CN1955556A - High frequency heating device - Google Patents
High frequency heating device Download PDFInfo
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- CN1955556A CN1955556A CN 200610137450 CN200610137450A CN1955556A CN 1955556 A CN1955556 A CN 1955556A CN 200610137450 CN200610137450 CN 200610137450 CN 200610137450 A CN200610137450 A CN 200610137450A CN 1955556 A CN1955556 A CN 1955556A
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Abstract
The present invention provides a high frequency heating device capable of providing protection to the electric member by a simple structure and estimating blockade condition by high accuracy even when the body is positioned at a blockade condition. Wherein, a heating chamber temperature thermister(33), detecting the temperature of the heating chamber(22), is provided on the air suction channel side. The mounting part(37)of the heating chamber temperature thermister(33)is provided with an air suction temperature detecting board(38), by which the air suction temperature is detected, and then the temperature of the heating chamber temperature thermister(33)is corrected by high accuracy according to the detected temperature.
Description
Technical field
The present invention relates to a kind of thermatron, more particularly, the technology that the user mode that relating to is blocked around body clogs is protected electric component.
Background technology
In existing thermatron, generally take following safeguard measure.Temperature sensor is set in the Machine Room, detected temperature of temperature sensor and predefined temperature are compared, judge body around be to be ventilation state (below become " open state ") still to be stuffy state (below be called " blocked state ").When the detected temperature of temperature sensor is higher than predefined temperature, then be judged as blocked state, change heating means thereupon, generally be to increase cooling capacity, the temperature of electric component descended (example wherein can be opened flat 10-169997 with reference to the open communique spy of Japan Patent) by the rotating speed that reduces heating-up temperature or increase blower fan.
Fig. 8, Fig. 9 show the existing thermatron shown in the above-mentioned list of references.As shown in Figure 8, body 1 inside of thermatron is provided with heating clamber 2, and the front surface of heating clamber 2 is provided with rotation gate 3 freely, that can open and close.The right side of gate 3 is provided with guidance panel 4, is provided with display unit 5 that is used for displays temperature, time and the setting key 6 that carries out cooking operation in the guidance panel 4.The rear of guidance panel 4 is provided with Machine Room 7, and the rear of Machine Room 7 is provided with and is used for cooling fan 8 that electric component is cooled off.The end face of heating clamber 2 and the inside of bottom surface are respectively equipped with and are used for upper heater 9 and following heater 10 that the food in the heating clamber 2 are heated.The right flank of heating clamber 2 is provided with the temperature sensor that is used to detect the temperature in the heating clamber 2, is specially heating clamber temperature thermistor 11.On the other hand, the back side of guidance panel 4 is provided with the control circuit board 12 of electric components such as being used for control heater 9, following heater 10, cooling fan 8, heating clamber temperature thermistor 11.Control circuit board 12 is provided with the temperature sensor of the temperature that is used to detect Machine Room 7, is specially Machine Room temperature thermistor 13.
Be operating as example with baking box below, the operational circumstances and the effect of above-mentioned thermatron is described.
At first, food is put in the heating clamber 2, set heating means, cook temperature and time by the heating setpoint key (not shown) in the operated key on the guidance panel 46, temperature setting key (not shown) and time set key (not shown), afterwards, beginning key (not shown) in the pressing operation key 6 begins to carry out cooking operation.After cooking operation begins, be energized in upper heater 9 and the following heater 10, use the control model in the micro computer (not shown) that is programmed on the control circuit board 12 that heating clamber 2 is heated.Temperature in the heating clamber 2 is detected by heating clamber temperature thermistor 11 at any time, detected temperature information is sent to and is stored in the micro computer on the control circuit board 12, by the energising/outage of upper heater 9 and following heater 10 is controlled, on the temperature of setting, heat simultaneously.In cooking beginning or after after a while, cooling fan 8 begins rotation, and body 1 outer cold air is imported, and the electric component of body 1 inside is cooled off.On the other hand, Machine Room temperature thermistor 13 temperature to Machine Room 7 in cooking beginning detects, and detected temperature information is admitted to and stores in the micro computer on the control circuit board 12.The working condition of Machine Room temperature thermistor 13 is as follows: after cooking beginning, the temperature of heating clamber 2 rises slowly, Machine Room temperature thermistor 13 is subjected to the common influence from the cooling effect of the radiant heat of heating clamber 2 and cooling fan 8 simultaneously, and its temperature also can rise.
