망실이 발생하지 않는 전자렌지용 도어의 고주파 누설방지 구조를 제공하는데 있다.Accordingly, an object of the present invention is to provide a high frequency leakage prevention structure of a microwave oven door, which is easy to install due to the low manufacturing cost of the high frequency absorber.

이하 첨부된 도면에 의하여 상기한 목적을 달성할 수 있는 상세한 기술구성 및 작용효과를 설명하면 다음과 같다.Hereinafter, detailed technical configurations and operational effects that can achieve the above object by the accompanying drawings are as follows.

즉, 본 발명은 도어프레임(10) 내부에 설치되는 도어플레이트(11)와 도어스크린(12) 사이의 개구부(21)에 고주파 흡수체를 삽지시킨 도어에 있어서 도어플레이트(11)에 절곡부(11a)를 연장 형성하여 개구부(21)가 막혀지게 하고 도어스크린(12)의 외주연에는 홈부(22)를 절곡 형성한 후 이에 페라이트와 수지를 혼합한 액상의 고주파 흡수체(20)를 함입시킨 것이다.That is, the present invention is a bent portion (11a) in the door plate 11 in the door in which the high frequency absorber is inserted into the opening 21 between the door plate 11 and the door screen 12 installed inside the door frame 10 ) Is formed so that the opening 21 is blocked and the groove 22 is bent at the outer periphery of the door screen 12, and then the liquid high frequency absorber 20 mixed with ferrite and resin is embedded therein.

도면중 미설명 부호(13)은 도어스크린(12)에 부착되는 내측판이고, (30)은 전장실이다.In the figure, reference numeral 13 denotes an inner plate attached to the door screen 12, and 30 denotes an electric compartment.

이와같이 형성된 본 발명은 종래와 같이 별도로 사출 성형된 고주파 흡수체(20)를 개구부(21)에 삽지시키는 것이 아니라 도어스크린(12)의 외주연에 절곡 형성된 홈부(22)에 페라이트와 수지를 혼합시킨 고주파 흡수체(20)를 함입시킨후 건조시키기만 하면 고주파 흡수체(20)가 홈부(22)에 안정적으로 유지되는 것인바 고주파 흡수체(20)가 부러지거나 손망실되는 종래의 폐단이 방지되는 것이고, 별도의 사출 금형을 제작할 필요가 없는 것이다.The present invention thus formed does not insert the high-frequency absorber 20 separately injection-molded in the opening 21 as in the prior art, but the high frequency in which ferrite and resin are mixed in the groove part 22 bent at the outer periphery of the door screen 12. Once the absorbent body 20 is inserted and dried, the high frequency absorber 20 is stably maintained in the groove 22. Thus, the conventional closed end of the high frequency absorber 20 that is broken or lost is prevented. There is no need to make an injection mold.

따라서 상기한 바와같이 금형을 별도로 제작할 필요가 없는 본 발명은 고주파 흡수체(20)의 제조단가를 상당히 낮출 수 있는 것이므로 전체적인 전자렌지의 제작비를 절감시킬 수 있는 것이며, 전자렌지의 기종에 관계없이 도어스크린(12)의 주연홈부(22)에 고주파 흡수체(20)를 함입시키는 것인바 고주파 흡수체(20)의 설치가 매우 간편해진 것이다.Therefore, the present invention, which does not need to separately manufacture a mold as described above, can significantly reduce the manufacturing cost of the high frequency absorber 20, thereby reducing the overall manufacturing cost of the microwave oven, regardless of the model of the microwave oven. Since the high frequency absorber 20 is embedded in the peripheral groove portion 22 of 12, the installation of the high frequency absorber 20 becomes very simple.

그리고 고주파 흡수체(20)는 주로 고주파에 대해 흡수성이 뛰어난 페라이트와 수지를 혼합한 액상의 재질로 형성한 것인데, 이는 도어스크린(12)에 형성된 홈부(22)에 고주파 흡수체(20)를 용이하게 함입시키기 위함이다.In addition, the high frequency absorber 20 is mainly formed of a liquid material in which ferrite and resin are excellent in absorbing high frequency, which is easily incorporated into the groove 22 formed in the door screen 12. To do so.

상기한 도어플레이트(11)의 절곡부(11a)를 연장 형성토록 하여 고주파 흡수체(20)가 삽지되는 개구부(21)가 막혀지게 하므로서 필요가 없게 된 개구부(21)를 차폐하여 고주파가 누설되는 것을 효과적으로 방지할 수 있도록 한 것이다.The opening part 21 of the door plate 11 is extended to be formed so that the opening part 21 into which the high frequency absorber 20 is inserted is blocked, thereby shielding the opening part 21 which is not necessary to leak the high frequency wave. It is to prevent effectively.

이상에서 상술한 바와같은 본 발명은 도어스크린(12)이 주연부에 절곡 형성된 홈부(22)에 액상의 고주파 흡수체(20)를 함입시키기만 하면 조리실(30)에서 발생되는 고주파의 누설을 효과적으로 차단시킬 수 있는 것인바 별도의 금형을 제작하는데 소요되는 제작비를 절감시킬 뿐만 아니라 고주파 흡수체(20)가 부러지는 등의 손망실을 방지할 수 있는 유용한 발명인 것이다.As described above, the present invention can effectively block the high frequency leakage generated in the cooking chamber 30 by simply injecting the liquid high frequency absorber 20 into the groove 22 formed at the periphery of the door screen 12. It will be a useful invention that can not only reduce the manufacturing cost required to manufacture a separate mold, but also prevent the loss of high frequency absorber 20, such as broken.

전자렌지용 도어의 고주파 누설 방지구조High frequency leakage prevention structure of microwave oven door

Claims (1)

전자렌지의 도어플레이트(11)와 도어스크린(12) 사이의 개구부(21)에 고주파 흡수체를 설치함에 있어서, 상기 개구부(21)를 막을 수 있도록 도어플레이트(11)의 사방 주연부를 절곡하여 절곡부(11a)를 연장 형성하고, 도어스크린(12)의 외주연에는 홈부(22)를 절곡 형성한 후 상기 홈부(22)에 액상의 고주파 흡수체(20)를 함입시켜 설치한 것을 특징으로 하는 전자렌지용 도어의 고주파 누설 방지구조.In installing the high frequency absorber in the opening 21 between the door plate 11 and the door screen 12 of the microwave oven, the bent portion is bent by bending the four peripheral edges of the door plate 11 so as to block the opening 21. And extending the groove 11a and bending the groove 22 at the outer periphery of the door screen 12, and inserting the liquid high frequency absorber 20 into the groove 22 to install the groove 22. High frequency leakage prevention structure of door.
KR1019930009681A 1993-05-31 1993-05-31 High frequency leakage-proof structure for the microwave oven KR960005695B1 (en)

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Application Number Priority Date Filing Date Title
KR1019930009681A KR960005695B1 (en) 1993-05-31 1993-05-31 High frequency leakage-proof structure for the microwave oven

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KR960005695B1 true KR960005695B1 (en) 1996-04-30

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