KR970008070B1 - Deodorizing catalyst preparation for microwave oven - Google Patents

Deodorizing catalyst preparation for microwave oven Download PDF

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Publication number
KR970008070B1
KR970008070B1 KR1019940003221A KR19940003221A KR970008070B1 KR 970008070 B1 KR970008070 B1 KR 970008070B1 KR 1019940003221 A KR1019940003221 A KR 1019940003221A KR 19940003221 A KR19940003221 A KR 19940003221A KR 970008070 B1 KR970008070 B1 KR 970008070B1
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South Korea
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food
cooking
cooling fan
microwave oven
smell
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KR1019940003221A
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Korean (ko)
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KR950024798A (en
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박명석
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엘지전자 주식회사
구자홍
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0215—Coating
    • B01J37/0228—Coating in several steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/74—Iron group metals
    • B01J23/755—Nickel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J29/00—Catalysts comprising molecular sieves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/08—Heat treatment

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Catalysts (AREA)
  • Electric Ovens (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)

Abstract

When the food is cooked by a microwave oven, the air flow will be made differently to the rotating direction of cooling fan(40) for the food kind. If the smell ingredient of the food which users choose is alkaline, by the control of MICOM, the cooling fan rotates on the right side. So the air ventilate into the inside of cavity through an inlet port. Then the smell made by cooking is oxidized passing by the oxidation catalyzer. And the smell is transpired outer. If the food kind is acid, the cooling fan rotates on the left side, so that the outer air flows in the inside of cavity through an exhaust port. The air and the smell made by cooking are reduced passing by the restoration catalyzer, than they are transpired outer.

Description

전자레인지의 탈취장치 및 탈취촉매 제조방법Microwave Deodorizer and Deodorizing Catalyst Manufacturing Method

제 1 도는 일반적인 전자레인지 외관도.1 is a general view of the microwave oven.

제 2 도는 종래 전자레인지의 탈취장치 구성도.2 is a block diagram of a conventional microwave deodorizer.

제 3 도는 제 2 도의 각부 상세도로서,3 is a detailed view of each part of FIG.

(가)는 배기구에 부착된 촉매 확대도이고,(A) is an enlarged view of the catalyst attached to the exhaust port,

(나)는 (가)의 작용 표시도이다.(B) is operation indication chart of (a).

제 4 도는 본 발명 전자레인지 탈취장치 구성도.4 is a block diagram of the present invention microwave oven deodorizer.

제 5 도는 제 4 도의 동작 흐름도.5 is a flowchart of operation of FIG.

제 6 도는 제 4 도의 각부 상세도로서,6 is a detailed view of each part of FIG.

(가)는 환원촉매 구성도이고,(A) is a structure of reduction catalyst,

(나)는 (가)의 각부 상세도이다.(B) is a detailed view of each part of (a).

제 7 도는 본 발명 전자레인지 탈취촉매 제조공정도.7 is a process chart for manufacturing a microwave deodorization catalyst of the present invention.

제 8 도는 제 4 도의 동작 모식도로서,8 is a schematic view of the operation of FIG.

(가)는 알카리성 음식물 조리시 탈취 모식도이고,(A) is a schematic diagram of deodorization when cooking alkaline foods,

(나)는 산성 음식물 조리시 탈취 모식도이다.(B) is a schematic diagram of deodorization when cooking acidic foods.

제 9 도는 제 8 도에 따른 동작제어도.9 is an operation control diagram according to FIG.

제10도는 환원 및 산화촉매의 작용 설명도.10 is a diagram illustrating the action of a reduction and oxidation catalyst.

제11도는 본 발명에 적용되는 탈취촉매의 타 실시예의 구성도.11 is a block diagram of another embodiment of the deodorizing catalyst applied to the present invention.

제12도는 전자레인지의 냄새 배출 특성도.Figure 12 is a smell emission characteristics of the microwave oven.

제13도는 종래와 본 발명 탈취장치의 환원촉매에 대한 가스 정화특성도.13 is a gas purification characteristic of the reduction catalyst of the conventional and the present invention deodorizing apparatus.

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

10 : 키 입력수단20 : 마이콤10: key input means 20: micom

30 : 냉각팬 제어수단40 : 냉각팬30: cooling fan control means 40: cooling fan

51 : 환원촉매52 : 산화촉매51: reduction catalyst 52: oxidation catalyst

본 발명은 전자레인지의 탈취에 관한 것으로서, 특히 산화 및 환원형 촉매를 배기구에 설치하여 음식물 종류에 따라 발생된 모든 음식물 냄새를 제거하도록 한 전자레인지의 탈취장치 및 탈취촉매 제조방법에 관한 것이다.The present invention relates to a deodorization of a microwave oven, and more particularly, to a deodorizing device and a method for producing a deodorizing catalyst of a microwave oven to remove all food odor generated according to the type of food by installing an oxidation and reduction catalyst in the exhaust port.