In addition, after cooking beginning, the temperature of Machine Room temperature thermistor 13 is compared with predefined temperature (is 80 ℃ as the temperature of judging blocked state) in the given time; If the temperature of Machine Room temperature thermistor 13, judges then that body 1 is under the blocked state than predefined temperature height, therefore change the mode of heating of heating clamber 2.In general, increase cooling capacity, the temperature of electric component is descended, thereby it is protected by the rotating speed that reduces heating-up temperature or increase blower fan 8.
But, adopt the formation of above-mentioned existing thermatron, can there be following problem.Under some environment temperature around the body 1, can't correctly detect open state and blocked state by the temperature difference of Machine Room temperature thermistor 13, can produce erroneous judgement and break.In addition, blocked state also divides various states, judges all states by the temperature difference of Machine Room temperature thermistor 13 and is actually out of the question.And because special-purpose temperature thermistor need be set, manufacturing cost also can rise.
Summary of the invention
The present invention is intended to solve the above-mentioned problems in the prior art, can come blocked state is carried out the thermatron that high-precision judgement can give reliable protection to electric component by the low formation of cost thereby its purpose is to provide a kind of.
In order to solve the above-mentioned problems in the prior art, thermatron of the present invention comprises: the heating clamber of accommodating heating object; The heater that described heating object is heated; The heating clamber temperature thermistor that the temperature of described heating clamber is detected; The control device of described heater being controlled according to the detected temperatures of described heating clamber temperature thermistor; With the air-blast device that the electric component in the Machine Room is cooled off.Described heating clamber temperature thermistor is arranged on the air intake passage side of described air-blast device.
Like this, rely on heating clamber temperature thermistor itself just can detect suction temperature under the blocked state, and to the temperature correction of heating clamber.Therefore, under the prerequisite that does not cause manufacturing cost to increase, just can carry out high-precision correction to the temperature of heating clamber.
The technique effect that the present invention produces is as follows.Thermatron of the present invention is owing to rely on heating clamber temperature thermistor itself just can directly detect blocked state; and proofread and correct accordingly; therefore can reduce manufacturing cost; and it is disconnected to eliminate erroneous judgement; temperature to heating clamber also can be proofreaied and correct reliably, can carry out reliable protection to electric component.
The specific embodiment of the invention is summarized as follows.The thermatron of the 1st scheme comprises: the heating clamber of accommodating heating object; The heater that described heating object is heated; The heating clamber temperature thermistor that the temperature of described heating clamber is detected; The control device of described heater being controlled according to the detected temperatures of described heating clamber temperature thermistor; With the air-blast device that the electric component in the Machine Room is cooled off.Described heating clamber temperature thermistor is arranged on the air intake passage side of described air-blast device.Like this, dependence heating clamber temperature thermistor itself just can detect the suction temperature under the blocked state, and to the temperature correction of heating clamber, therefore, the structure very low by manufacturing cost just can carry out high-precision correction to the temperature of heating clamber.
The 2nd scheme is, described heating clamber temperature thermistor comprises temperature detection part and mounting portion, after be located at opening portion on the heating clamber and insert, the mounting portion is fixed on the heating clamber, and described mounting portion is provided with the suction temperature check-out console in temperature detection part.Like this, the suction temperature when being in blocked state just can be delivered on the heating clamber temperature thermistor accurately, thereby can carry out high-precision correction to the heating clamber temperature.
The 3rd scheme is, described control device combines heating clamber temperature thermistor and the suction temperature thermistor that detects suction temperature and is used, and by the variations in temperature of suction temperature thermistor the detected heating clamber temperature of heating clamber temperature thermistor is proofreaied and correct.Like this, the suction temperature when being in blocked state can read accurately, thereby can carry out high-precision correction to the heating clamber temperature.
The 4th scheme is, the part in air-breathing is directed on the mounting portion of heating clamber temperature thermistor.Like this, air-breathing during blocked state can be by rectification, import to heating clamber temperature thermistor place in the mode that does not produce turbulent flow.In addition, owing to can be suppressed from the radiant heat influence of heating clamber, suction temperature can be stablized, thereby can carry out high-precision correction to the temperature of heating clamber.
