KR20000033875A - Microwave oven having apparatus for stabilizing initial temperature - Google Patents

Microwave oven having apparatus for stabilizing initial temperature Download PDF

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Publication number
KR20000033875A
KR20000033875A KR1019980050929A KR19980050929A KR20000033875A KR 20000033875 A KR20000033875 A KR 20000033875A KR 1019980050929 A KR1019980050929 A KR 1019980050929A KR 19980050929 A KR19980050929 A KR 19980050929A KR 20000033875 A KR20000033875 A KR 20000033875A
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KR
South Korea
Prior art keywords
temperature
microwave oven
cooking
cooking chamber
fan motor
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Application number
KR1019980050929A
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Korean (ko)
Inventor
노현주
Original Assignee
전주범
대우전자 주식회사
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Priority to KR1019980050929A priority Critical patent/KR20000033875A/en
Publication of KR20000033875A publication Critical patent/KR20000033875A/en

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    • 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
    • H05B6/66—Circuits
    • H05B6/68—Circuits for monitoring or control
    • 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
    • H05B6/642—Cooling of the microwave components and related air circulation systems
    • 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
    • H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
    • H05B6/645—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using temperature sensors
    • 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
    • H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
    • H05B6/6458—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using humidity or vapor sensors
    • 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
    • H05B6/647—Aspects related to microwave heating combined with other heating techniques
    • H05B6/6482—Aspects related to microwave heating combined with other heating techniques combined with radiant heating, e.g. infrared heating

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)

Abstract

PURPOSE: A microwave oven having an apparatus for stabilizing initial temperature is provided to improve cooking performance by operating a microwave oven in regular ambient temperature of a humidity sensor. CONSTITUTION: A thermistor(52) firstly detects the temperature of a cooking chamber(30) if a command to start cooking is inputted to a microwave oven. The ambient temperature of a sensor(16) falls with a fan motor(56) to keep the temperature of the microwave oven regular about 25°C. Also, the temperature rises with a heater(54) if it is lower than 25°C. Therefore, the ambient temperature of the sensor is always kept regular about 25°C before the microwave oven is started.

Description

초기온도안정화장치를 구비한 전자렌지Microwave Oven with Initial Temperature Stabilizer

본 발명은 전자렌지에 관한 것으로, 특히 초기온도를 안정화시킴으로써 습도센서의 기능을 최적화한 전자렌지에 관한 것이다.The present invention relates to a microwave oven, and more particularly to a microwave oven that optimizes the function of the humidity sensor by stabilizing the initial temperature.

도 1은 통상적인 습도센서가 내장된 전자렌지의 내부구성을 보여주기 위한 개략도이다.Figure 1 is a schematic diagram showing the internal configuration of a microwave oven in which a conventional humidity sensor is built.

도 1에 도시된 바와 같이, 일반적으로 습도센서를 이용하여 자동조리 동작을 제어해 주는 전자렌지에서 전장실(10) 내에는 고압 트랜스포머(11)가 마그네트론(12)에 고압전기를 인가할 때 마그네트론(12)으로부터 초고주파가 발생되며, 상기 초고주파에 의하여 조리실(30) 내에 형성되는 조리실 내부에 있는 음식물이 가열된다.As shown in FIG. 1, in a microwave oven that controls an automatic cooking operation using a humidity sensor, a magnetron is applied when a high voltage transformer 11 applies a high voltage electricity to the magnetron 12 in the electric compartment 10. Ultra-high frequency is generated from the (12), the food in the cooking chamber formed in the cooking chamber 30 is heated by the ultra-high frequency.