종래 전자레인지의 탈취장치는 제1,제2 도에 도시한 바와 같이 마그네트론(6)에서 발진한 마이크로파에 의해 음식물을 조리하는 캐비티부(1)와, 상기 마그네트론(6)의 동작시간과 출력을 사용자가 선택된 음식물의 종류에 따라 자동으로 조정하는 마이콤(2)과, 상기 캐비티부(1)를 개폐하는 도어(3)와, 상기 도어(3)의 개폐를 용이하게 하는 도어개폐 버튼(4)과, 일련의 조리과정을 눈으로 확인가능하도록 상기 캐비티부(1) 내부를 밝혀주는 램프(5)와, 상기 마그네트론 트랜스등의 전장부를 냉각함과 아울러 조리중 수증기를 흡입구를 통해 송풍하므로 도어(3)에 발생되는 이슬 맺힘을 방지하는 냉각팬(12)과, 상기 냉각팬(12)의 구동으로 수증기 및 음식물 냄새를 제거하여 밖으로 배출하도록 배기구에 설치한 산화형 촉매(13)로 구성되어 있다.In the conventional microwave deodorizer, as shown in FIGS. 1 and 2, the cavity unit 1 for cooking food by microwaves generated from the magnetron 6, and the operation time and output of the magnetron 6 A microcomputer 2 for automatically adjusting according to the type of food selected by the user, a door 3 for opening and closing the cavity 1, and a door opening and closing button 4 for easily opening and closing the door 3. And a lamp 5 illuminating the inside of the cavity part 1 so that a series of cooking processes can be visually checked, and cooling the electric parts of the magnetron transformer and the like, and blowing steam during cooking through a suction port. It consists of a cooling fan 12 to prevent dew condensation generated in 3), and an oxidized catalyst 13 installed at an exhaust port to remove steam and food odors and to discharge it out by driving the cooling fan 12. .

이와같이 구성된 종래 전자레인지 탈취 시스템의 작용은 제1 내지 제3 도에 도시한 바와 같이 도어개폐 버튼(4)을 눌러 도어(3)를 개방한 후, 캐비티부(1) 내부에 조리할 음식물을 넣고 마아콤(2)에서 음식물 종류를 선택한 후 "동작시작" 버튼을 누르면 마그네트론(6)에서 마이크로파가 발진하여 음식물을 일정시간 가열시켜 조리가 완성된다.The function of the conventional microwave deodorization system configured as described above is to open the door (3) by pressing the door opening and closing button (4) as shown in Figures 1 to 3, and then put food to be cooked inside the cavity (1) After selecting the type of food in the maacomb (2) and press the "start operation" button, microwaves are generated in the magnetron 6 to heat the food for a certain time to complete the cooking.

이때 냉각팬(12)은 마그네트론(6), 트랜스등의 전장부를 냉각시키고, 캐비티 내부(1)로 송풍되어 조리중 발생하는 수증기 및 조리 음식물 조리 냄새가 배기구를 통해 산화형 촉매를 거쳐 밖으로 배출된다.At this time, the cooling fan 12 cools the electric parts such as the magnetron 6 and the transformer, and is blown into the cavity 1 so that the steam and cooking food cooking odor generated during cooking are discharged out through the oxidizing catalyst through the exhaust port. .

그러나 음식물중 조리 냄새 성분이 알카리성 일때에는 다음 반응식 1,2와 같이 산화촉매에 의해 산화분해되어 제거되지만,However, when the cooking odor component of the food is alkaline, it is oxidized and removed by an oxidation catalyst as in the following Reaction Equation 1, 2,

·(CH3)3N(생선냄새)+O2→CO2+H2O+CH3NO2식 1(CH 3 ) 3 N (fish odor) + O 2 → CO 2 + H 2 O + CH 3 NO 2 Formula 1

·NH3(육류냄새)+O2→N2+H2O식 2NH 3 (Meat Smell) + O 2 → N 2 + H 2 O Formula 2

조리성분이 산성일 경우는 그대로 배출되어 조리 냄새에 의해 불쾌감을 줄뿐만 아니라 주방등 주택 실내를 오염시키는 문제점이 있었다.When the cooking ingredient is acidic, it is discharged as it is, not only gives a discomfort by the cooking smell, but also has a problem of polluting the interior of the house, such as the kitchen.