The 5th scheme is, before the heating beginning, the temperature of heating clamber temperature thermistor and suction temperature thermistor compared, if its temperature difference is higher than predefined temperature, the heating control model changed.Like this,, also can the state of temperature of the heating clamber after the cooking be detected, and get rid of its Temperature Influence, the temperature of heating clamber is carried out high-precision correction even carrying out continuously under the situation of cooking operation.
Description of drawings
Fig. 1 is the oblique view of the thermatron in the embodiment of the invention 1,
Fig. 2 is the sectional view of the thermatron in the embodiment of the invention 1,
Fig. 3 is the local amplification oblique drawing of the thermatron in the embodiment of the invention 1,
Fig. 4 is heating clamber temperature in the embodiment of the invention 1 and the graph of a relation between the heating clamber temperature thermistor level (temperature),
Fig. 5 is that the circuit of the embodiment of the invention 2 constitutes block diagram,
Fig. 6 is the local oblique view of the thermatron in the embodiment of the invention 3,
Fig. 7 is the mode of operation schematic diagram of the thermatron in the embodiment of the invention 4,
Fig. 8 is the front view of existing thermatron,
Fig. 9 is the oblique view of the operation part in the existing thermatron.
In the above-mentioned accompanying drawing, 22 is heating clamber, 27 is upper heater (heater), and 28 are following heater (heater), and 31 is cooling fan (air-blast device), 33 is the heating clamber temperature thermistor, 34 is the suction temperature thermistor, and 35 is control circuit board (control device), and 36 is temperature detection part, 37 is the mounting portion, and 38 is the suction temperature check-out console.
The specific embodiment
Come with reference to the accompanying drawings some embodiments of the present invention are elaborated.It is pointed out that such embodiment does not have the effect that limits the scope of the invention.
(embodiment 1)
Fig. 1 is the oblique view of the thermatron among the present invention the 1st embodiment, and Fig. 2 is the sectional view of the thermatron among the present invention the 1st embodiment.
As shown in Fig. 1, Fig. 2, body 21 inside of thermatron are provided with heating clamber 22, and the front surface of heating clamber 22 is provided with rotation gate 23 freely, that can open and close.The right side of gate 23 is provided with guidance panel 24, and front one side of guidance panel 24 is provided with the display unit 25 that is used for displays temperature, time and is used to set the operated key 26 of cooking method.The end face inside of heating clamber 22 is provided with the upper heater 27 that is planar, and the below, bottom surface is provided with following heater 28 in a tubular form.The below of the right flank of heating clamber 22 combines with the magnetron 29 that produces frequency electromagnetic waves, and magnetron 29 is driven by the frequency converter 30 that is positioned at its top.At the rear of frequency converter 30, cooling fan 31 is fixed on the backboard 32 on the body 21.Thereby the back upper place of heating clamber 22 is provided with the temperature that is used to detect heating clamber 22 it is controlled at heating clamber temperature thermistor 33 on the design temperature.At the upside of cooling fan 31, the suction temperature thermistor 34 that is used to detect suction temperature is fixed on the backboard 32 of body 21.The back side one side of guidance panel 24 is provided with control circuit board 35, is used for electric components such as upper heater 27, following heater 28, cooling fan 31, heating clamber temperature thermistor 33, suction temperature thermistor 34 are controlled.
To being described in detail of heating clamber temperature thermistor 33, Fig. 3 is the local oblique view after amplifying of the thermatron among the present invention the 1st embodiment below by Fig. 3.As shown in Figure 3, be provided with in the heating clamber temperature thermistor 33: the temperature detection part 36 of the thermistor chip (not shown) of the temperature that is used to detect heating clamber 22 is equipped with in inside; With the mounting portion 37 that is used for temperature detection part 36 is remained fixed in heating clamber 22.Mounting portion 37 is tabular, is the shape of protruding from the right flank of heating clamber 22, is also used as the suction temperature check-out console 38 that absorbs heat near the air it.And, above-mentioned heating clamber temperature thermistor 33 is configured to such structure: when the insertion of the opening portion (not shown) on being located at heating clamber 22 temperature detection part 36, when being fixed on mounting portion 37 heating clamber 22, the suction temperature check-out console 38 in the described mounting portion 37 will protrude from chamber walls.
Being operating as example with baking box below is described the operational circumstances and the effect of the thermatron in the present embodiment with reference to figure 1, Fig. 2 and Fig. 3.