한편, 가열된 음식물로부터 수증기가 발생하게 되며, 상기 수증기는, 팬모터(14)의 송풍작용에 의하여 조리실(30)의 제1측벽(31)의 상부에 형성된 제1 송풍구들(311)로부터 흘러나와서 제1 측벽(31)의 맞은편에 배치된 제2측벽(32)의 하부에 형성된 제1 배기구들(321)과 제1 배출구들(325)을 차례로 흘러가는 공기의 흐름을 따라서 배출된다. 또한, 상기 수증기는, 조리실(30)의 천정부(33)의 중앙부에 형성된 제2 배기구들(331), 풍로(333) 및 제2 배출구들(335)을 차례로 흘러가는 공기의 흐름을 따라서 배출된다. 이 때, 풍로(333)를 따라서 배출되는 수증기의 에너지는 제2 배출구들(335)의 입구에 부착된 습도센서(16)에 의하여 감지되므로 가열시간이 적절히 조절되어서 자동조리동작이 제어된다.Meanwhile, water vapor is generated from the heated food, and the water vapor flows from the first air holes 311 formed on the first side wall 31 of the cooking chamber 30 by the blowing action of the fan motor 14. It is discharged along the flow of air which in turn flows through the first exhaust ports 321 and the first outlets 325 formed under the second side wall 32 disposed opposite the first side wall 31. In addition, the steam is discharged along the flow of air flowing through the second exhaust ports 331, the air path 333, and the second outlets 335 which are formed in the center of the ceiling 33 of the cooking chamber 30. . At this time, the energy of the water vapor discharged along the air path 333 is sensed by the humidity sensor 16 attached to the inlet of the second outlets 335, so that the heating time is appropriately adjusted so that the automatic cooking operation is controlled.

전자렌지에 의한 조리작업은, 조리실(30) 내에 음식물을 넣고서 스타트버튼을 누름과 동시에 초고주파에 의한 음식물의 가열이 시작된다. 음식물의 가열과 함께 발생되는 습도량을 습도센서(16)가 센싱하고 이에 따라 가열시간이 적절히 결정되게 된다.In the cooking operation by the microwave, the food is put into the cooking chamber 30, the start button is pressed, and the heating of the food by the ultra-high frequency starts. The humidity sensor 16 senses the amount of humidity generated with the heating of the food, and the heating time is appropriately determined.

그런데 이 습도센서의 센싱동작은 주변온도에 영향을 받게되며 따라서 총조리시간이 차이가 발생하게 되어 주변온도가 가변함에 따라 조리상태가 다소 과해지거나 부족해지는 문제점이 있었다.However, the sensing operation of the humidity sensor is affected by the ambient temperature, and thus, the total cooking time is different, resulting in a problem that the cooking state becomes somewhat excessive or insufficient as the ambient temperature varies.

이와 같은 본 발명의 기술적 과제는 습도센서 주변의 온도를 항상 일정하게 유지시킨 상태에서 전자렌지가 동작할 수 있도록 제어함으로써 보다 향상된 조리기능을 가지는 초기온도 안정화장치를 구비한 전자렌지를 제공하고자 한다.The technical problem of the present invention is to provide a microwave oven having an initial temperature stabilization device having a more improved cooking function by controlling the microwave oven to operate at a constant temperature around the humidity sensor at all times.

본 발명은 상기와 같은 목적을 달성하기 위해 안출된 것으로, 본 발명의 전자렌지는, 습도센서 주변에 설치된 온도감지부, 전자렌지의 조리실 내부를 가열하기 위한 히터, 전자렌지의 조리실 내부의 온도를 하강시키기 위하여 설치된 팬모터, 조리시작시 고주파 발진동작 전에 조리실 내부의 온도를 항상 일정하게 유지시키기 위하여 상기 온도감지부의해 측정된 온도가 기준온도보다 높은 경우에는 팬모터를 가동시키고 측정된 온도가 기준온도보다 낮은 경우에는 히터를 가동시키는 제어부를 가지는 초기온도 안정화장치를 구비한 전자렌지를 제공하는데 있다.The present invention has been made to achieve the above object, the microwave oven of the present invention, the temperature sensing unit installed around the humidity sensor, the heater for heating the inside of the cooking chamber of the microwave oven, the temperature inside the cooking chamber of the microwave oven Fan motor installed for lowering, to keep constant the temperature inside the cooking chamber before the high frequency oscillation operation at the start of cooking, if the temperature measured by the temperature sensing unit is higher than the reference temperature, start the fan motor and measure the temperature If the temperature is lower than the present invention to provide a microwave oven having an initial temperature stabilization device having a control unit for operating the heater.

