WO2012005316A1 - 電子レンジ - Google Patents
電子レンジ Download PDFInfo
- Publication number
- WO2012005316A1 WO2012005316A1 PCT/JP2011/065532 JP2011065532W WO2012005316A1 WO 2012005316 A1 WO2012005316 A1 WO 2012005316A1 JP 2011065532 W JP2011065532 W JP 2011065532W WO 2012005316 A1 WO2012005316 A1 WO 2012005316A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetron
- time
- microwave
- microwave oven
- start time
- Prior art date
Links
Images
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
- H05B6/66—Circuits
- H05B6/68—Circuits for monitoring or control
- H05B6/687—Circuits for monitoring or control for cooking
-
- 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
- H05B6/666—Safety circuits
-
- 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
- H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
- H05B2206/04—Heating using microwaves
- H05B2206/043—Methods or circuits intended to extend the life of the magnetron
Definitions
- the present invention relates to a microwave oven equipped with a magnetron.
- Patent Document 1 A conventional microwave oven is disclosed in Patent Document 1.
- This microwave oven has a heating chamber for storing food, and is provided with a magnetron that oscillates upon application of voltage to generate microwaves. Microwaves generated by the magnetron are supplied to the heating chamber, and the cooked food stored in the heating chamber is cooked.
- the microwave oven is provided with a timer that measures the magnetron drive time.
- the magnetron driving time measured by the timer is accumulated and stored. When the cumulative driving time of the magnetron exceeds a predetermined replacement time, it is determined that the life of the magnetron has been approached and the replacement time is notified by the display unit or the like.
- FIG. 7 shows statistical data on the lifetime of the magnetron.
- the vertical axis represents the cumulative failure rate F (t) (unit:%), and the horizontal axis represents the cumulative drive time (unit: h).
- the cumulative defect rate indicates how much of the magnetron has reached its life and has failed with respect to the cumulative drive time of the magnetron.
- the time when 1% of the magnetron reaches the end of its life is set as the replacement time (for example, 1000 hours).
- the replacement time for example, 1000 hours.
- An object of the present invention is to provide a microwave oven that can reduce running costs.
- the present invention provides a heating chamber for storing a cooked food, a magnetron that generates a microwave that is oscillated by application of a voltage and is supplied to the heating chamber, and a microwave that is generated by the magnetron.
- a radio wave sensor to detect, a timer for measuring an oscillation start time from when a voltage is applied to the magnetron until a microwave is detected by oscillation by the radio wave sensor, and an informing unit for informing the replacement time of the magnetron, When the start time becomes longer than a predetermined time, the notification by the notification unit is performed.
- the timer starts timing.
- the magnetron oscillates by applying a voltage
- a microwave is generated.
- the microwave is detected by the radio wave sensor
- the oscillation start time from the magnetron voltage application to the oscillation is measured by the timer.
- Microwaves generated by the magnetron are supplied to the heating chamber to cook the food.
- the notification unit notifies the magnetron that it is time to replace it.
- the present invention stores the oscillation start time, and performs notification by the notification unit when the oscillation start time becomes longer than the predetermined time continuously a plurality of times. It is said.
- the present invention is characterized in that the microwave oven having the above-described configuration has a plurality of the magnetrons, and each of the magnetrons oscillates in different phases. According to this configuration, the plurality of magnetrons oscillate at different phases, and the radio wave sensor detects the microwaves at different timings according to each magnetron.
- the driving time of the magnetron is measured by the timer, the oscillation start time and the cumulative driving time of the magnetron are stored, and the oscillation starting time and the cumulative driving time are read out. It is characterized by having made it possible.
- the driving time is measured by the timer.
- the magnetron drive time is accumulated and stored, and the oscillation start time from voltage application to oscillation is stored.
- the operator can read and acquire the accumulated drive time and the oscillation start time by a predetermined operation. Accordingly, it is possible to estimate the drive time until the magnetron replacement time is reached based on the statistical data acquired in advance.
- a radio wave sensor for detecting a microwave is provided, and when the oscillation start time from the application of the magnetron voltage to the detection of the microwave by the radio wave sensor is longer than a predetermined time, the replacement time is notified. Therefore, the magnetron can be used until the oscillation start time becomes longer due to deterioration. Therefore, the replacement frequency of the magnetron can be lowered and the running cost of the microwave oven can be reduced.
- the front view which shows the microwave oven of embodiment of this invention Front sectional drawing which shows the inside of the microwave oven of embodiment of this invention
- Side surface sectional drawing which shows the electromagnetic wave sensor of the microwave oven of embodiment of this invention
- the block diagram which shows the structure of the microwave oven of embodiment of this invention
- the flowchart which shows operation
- FIG. 1 is a perspective view showing a microwave oven according to an embodiment.