At first, food is encased in the heating clamber 22, set heating means, cook temperature and time by the heating setpoint key (not shown) in the operated key on the guidance panel 24 26, temperature setting key (not shown) and time set key (not shown) then, then the start key (not shown) in the pressing operation key 26 begins to carry out cooking operation.After when cooking operation is opened, be energized in upper heater 27 and the following heater 28, utilize and heat control model in the micro computer (not shown) that is programmed on the control circuit board 35 heating clamber 22 is heated.Temperature in the heating clamber 22 is detected at any time by heating clamber temperature thermistor 33, detected temperature information is sent to and is stored in the micro computer (not shown) on the control circuit board 35, simultaneously on/off control is carried out in the energising of upper heater 27 and following heater 28, thereby on the temperature of setting, heated.
On the other hand, when beginning to cook or after after a while, cooling fan 31 also begins rotation, and body 21 outer cold airs are imported to body 21 inside, and electric component is cooled off.Though heating clamber temperature thermistor 33 is to carry out temperature detection by the temperature detection part 36 that is positioned at heating clamber 22 inboards, but in fact, owing to be arranged on the upper wall surface of heating clamber 22 after this temperature detection part 36 is loaded onto shell, therefore also be subjected to the upper wall surface temperature of heating clamber 22 and the temperature effect of the suction temperature check-out console 38 in the heating clamber temperature thermistor 33 simultaneously, so detection is the combined temp of these temperature.Like this, if suction temperature changes, the temperature that then is located at the suction temperature check-out console 38 on the heating clamber temperature thermistor 33 also is easy to be subjected to its influence and changes, such variations in temperature can make the temperature of delivering to the micro computer of control circuit board 35 from thermistor 33 change, thereby changes the temperature of heating clamber 22.
The adjustment process of heating clamber 22 is as follows.At first, in order to handle in the micro computer (not shown) of resistance change on control circuit board 35 that makes heating clamber temperature thermistor 33, its resistance change is converted into voltage earlier, is replaced as the regulation constant (grade) that micro computer can be handled again.For example, above-mentioned constant was set to 150 grades when the temperature of heating clamber 22 was set as 150 ℃, was 200 grades in the time of 200 ℃, was 250 grades in the time of 250 ℃, and was stored in the micro computer.Then, to compare by heating clamber temperature thermistor 33 detected temperature (grade) and the temperature (grade) that is stored in the micro computer of control circuit board 35, and, the temperature of heating clamber 22 is regulated by control that upper heater 27 and following heater 28 are switched on-cut off the power supply.
Fig. 4 is the schematic diagram of the relation between the grade (temperature) of expression temperature of heating clamber 22 and heating clamber temperature thermistor 33.The relation of the grade (temperature) of the temperature of heating clamber 22 and heating clamber temperature thermistor 33 when the curve a among the figure shows body 21 and is arranged to open state, the relation when curve b shows body 21 and is arranged to blocked state between the grade (temperature) of the temperature of heating clamber 22 and heating clamber temperature thermistor 33.Under blocked state, distribute nowhere from the exhaust gas heat and the hot gas of body 21, can accumulate in heating clamber temperature thermistor 33 places, so suction temperature can rise, the temperature of the suction temperature check-out console 38 of heating clamber temperature thermistor 33 also can rise.Like this, it is too high that the temperature of heating clamber 22 can be considered to, thereby carry out the operation of the temperature reduction that makes heating clamber 22, therefore, the relation of the grade (temperature) of the temperature of heating clamber 22 and heating clamber temperature thermistor 33 can be by proofreading and correct shown in curve b like that.The words that the temperature of heating clamber 22 is high, the exhaust gas heat of body 21 and hot gas (temperature) also will uprise, and therefore, suction temperature will uprise, the temperature of heating clamber temperature thermistor 33 also will uprise, and the difference between the curve a of open state and the curve b of blocked state will increase.
For instance, under open state, the grade of heating clamber temperature thermistor 33 is that the temperature of 250 grades, heating clamber 22 is under 250 ℃ the occasion, when changing blocked state into, owing to will move on the curve b, even therefore the grade of heating clamber temperature thermistor 33 still is 250 grades, the temperature of heating clamber 22 will be reduced to 230 ℃.Like this, under blocked state, by itself carrying out the temperature that temperature-compensating reduces heating clamber 22, can reduce the temperature of the electric component in the body 21, and just can protect electric component by simple formation by heating clamber temperature thermistor 33.