따라서 본 발명은 산화형 및 환원형 촉매를 장착하고 냉각팬이 선택된 음식물 냄새 종류에 따라 냉각팬의 회전방향이 조절되도록 마이콤에 입력시켜, 음식물 종류에 따라 냄새 정화에 적합한 촉매의 방향으로 배기하여 모든 종류의 냄새를 효과적으로 제거하도록 한 전자레인지의 탈취장치 및 탈취촉매 제조방법을 제공함에 있다.Therefore, the present invention is equipped with an oxidation type and a reduction type catalyst and the cooling fan is input to the microcomputer so that the rotation direction of the cooling fan is adjusted according to the selected food odor type, exhausted in the direction of the catalyst suitable for odor purification according to the food type The present invention provides a deodorizing apparatus and a deodorizing catalyst manufacturing method of a microwave oven to effectively remove odors of a kind.

이와 같은 본 발명의 목적을 달성하기 위한 수단은 요리 종류에 따른 사용자의 키 입력에 의해 조리시 발생되는 음식물의 산성 및 알카리성 냄새를 판단하여 냉각팬의 회전 방향을 제어하는 마이콤과, 상기 마이콤의 제어에 의해 회전하는 냉각팬의 회전방향에 따라 음식물 조리시 발생한 모든 냄새를 제거하는 탈취촉매로 이루어지므로서 달성된다.Means for achieving the object of the present invention is a microcomputer for controlling the rotation direction of the cooling fan by determining the acidic and alkaline smell of the food generated when cooking by the user's key input according to the type of cooking, the control of the microcomputer It is achieved by consisting of a deodorizing catalyst for removing all the odor generated during food cooking according to the rotation direction of the cooling fan to rotate by.

본 발명의 또다른 목적을 달성하기 위한 방법은 알카리 토류금속과 제오라이트를 혼합하여 담체위에 워쉬코트 재료로서 코팅한 후 건조하여 그 위에 활성물질을 재코팅한 후 건조하는 공정과, 상기 코팅한 담체를 고온에서 소성하는 공정으로 이루어짐으로서 달성되는 것으로, 이하 본 발명을 첨부한 도면에 의거 상세히 설명하면 다음과 같다.Another method for achieving the object of the present invention is a process of mixing the alkaline earth metal and zeolite as a washcoat material on the carrier and then drying the coating and drying the active material thereon and drying the coated carrier It is achieved by the step of firing at a high temperature, described in detail below with reference to the accompanying drawings of the present invention.

제4,제 6 도는 본 발명 전자레인지의 탈취장치 및 탈취촉매 구성도로서 이에 도시한 바와 같이 사용자에 의해 가열조건 및 요리의 종류등을 선택하는 키 입력수단(10)과, 상기 키 입력수단(10)에서 얻어진 요리의 종류에 따라 산성 및 알카리성의 음식물 조리 냄새를 판단하는 마아콤(20)과, 상기 마아콤(20)의 제어에 따라 냉각팬(40)의 회전 방향을 제어하는 냉각팬 제어수단(30)과, 냉각팬(40)의 회전 방향에 따라 산성 및 알카리성의 음식물 조리 냄새를 각각 탈취하도록 배기구 및 흡입구에 각각 장착한 산화 및 환원형 촉매(52)(51)로 구성한다.4 and 6 are diagrams illustrating a deodorizing device and a deodorizing catalyst of the microwave oven according to the present invention. As shown therein, key input means 10 for selecting a heating condition and a type of cooking by the user, and the key input means ( Control the cooling fan 40 to control the rotation direction of the cooling fan 40 in accordance with the control of the malacomb 20 and judging by the control of the malacomb (20) to determine the acid and alkaline food cooking smell according to the type of cooking obtained in 10) The means 30 and oxidation and reduction catalysts 52 and 51 mounted on the exhaust port and the intake port, respectively, to deodorize the acidic and alkaline food cooking odors in accordance with the rotational direction of the cooling fan 40, respectively.

여기서 환원형 촉매(51)는 하니컴(Honey Comb)형 촉매로서, 담체(Al2O3-SiO2)위에 워쉬코트(wash caat) 재료로서 코팅하여 저온탈취성능 강화 및 담체와의 접착성을 향상시키는 제오라인트 및 알카리 토류 금속(Mg,Sr)의 혼합물(51a)과 환원반응을 촉진시키도록 상기 워쉬코트 재료로서 혼합물 코팅한 담체위에 CaO와 NiO를 혼합하여 재코팅한 활성물질(51b)로 구성한다.Here, the reduced catalyst 51 is a honeycomb type catalyst and is coated on a carrier (Al 2 O 3 -SiO 2 ) as a wash coat material to enhance low temperature deodorization performance and improve adhesion to the carrier. Composed of a mixture 51a of zeolite and alkaline earth metal (Mg, Sr) and an active material (51b) remixed with CaO and NiO on a carrier coated with the mixture as the washcoat material to promote a reduction reaction. do.