도 1은 통상적인 습도센서가 내장된 전자렌지의 내부구성을 보여주기 위한 개략도;1 is a schematic diagram showing the internal configuration of a microwave oven incorporating a conventional humidity sensor;

도 2는 본 발명의 초기온도 안정화장치가 내장된 전자렌지의 내부구성을 보여주기 위한 개략도;Figure 2 is a schematic diagram for showing the internal configuration of a microwave oven built-in initial temperature stabilization device of the present invention;

도 3은 도 2의 초기온도 안정화장치의 동작 순서도이다.3 is a flowchart illustrating an operation of the initial temperature stabilization apparatus of FIG. 2.

〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

10 : 전장실 12 : 마그네트론10: battlefield room 12: magnetron

14 : 팬모터 16 : 습도센서14: fan motor 16: humidity sensor

30 : 조리실 31 : 제1 측벽30: cooking chamber 31: first side wall

32 : 제2 측벽 33 : 천정부32: second sidewall 33: ceiling

321 : 제1 배기구 331 : 제2 배기구321: first exhaust port 331: second exhaust port

333 : 풍로 335 : 제2 배출구333: wind furnace 335: second outlet

50 : 마이콤 52 : 써미스터50: Micom 52: Thermistor

54 : 히터 56 : 팬모터54: heater 56: fan motor

이하, 본 발명의 전자렌지의 바람직한 실시예를 첨부된 도면에 의거 상세히 설명하면 다음과 같다.Hereinafter, a preferred embodiment of the microwave oven according to the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명의 초기온도 안정화장치가 내장된 전자렌지의 내부구성을 보여주기 위한 개략도이고, 도 3은 도 2의 초기온도 안정화장치의 동작 순서도이다.Figure 2 is a schematic diagram showing the internal configuration of the microwave oven incorporating the initial temperature stabilization device of the present invention, Figure 3 is a flow chart of the operation of the initial temperature stabilization device of FIG.

도 2 내지 도 3에 도시된 바와 같이, 본 발명의 전자렌지의 전장실(10) 내에는, 습도센서(11)의 주변에 온도감지를 위한 써미서터(52)가 설치된다. 전자렌지의 조리실(30)의 상측벽에는 조리실의 내부를 가열하기 위한 히터(54)가 내장된다. 전자렌지의 조리실(30)의 상벽 또는 측벽에는 내부의 온도를 하강시키기 위하여 팬모터(56)가 설치된다. 전장실(10)의 소정위치에는, 상기 써미스터(52)의해 측정된 온도가 기준온도보다 높은 경우에는 팬모터를 가동시키고 측정된 온도가 기준온도보다 낮은 경우에는 히터(54)를 가동시키는 마이콤(50)이 설치된다.As shown in Figures 2 to 3, in the electric chamber 10 of the microwave oven of the present invention, a thermistor 52 for temperature sensing is installed around the humidity sensor 11. The heater 54 for heating the inside of the cooking chamber is built in the upper wall of the cooking chamber 30 of the microwave oven. The fan motor 56 is installed on the upper wall or the sidewall of the cooking chamber 30 of the microwave oven to lower the internal temperature. At a predetermined position of the electric compartment 10, a microcomputer for operating the fan motor when the temperature measured by the thermistor 52 is higher than the reference temperature and operating the heater 54 when the measured temperature is lower than the reference temperature ( 50) is installed.