(embodiment 2)
Fig. 5 is the electric formation block diagram in the expression embodiment of the invention 2.Come embodiment 2 is described below in conjunction with Fig. 3, Fig. 5.Adopted following formation in the present embodiment: the heating clamber temperature thermistor 33 that will be installed in heating clamber 22 joins together to use with the suction temperature thermistor 34 that is installed on the backboard 32, and the temperature of heating clamber temperature thermistor 33 is proofreaied and correct.Particularly, after heating clamber temperature thermistor 33 and suction temperature thermistor 34 the connecting like that as shown in Figure 5, be connected with micro computer on the control circuit board 35 again.
Adopt after the above-mentioned formation, the temperature of heating clamber temperature thermistor 33 will be subjected to the Temperature Influence of suction temperature thermistor 34, therefore can proofread and correct the temperature of heating clamber temperature thermistor 33 by the variations in temperature of suction temperature thermistor 34.The operation of heating clamber temperature thermistor 33, effect are owing to identical with embodiment 1, so in the description of this omission to it.Operational circumstances and effect to suction temperature thermistor 34 is described below.After cooking operation begins, the temperature of heating clamber 22 rises gradually, extraneous air is also along with the rotation of cooling fan 31 flows into outside body 21 simultaneously, so the temperature of suction temperature thermistor 34 will become the photothermal synthesis temperature of outer temperature degree and heating clamber 22, these temperature also rise gradually, and its temperature information is sent to and is stored in the micro computer (not shown) on the control circuit board 35.
Here, heating clamber temperature thermistor 33 and suction temperature thermistor 34 are connected after back and micro computer (not shown) on the control circuit board 35 be connected, temperature will be decided by the combined temp of the temperature of the temperature of heating clamber temperature thermistor 33 and suction temperature thermistor 34, this combined temp can be subjected to the influence of suction temperature thermistor 34, so can proofread and correct by suction temperature thermistor 34.The effect of this moment is owing to identical with the effect of the embodiment 1 shown in Fig. 4, so in the description of omitting it.Because its suction temperature can rise when body 21 was in blocked state, so the temperature of suction temperature thermistor 34 also can rise, its result causes the temperature of heating clamber temperature thermistor 33 also can rise.Reduce the temperature of heating clamber 22 by carrying out temperature correction, the electric component temperature of body 21 inside also can reduce, and can protect electric component by simple formation.In addition, because means for correcting is a suction temperature thermistor 34, so can carry out high-precision correction.
(embodiment 3)
Fig. 6 is the local oblique view of the thermatron among the present invention the 3rd embodiment.As shown in Figure 6, near the mounting portion 37 of heating clamber temperature thermistor 33, be provided with air guide member 40, this air guide member 40 is for being 2 flat boards of L shape, 1 face wherein is provided with blow vent 39, the face that has blow vent 39 is located at heating clamber 22 1 sides, and the face that is positioned at cooling fan 31 1 sides is open state.Effect to this air guide member 40 is described below.In cooking beginning or after after a while, cooling fan 31 begins rotation, outer gas is drawn into suck in the body 21 outside body 21, and the electric component in the body 21 is cooled off.But, with different among the embodiment of front be that present embodiment makes the outer gas of inflow carry out earlier importing on the temperature detection plate 37 of heating clamber temperature thermistor 33 after the rectification again, so turbulent flow can not take place in air-breathing, can provide stable cooling blast.
In addition, because the radiant heat from heating clamber 22 can be inhibited, the temperature of the suction temperature check-out console 38 of heating clamber temperature thermistor 33 can keep stable, thereby can carry out high-precision correction to heating clamber temperature thermistor 33, consequently also can carry out high-precision correction the temperature of heating clamber 22.
(embodiment 4)
Fig. 7 is the operational block diagram of the thermatron among the present invention the 4th embodiment.As shown in Figure 7, before cooking operation begins, the temperature of heating clamber temperature thermistor 33 and suction temperature thermistor 34 is compared, if its temperature difference is greater than predefined temperature, then judge it is to carry out cooking operation continuously under the state after the temperature of heating clamber 22 uprises, also change over the condition that adapts with the said temperature state thereby will heat control model.Like this, even under the situation of ceaselessly cooking continuously, also can detect the state of temperature of the heating clamber 22 after carrying out cooking.Therefore, can carry out high-precision correction, getting rid of its temperature effect, thereby can carry out high-precision correction the temperature of heating clamber 22 to heating clamber temperature thermistor 33.