이와 같이 구성한 본 발명의 작용, 효과를 제4 내지 제13도를 참조하여 상세히 설명하면 다음과 같다.The operation and effects of the present invention configured as described above will be described in detail with reference to FIGS. 4 to 13 as follows.

제 8 도에 도시한 바와 같이 전자레인지에 의한 음식물 조리시 음식물 종류에 따른 냉각팬(40)의 회전 방향에 따라 공기흐름(Air flow)이 각기 달리 형성한다.As illustrated in FIG. 8, air flows are formed differently according to the rotation direction of the cooling fan 40 according to the type of food when cooking food by a microwave oven.

즉 사용자가 선택한 음식물의 조리 냄새 성분이 알카리성 음식물일 경우 마이콤의 제어에 의해 제 8 도(나)에 도시한 바와 같이 냉각팬이 오른쪽으로 회전하여 흡입구를 통해 캐비티 내부로 송풍되어 조리중 발생한 냄새가 산화촉매를 거쳐 산화분해되어 밖으로 배출되고, 사용자가 선택한 음식물 종류가 산성 음식물일 경우는 냉각팬이 왼쪽으로 회전하여 공기가 바깥쪽에서 배기구를 통해 캐비티 내부로 유입되어 조리중 발생하는 냄새와 함께 환원촉매(51)를 거쳐 아래 반응식 3,4와 같이 환원 분해되어 밖으로 배출된다.That is, if the cooking odor component of the food selected by the user is alkaline food, the cooling fan is rotated to the right as shown in FIG. If the food type selected by the user is acidic food, the cooling fan is rotated to the left, and the air flows into the cavity through the exhaust port from the outside, and the reduction catalyst is accompanied by the odor generated during cooking. After (51), it is reductively decomposed and discharged out as shown in the following Reactions 3 and 4 below.

·CH3SH(양파류, 콩나물등)+N2→HCOOH식 3CH 3 SH (onion, bean sprouts, etc.) + N 2 → HCOOH

·CH3COOH(양념류, 간장, 된장등)+CO2→H2O식 4CH 3 COOH (spices, soy sauce, miso, etc.) + CO 2 → H 2 O Formula 4

제6,제 7 도는 환원촉매 구성도 및 제조방법의 흐름도로서 이에 도시한 바와 같이 비표면적을 높혀 저온 탈취성능을 강화하기 위해 제오라이트(Zelite)와 담체와의 접착성을 향상시키기 위한 담체와 극성이 다른 알카리 토류금속(Mg,Sr)을 혼합하여 담체(Al2O3-SiO2)위에 워쉬코트 재료로 코팅한 후 건조시킨다.6 and 7 are flowcharts of the structure of the reduction catalyst and the manufacturing method thereof, as shown in FIG. 6, to increase the specific surface area and to enhance the low temperature deodorization performance, thereby improving the adhesion between the zeolite and the carrier. Another alkaline earth metal (Mg, Sr) is mixed and coated with a washcoat material on a carrier (Al 2 O 3 -SiO 2 ) and dried.

이때 제오라이트와 알카리 토류금속(Mg,Sr)의 무게비는 100 : 55~80(Wt%)로 하고, 건조는 90℃에서 4시간 동안 수행한다.At this time, the weight ratio of zeolite and alkaline earth metal (Mg, Sr) is 100: 55 ~ 80 (Wt%), and drying is carried out for 4 hours at 90 ℃.

상기 혼합물을 워쉬코트 재료로 코팅한 담체위에 활성물질로서 CaO, NiO를 혼합하여 재코팅하고 150℃에서 2시간 동안 건조후 다시 360℃에서 2시간 동안 고온 소성하므로서 환원촉매를 제조하게 된다.The mixture is coated and recoated with CaO and NiO as an active material on a carrier coated with a washcoat material, dried at 150 ° C. for 2 hours, and calcined at 360 ° C. for 2 hours to prepare a reduction catalyst.