전자렌지를 조리시작 명령이 입력되면 바로 마그네트론(12)에 의한 고주파 발진동작이 개시되지 않고 써미스터(52)를 이용하여 먼저 전자렌지 조리실(30) 내부의 온도를 먼저 감지한다. 전자렌지 내부의 온도를 개시전에 항상 25℃로 일정하게 유지시키기 위하여 25℃ 보다 높은 경우에는 팬모터(56)를 동작시켜 센서(16) 주변온도를 식히고, 25℃ 보다 낮은 경우에는 히터(54)를 동작시켜 센서(16) 주변온도를 맞추어 줌으로써 센서 주변온도를 전자렌지의 시작전에 항상 항상 25℃로 일정하도록 유지시킨다.When the microwave cooking start command is input, the high frequency oscillation operation by the magnetron 12 is not started, and the temperature of the inside of the microwave cooking chamber 30 is first detected using the thermistor 52. In order to keep the temperature inside the microwave oven constant at 25 ° C before starting, the fan motor 56 is operated to cool the ambient temperature of the sensor 16 when the temperature is higher than 25 ° C, and the heater 54 when the temperature is lower than 25 ° C. By operating the sensor 16 to adjust the ambient temperature, the sensor ambient temperature is always kept constant at 25 ° C. before the start of the microwave oven.

이상에서 상세히 설명한 바와 같이, 본 발명의 초기온도 안정화장치를 구비한 전자렌지에 의하면, 전자렌지 내부의 온도를 개시전에 기준온도보다 높은 경우에는 팬모터를 동작시키고, 기준온도보다 낮은 경우에는 히터를 동작시켜 전자렌지 내의 습도센서 주변온도를 항상 일정하게 유지시켜 줌으로써 안정적인 습도센서의 기능을 유지시킬 수 있게 되고 이리하여 전자렌지의 조리기능이 향상되게 된다.As described above in detail, according to the microwave oven provided with the initial temperature stabilizing device of the present invention, when the temperature inside the microwave is higher than the reference temperature before starting, the fan motor is operated, and when the temperature is lower than the reference temperature, the heater is operated. By maintaining the ambient temperature of the humidity sensor in the microwave oven at all times by operating, it is possible to maintain the function of the stable humidity sensor, thereby improving the cooking function of the microwave oven.

Claims (1)

습도센서 주변에 설치된 온도감지부,Temperature sensing unit installed around the humidity sensor, 전자렌지의 조리실 내부를 가열하기 위한 히터,Heater for heating the inside of the cooking chamber of the microwave oven, 전자렌지의 조리실 내부의 온도를 하강시키기 위하여 설치된 팬모터, 및A fan motor installed to lower the temperature inside the cooking chamber of the microwave oven, and 조리시작시 고주파 발진동작 전에 조리실 내부의 온도를 항상 일정하게 유지시키기 위하여 상기 온도감지부의해 측정된 온도가 기준온도보다 높은 경우에는 팬모터를 가동시키고 측정된 온도가 기준온도보다 낮은 경우에는 히터를 가동시키는 제어부로 구성됨을 특징으로 하는 초기온도 안정화장치를 구비한 전자렌지.At the start of cooking, the fan motor is operated when the temperature measured by the temperature sensing unit is higher than the reference temperature to keep the temperature inside the cooking chamber constant before the high frequency oscillation operation, and when the measured temperature is lower than the reference temperature, the heater is turned on. Microwave oven having an initial temperature stabilizer, characterized in that consisting of a control unit for operating.
KR1019980050929A 1998-11-26 1998-11-26 Microwave oven having apparatus for stabilizing initial temperature KR20000033875A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5927129A (en) * 1982-08-05 1984-02-13 Matsushita Electric Ind Co Ltd Heating cooker
KR930021026A (en) * 1992-03-11 1993-10-20 배순훈 Preheating and preheating completion detection circuit of absolute humidity sensor
KR940004264A (en) * 1992-08-10 1994-03-14 이헌조 Microwave oven with sensor reset
KR950014727A (en) * 1993-11-11 1995-06-16 이헌조 Microwave for Automatic Cooking

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5927129A (en) * 1982-08-05 1984-02-13 Matsushita Electric Ind Co Ltd Heating cooker
KR930021026A (en) * 1992-03-11 1993-10-20 배순훈 Preheating and preheating completion detection circuit of absolute humidity sensor
KR940004264A (en) * 1992-08-10 1994-03-14 이헌조 Microwave oven with sensor reset
KR950014727A (en) * 1993-11-11 1995-06-16 이헌조 Microwave for Automatic Cooking

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