- a door 3 for opening and closing the heating chamber 2 (see FIG. 2) is disposed on the front surface of the microwave oven 1.
- the door 3 is provided with a window portion 3 a for visually confirming the inside of the heating chamber 2.
- An operation panel 4 is disposed on the side of the door 3.
- the operation panel 4 is provided with an operation unit 5 and a display unit 6.
- the operation unit 5 has a plurality of keys and a touch panel provided on the display unit 6, and performs a cooking menu selection operation, an instruction to start cooking, and the like.
- the display unit 6 includes a liquid crystal panel or the like, and displays an operation screen by the operation unit 5 and a cooking progress status.
- the display unit 6 constitutes a notification unit that displays a message or the like for the user and notifies the user.
- FIG. 2 is a front sectional view showing the inside of the microwave oven 1.
- the cooked food W is arranged on the bottom plate 2c of the heating chamber 2 that opens at the front.
- a plurality of magnetrons 7 that oscillate when voltage is applied to generate microwaves are disposed on the side of the heating chamber 2.
- the magnetron 7 and the heating chamber 2 are connected by a waveguide 8.
- the microwave generated by the magnetron 7 is guided through the waveguide 8 and supplied to the heating chamber 2.
- An antenna chamber 9a is provided below the bottom plate 2c, and an antenna 9 that rotates by driving of the antenna motor 10 is disposed.
- the microwave supplied to the heating chamber 2 is made uniform by the rotation of the antenna 9.
- a radio wave sensor 11 for detecting microwaves is provided on one side wall 2a of the heating chamber 2.
- FIG. 3 is a side sectional view of the radio wave sensor 11.
- the radio wave sensor 11 has a front plate 11 a and a back plate 11 b, and is disposed in a recess 2 b provided on the side wall 2 a of the heating chamber 2.
- the back plate 11b is attached to the bottom surface of the recess 2b, and the recess 2b is closed by the front plate 11a, and the radio wave sensor 11 protrudes from the front plate 11a into the heating chamber 2.
- FIG. 4 is a block diagram showing the configuration of the microwave oven 1.
- a control unit 12 that controls each unit is provided on the back surface of the operation panel 4 (see FIG. 1).
- a power supply unit 13, magnetron 7, antenna motor 10, radio wave sensor 11, operation unit 5, display unit 6, storage unit 14, timer 15, and input / output unit 16 are connected to the control unit 12.
- the power supply unit 13 supplies power to the control unit 12 and supplies power to each unit of the microwave oven 1 under the control of the control unit 12.
- storage part 14 consists of RAM and ROM, and stores the cooking sequence database of the microwave oven 1, and memorize
- Timer 15 measures the driving time and cooking time of the magnetron 7.
- the input / output unit 16 can connect to an external device to rewrite the cooking sequence stored in the storage unit 14 and read data.
- FIG. 5 is a flowchart showing the operation of the microwave oven 1.
- the process waits until the cooking menu is selected by the operation unit 5 in step # 11.
- the process waits until an instruction to start cooking is given by the operation unit 5 in step # 12.
- the magnetron 7 and the antenna motor 10 are driven by applying a voltage from the power supply unit 13 under the control of the control unit 12 in step # 13. At this time, the plurality of magnetrons 7 are driven with different phases. In step # 14, the time measurement by the timer 15 is started.
- step # 15 it waits until the radio wave sensor 11 detects the microwave. At this time, since each magnetron 7 is driven at a different phase, the radio wave sensor 11 detects microwaves at different timings with respect to each magnetron 7. Therefore, the magnetron 7 that is the oscillation source of the microwave detected by the radio wave sensor 11 can be specified.
- step # 16 the oscillation start time from the voltage application measured by the timer 15 until the radio wave sensor 11 detects the microwave is stored in the storage unit 14 for each magnetron 7.
- step # 17 the timer 15 waits until the cooking end time is reached. At the end of cooking, the magnetron 7 and the antenna motor 10 are stopped in step # 18.
- step # 19 the accumulated drive time obtained by accumulating the drive time of the magnetron 7 measured by the timer 15 is stored in the storage unit 14. That is, the current drive time is added to the accumulated drive time during the previous cooking and stored in the storage unit 14.
- step # 20 it is determined whether or not the oscillation start time for each magnetron 7 stored in step # 16 is longer than a predetermined time.
- FIG. 6 shows an example of the relationship between the accumulated driving time of the magnetron and the oscillation start time.