제12도는 냄새배출 특성도로서 이에 도시한 바와 같이 조리 냄새가 알카리성 음식물(칼치 생선찌게등)의 경우는 (CH3)3N 기준시 냄새 발생 지수가 비슷한 수준이나 산성 음식물(콩나물 데치기등)의 경우는 CH3SH 기준시 냄새 발생 지수가 매우 낮다.FIG. 12 is a characteristic of odor emission. As shown in the figure, in case of alkaline foods (such as cutlet fish crab), the level of odor generation index is similar to that of (CH 3 ) 3 N, but acidic foods (such as boiled bean sprouts) are shown. Odor generation index is very low in the case of CH 3 SH.

제13도는 본 발명의 환원촉매 장착시에 대한 가스 정화실험 결과 특성도로서 이에 도시한 바와 같이 실험 조건은 공간속도(SV)=40.000(h-1), CH3SH=10PPm이며, 상기 조건에서 산성성분(CH3SH)의 정화성능은 종래 대비하여 저온에서 정화 성능이 우수하다.FIG. 13 is a characteristic diagram of a result of gas purification experiment when the reduction catalyst is mounted according to the present invention. As shown in the drawing, the experimental conditions are space velocity (SV) = 40.000 (h −1 ) and CH 3 SH = 10PPm. Purification performance of the acidic component (CH 3 SH) is excellent in the purification performance at low temperatures compared to the conventional.

제11도는 본 발명 전자레인지 탈취장치의 타 실시예 구성도로서 이에 도시한 바와 같이 종래 전자레인지의 탈취장치의 배기구 측면에 산화 및 환원촉매를 횡방향으로 일렬 구성하므로서, 쉽게 산화되는 환원 생성물의 가역 반응을 방지하기 위해 냉각팬에 의해 형성된 공기흐름이 산화촉매를 거쳐 알카리 성분의 음식물 냄새를 제거하고, 이어서 환원촉매를 거쳐 산성 음식물 냄새를 제거하므로서 조리중 발생하는 산성 및 알카리성의 모든 음식물 조리 냄새를 제거하게 된다.11 is a configuration diagram of another embodiment of the microwave deodorizer of the present invention, as shown in this figure, by reversing the oxidation and reduction catalysts in the transverse direction in the side of the exhaust port of the conventional microwave deodorizer, thereby reversing the easily oxidized reduction product. In order to prevent the reaction, the air flow formed by the cooling fan removes the food odors of the alkaline component through the oxidation catalyst and then removes the acidic food odor through the reduction catalyst, thereby removing all the food cooking odors generated during cooking. Will be removed.

이상에서 상세히 설명한 바와 같이 산화, 환원촉매를 배기구 또는 흡입구에 장착하고, 선택된 음식물 종류에 따른 산성 및 알카리성의 음식물 조리 냄새를 마이콤이 판단하여 냉각팬 제어하므로서 발생한 각종 음식물 조리 냄새를 정화할 수 있는 효과가 있다.As described in detail above, the oxidation and reduction catalysts are installed in the exhaust port or the inlet port, and the effects of being able to purify the various food cooking odors generated by controlling the cooling fan by determining the acid and alkaline food cooking odor according to the selected food type. There is.

Claims (4)

알칼리 토류금속과 제오라이트를 혼합하여 담체위에 워쉬코트 재료로 코팅한 후 건조하는 공정과, 상기 혼합물 코팅후 그위에 활성물질을 재코팅한 후 건조하고 고온에서 소정시간 소성하는 과정으로 이루어짐을 특징으로 한 전자레인지의 탈취촉매 제조방법.Mixing alkaline earth metal and zeolite, coating the carrier with a washcoat material and drying the carrier, and then coating the mixture and recoating the active material thereon, followed by drying and baking at a high temperature for a predetermined time. Deodorization catalyst production method of microwave oven. 제 1 항에 있어서, 알카리 토류금속과 제오라이트의 혼합비는 100 : 55~80(Wt%)인 것을 특징으로 한 전자레인지의 탈취촉매 제조방법.The method of claim 1, wherein the mixing ratio of the alkaline earth metal and zeolite is 100: 55-80 (Wt%). 제1항에 있어서, 활성물질은 "CaO"와 "NiO"의 혼합물로 이루어짐을 특징으로 한 전자레인지의 탈취 촉매 제조방법.The method of claim 1, wherein the active material is a mixture of "CaO" and "NiO". 제 1 항에 있어서, 소성공정은 360℃ 고온에서 두시간 동안 가열함을 특징으로 한 전자레인지의 탈취촉매 제조방법.The method of claim 1, wherein the firing process is a microwave oven deodorizing catalyst manufacturing method characterized in that the heating for 2 hours at a high temperature of 360 ℃.
KR1019940003221A 1994-02-23 1994-02-23 Deodorizing catalyst preparation for microwave oven KR970008070B1 (en)

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