In sum, thermatron of the present invention owing to can directly detect blocked state and proofread and correct by heating clamber temperature thermistor itself, therefore, can not cause that manufacturing cost rises, thermatron product cheaply is provided, it is disconnected to eliminate simultaneously erroneous judgement, and the temperature of heating clamber is proofreaied and correct reliably.Because thermatron of the present invention can provide reliable protection to electric component, so can also be useful in device that electrification, combustion gas, fuel oil equal energy source heat, the equipment etc.
Claims (6)
1. thermatron is characterized in that comprising:
Accommodate the heating clamber of heating object;
The heater that described heating object is heated;
The heating clamber temperature thermistor that the temperature of described heating clamber is detected;
The control device of described heater being controlled according to the detected temperatures of described heating clamber temperature thermistor; With
The air-blast device that electric component in the Machine Room is cooled off,
Wherein, described heating clamber temperature thermistor is arranged on the air intake passage side of described air-blast device.
2. thermatron as claimed in claim 1, it is characterized in that: described heating clamber temperature thermistor comprises temperature detection part and mounting portion, with temperature detection part after be located at opening portion on the heating clamber and insert, the mounting portion is fixed on the heating clamber; In addition, described mounting portion is provided with the suction temperature check-out console.
3. the thermatron described in claim 1, it is characterized in that following structure: described control device combines heating clamber temperature thermistor and the suction temperature thermistor that detects suction temperature and is used, and by the variations in temperature of suction temperature thermistor the detected heating clamber temperature of heating clamber temperature thermistor is proofreaied and correct.
4. the thermatron described in each of claim 1～3, it is characterized in that following structure: the part in air-breathing is directed on the mounting portion of heating clamber temperature thermistor.
5. the thermatron described in each of claim 1～3, it is characterized in that: before the heating beginning, the temperature of heating clamber temperature thermistor and suction temperature thermistor is compared, if its temperature difference is higher than predefined temperature, the heating control model is changed.
6. the thermatron described in claim 4, it is characterized in that: before the heating beginning, the temperature of heating clamber temperature thermistor and suction temperature thermistor is compared,, the heating control model is changed if its temperature difference is higher than predefined temperature.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005312236A JP2007120830A (en) | 2005-10-27 | 2005-10-27 | High frequency heating device |
| JP2005312236 | 2005-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1955556A true CN1955556A (en) | 2007-05-02 |
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ID=38063034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610137450 Pending CN1955556A (en) | 2005-10-27 | 2006-10-25 | High frequency heating device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2007120830A (en) |
| CN (1) | CN1955556A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6253693B2 (en) * | 2015-09-25 | 2017-12-27 | グアンドン ミデア キッチン アプライアンス マニュファクチュアリング カンパニー リミテッドＧｕａｎｇｄｏｎｇ Ｍｉｄｅａ Ｋｉｔｃｈｅｎ Ａｐｐｌｉａｎｃｅｓ Ｍａｎｕｆａｃｔｕｒｉｎｇ Ｃｏ．， Ｌｔｄ． | microwave |
| CN106647872A (en) * | 2016-12-09 | 2017-05-10 | 国网电力科学研究院武汉南瑞有限责任公司 | Low-temperature-resistant low-frequency heating device for transformers |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58167802U (en) * | 1982-04-30 | 1983-11-09 | 三洋電機株式会社 | cooking equipment |
| JPS597829A (en) * | 1982-07-06 | 1984-01-17 | Toshiba Corp | Heat cooking range |
| JPH0675430B2 (en) * | 1986-09-04 | 1994-09-21 | 松下電器産業株式会社 | High frequency heating device |
| JPH06185738A (en) * | 1992-12-18 | 1994-07-08 | Sharp Corp | Heating equipment |
| JPH06347044A (en) * | 1993-06-07 | 1994-12-20 | Toshiba Corp | Microwave oven |
-
2005
- 2005-10-27 JP JP2005312236A patent/JP2007120830A/en active Pending
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2006
- 2006-10-25 CN CN 200610137450 patent/CN1955556A/en active Pending
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| JP2007120830A (en) | 2007-05-17 |
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