- the vertical axis is the oscillation start time (unit: second), and the horizontal axis is the cumulative drive time (unit: time).
- the oscillation start time from the voltage application to the magnetron to the oscillation increases almost linearly due to the deterioration due to the cumulative drive. For this reason, the statistics of the oscillation start time when the magnetron 7 reaches the lifetime is acquired in advance, and the oscillation start time reaches a predetermined time (for example, 4.5 seconds) shorter than the oscillation start time at the lifetime. Then, it is determined that it is time to replace the magnetron 7.
- a predetermined time for example, 4.5 seconds
- step # 21 the user is notified that it is time to replace the magnetron 7 by displaying a message on the display unit 6, displaying a warning icon, or the like. Thereby, the user can exchange the magnetrons 7 having different lifetimes depending on individual differences in a state in which the deterioration has progressed. In addition, you may alert
- the oscillation start time and the accumulated drive time of the magnetron 7 stored in the storage unit 14 are read out by an operator such as a serviceman via the input / output unit 16.
- an operator such as a serviceman via the input / output unit 16.
- the replacement time can be predicted by comparing the data read from the storage unit 14 with the statistical data to estimate the driveable time of the magnetron 7 until the oscillation start time reaches the predetermined time. Thereby, for example, when replacement of one magnetron 7 is near, the replacement work can be reduced by replacing them at the same time, and the convenience of the microwave oven 1 can be improved.
- the radio wave sensor 11 for detecting the microwave is provided, and is exchanged when the oscillation start time from the voltage application of the magnetron 7 to the detection of the microwave by the radio wave sensor 11 by oscillation is longer than a predetermined time. Since the timing is notified, the magnetron 7 can be used until the oscillation start time becomes longer due to deterioration. Therefore, the replacement frequency of the magnetron 7 can be lowered and the running cost of the microwave oven 1 can be reduced.
- step # 20 the process proceeds to step # 21 when the oscillation start time reaches the predetermined time continuously a plurality of times. May be. Thereby, replacement of the magnetron 7 due to erroneous detection of the oscillation start time can be prevented.
- the plurality of magnetrons 7 oscillate at different phases, it is possible to detect whether or not each magnetron 11 oscillates by one radio wave sensor 11, and the number of parts can be reduced.
- the oscillation start time and the accumulated drive time of the magnetron 7 are stored in the storage unit 14 and the oscillation start time and the accumulated drive time can be read out via the input / output unit 16, the time until the life of the magnetron 7 is predicted.
- the convenience of the microwave oven 1 can be improved.
- a plurality of magnetrons 7 are provided, but a microwave oven having one magnetron 7 may be used.
- the radio wave sensor 11 is provided in the heating chamber 2, it may be provided in the waveguide 8 or the antenna chamber 9a. However, it is more desirable to provide the radio wave sensor 11 in the heating chamber 2 because the completion time of thawing can be determined by detection of the radio wave sensor 11 when the food is thawed.
- whether or not the magnetron 7 has reached the replacement time is determined based on the oscillation start time, but the life time and the oscillation start time differ depending on the type of the magnetron 7. At this time, it is preferable to set the oscillation start time, which is determined as the replacement time, within a time period in which the influence on cooking is small.
- the present invention can be used for a microwave oven equipped with a magnetron.
Abstract
Description
2 加熱室
3 扉
4 操作パネル
5 操作部
6 表示部
7 マグネトロン
8 導波管
9 アンテナ
10 アンテナモータ
11 電波センサ
12 制御部
13 電源部
14 記憶部
15 タイマー
16 入出力部
Claims (4)
- 調理物を収納する加熱室と、電圧の印加により発振して前記加熱室に供給されるマイクロ波を発生するマグネトロンと、前記マグネトロンにより発生するマイクロ波を検出する電波センサと、前記マグネトロンの電圧印加から発振によってマイクロ波を前記電波センサで検出するまでの発振開始時間を計測するタイマーと、前記マグネトロンの交換時期を報知する報知部とを備え、前記発振開始時間が所定時間よりも長くなった際に前記報知部による報知を行うことを特徴とする電子レンジ。
- 前記発振開始時間を記憶し、複数回連続して前記発振開始時間が前記所定時間よりも長くなった際に前記報知部による報知を行うことを特徴とする請求項1に記載の電子レンジ。
- 前記マグネトロンを複数有し、各前記マグネトロンが異なる位相で発振することを特徴とする請求項1または請求項2に記載の電子レンジ。
- 前記タイマーによって前記マグネトロンの駆動時間を計測して前記発振開始時間及び前記マグネトロンの累積駆動時間を記憶し、前記発振開始時間及び前記累積駆動時間を読出し可能にしたことを特徴とする請求項1または請求項2に記載の電子レンジ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011800315631A CN102960059A (zh) | 2010-07-09 | 2011-07-07 | 微波炉 |
AU2011274876A AU2011274876B2 (en) | 2010-07-09 | 2011-07-07 | Microwave oven |
JP2012523913A JP5624137B2 (ja) | 2010-07-09 | 2011-07-07 | 電子レンジ |
US13/703,700 US9271339B2 (en) | 2010-07-09 | 2011-07-07 | Microwave oven |
EP11803650.8A EP2592900A1 (en) | 2010-07-09 | 2011-07-07 | Microwave oven |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010-156504 | 2010-07-09 | ||
JP2010156504 | 2010-07-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012005316A1 true WO2012005316A1 (ja) | 2012-01-12 |
Family
ID=45441293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/065532 WO2012005316A1 (ja) | 2010-07-09 | 2011-07-07 | 電子レンジ |
Country Status (6)
Country | Link |
---|---|
US (1) | US9271339B2 (ja) |
EP (1) | EP2592900A1 (ja) |
JP (1) | JP5624137B2 (ja) |
CN (1) | CN102960059A (ja) |
AU (1) | AU2011274876B2 (ja) |
WO (1) | WO2012005316A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015119287A1 (ja) * | 2014-02-10 | 2015-08-13 | シャープ株式会社 | 電子レンジ |
JP2015148423A (ja) * | 2014-02-10 | 2015-08-20 | シャープ株式会社 | 電子レンジ |
CN106465490A (zh) * | 2014-07-10 | 2017-02-22 | 松下知识产权经营株式会社 | 微波加热装置 |
Families Citing this family (8)
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US10085584B2 (en) * | 2014-06-09 | 2018-10-02 | Whirlpool Corporation | Method of regulating temperature for sous vide cooking and apparatus therefor |
CN104879801B (zh) * | 2015-06-08 | 2017-07-07 | 广东美的厨房电器制造有限公司 | 微波饭煲 |
WO2017164290A1 (ja) * | 2016-03-25 | 2017-09-28 | パナソニックIpマネジメント株式会社 | マイクロ波加熱装置 |
JP1562586S (ja) | 2016-06-01 | 2016-11-07 | ||
US10383183B2 (en) * | 2016-12-05 | 2019-08-13 | Hall Labs Llc | Microwave oven with oscillating magnetron |
JP1599562S (ja) | 2017-09-28 | 2018-03-12 | ||
CN109661056B (zh) * | 2018-12-17 | 2021-06-22 | 京信通信系统(中国)有限公司 | 一种微波设备 |
CN111615230B (zh) * | 2020-05-13 | 2022-06-10 | 广东美的厨房电器制造有限公司 | 微波家电的控制方法、装置、微波家电和电子设备 |
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2011
- 2011-07-07 CN CN2011800315631A patent/CN102960059A/zh active Pending
- 2011-07-07 AU AU2011274876A patent/AU2011274876B2/en not_active Ceased
- 2011-07-07 JP JP2012523913A patent/JP5624137B2/ja not_active Expired - Fee Related
- 2011-07-07 WO PCT/JP2011/065532 patent/WO2012005316A1/ja active Application Filing
- 2011-07-07 US US13/703,700 patent/US9271339B2/en not_active Expired - Fee Related
- 2011-07-07 EP EP11803650.8A patent/EP2592900A1/en not_active Withdrawn
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015119287A1 (ja) * | 2014-02-10 | 2015-08-13 | シャープ株式会社 | 電子レンジ |
JP2015148423A (ja) * | 2014-02-10 | 2015-08-20 | シャープ株式会社 | 電子レンジ |
US10524318B2 (en) | 2014-02-10 | 2019-12-31 | Sharp Kabushiki Kaisha | Microwave oven |
CN106465490A (zh) * | 2014-07-10 | 2017-02-22 | 松下知识产权经营株式会社 | 微波加热装置 |
JPWO2016006249A1 (ja) * | 2014-07-10 | 2017-04-27 | パナソニックIpマネジメント株式会社 | マイクロ波加熱装置 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2012005316A1 (ja) | 2013-09-05 |
JP5624137B2 (ja) | 2014-11-12 |
AU2011274876A1 (en) | 2013-01-10 |
CN102960059A (zh) | 2013-03-06 |
US9271339B2 (en) | 2016-02-23 |
AU2011274876B2 (en) | 2014-07-24 |
EP2592900A1 (en) | 2013-05-15 |
US20130087555A1 (en) | 2013-04-11 |
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