CN1603692A - Microwave oven - Google Patents
Microwave oven Download PDFInfo
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- CN1603692A CN1603692A CNA2004100806940A CN200410080694A CN1603692A CN 1603692 A CN1603692 A CN 1603692A CN A2004100806940 A CNA2004100806940 A CN A2004100806940A CN 200410080694 A CN200410080694 A CN 200410080694A CN 1603692 A CN1603692 A CN 1603692A
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- microwave oven
- food
- distance
- cooking plate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/08—Arrangement or mounting of control or safety devices
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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
- H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/08—Arrangement or mounting of control or safety devices
- F24C7/087—Arrangement or mounting of control or safety devices of electric circuits regulating heat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C3/00—Measuring distances in line of sight; Optical rangefinders
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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
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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
Abstract
The processing executed by a control circuit of a microwave oven includes: a step of starting microwave radiation in a cooking box (S702), a step of receiving a signal from a reflected wave (S704), a step for detecting the distance to an object (S706), a step of judging the condition of the cooking plate according to the distance detected (S708), and a step of heating controlled according to the position of the cooking plate (S712) if the cooking plate is arranged in the cooking box (YES in S710).
Description
Technical field
The present invention relates to microwave oven, in particular, the present invention relates to and to select the microwave oven of heat treated according to the distance of distance food.
Background technology
Microwave oven comprises a plurality of heating schedules as its function, and the user can suitably heat food by the heating schedule of selecting to be fit to.But it has following problem, according to the food that will heat, is not easy to carry out corresponding selection that is:, in addition, and the operating difficulties of the selection usefulness of heating schedule.In addition, selecting under the situation of heating schedule, still can't suitably add the problem of thermal control according to the state of kind, amount or the shape etc. of food even have.
So, such as, the flat 7-27338 document of TOHKEMY (patent documentation 1) discloses following heater, and this heater can pass through range sensor, measures the distance apart from cook utensil, can select to toast or process the program of copying etc.This heater comprises the heating part; Test section, this test section detect from the heating chamber top part, to the distance that is arranged at the apparatus that comprises container, dish in the heating chamber corresponding to the culinary art pattern; Control part, this control part is controlled the heating part according to the output signal of test section.
According to this heater, if measure the distance that position and heating chamber top part are set of apparatus of the container, cooking plate etc. of the special use adopt corresponding to the culinary art pattern, then culinary art pattern is identified.Because control part is according to this recognition result, the heating part is controlled, so can realize the automation of cooking.Like this, cook the identification of pattern by selecting heating schedule, thus, the user can adopt microwave oven easily, cooks.
In addition, such as, the flat 7-77332 document of TOHKEMY (patent documentation 2) discloses following heater, and this heater can be judged heating object.This heater comprises test section, and this test section detects the top part from heating chamber, to the distance of heating object; The identification part, this identification part basis is from the variation of the output signal decipherment distance of test section; Control part, this control part is controlled the heating part according to the output signal from the identification part.
According to this heater, according to the top part from heating chamber, to the companion of the range information between the heating object over time, detection is by the swell increment of the package body of the food of package body covering or the swell increment of cake etc.Because control part is controlled the heating part, so can improve the final result of the culinary art of the portion of being heated according to the information of such detection.
Patent documentation 1:JP spy opens flat 7-27338 document
Patent documentation 1:JP spy opens flat 7-77332 document
Summary of the invention
But, if adopt patent documentation 1 disclosed heater, even then can cook under the situation of pattern recognition at specific a kind of cooking plate, still can't judge each dish, maybe can't discern the situation that cooking plate directly is positioned over the bottom surface of cooking cavity at a plurality of dishes.Thus, has the situation that suitably to select heating schedule.
In addition, according to patent documentation 2 disclosed heaters,, still can't before heating, judge which kind of heating object is judged even can control heat treated according to the variation that adding of heating object pines for.Thus, has situation about can't suitably control to the heating of heating object.
The present invention proposes in order to address the above problem, the object of the present invention is to provide raising to the kind of cooking plate, the microwave oven of the judgement of position is set.
In addition, an also purpose of the present invention be to provide the kind that can automatically discern food, the microwave oven of the program that will heat.
According to an aspect that is used to solve the technical scheme of problem of the present invention, microwave oven comprises heating chamber, and this heating chamber is admitted food; Cooking plate, this cooking plate is arranged in the above-mentioned heating chamber, has the surface state of the bottom surface state that is different from above-mentioned heating chamber; Heating arrangements, this heating arrangements are used for above-mentioned food is heated; Output mechanism, this output mechanism are used for receiving above-mentioned wave reflection ripple to above-mentioned heating chamber internal radiation ripple, the output reception result; Storing mechanism, this storing mechanism according to the corresponding mode of above-mentioned cooking plate, the range of receiving of the above-mentioned wave reflection that storage obtains in advance; Decision mechanism, this decision mechanism are used for according to above-mentioned reception result and range of receiving, judge the state that is provided with of above-mentioned cooking plate; Controlling organization, this controlling organization, are controlled above-mentioned heating arrangements the mode that above-mentioned food heats according to the state that is provided with according to above-mentioned cooking plate.
According to the microwave oven that employing has such scheme,, then export testing result if output mechanism, receives this wave reflection ripple to the heating chamber radiated wave.Output mechanism such as, comprise infrared ray sensor and ultrasonic sensor etc.This reception result comprises phase place, magnitude of voltage, the detection distance of ripple etc.Here, " detect distance " is not meant actual distance, and is meant the reflected wave that receives according to output mechanism and calculated distance.Storing mechanism according to the corresponding mode of cooking plate, the range of receiving of storage wave reflection ripple (such as, considered to detect the scope of difference of the state etc. of error, step-up error, cooking plate).Decision mechanism is judged the state that is provided with of the cooking plate of heating chamber according to this reception result and range of receiving.That is and since the wave reflection state be subjected to reverberation surface state (such as, surface roughness, shape, gradient, coating etc.) influence, so can be according to reflected wave, the state that is provided with of judgement cooking plate.This is provided with state and comprises whether cooking plate is arranged in the heating chamber, or the kind of set cooking plate etc.Controlling organization is according to being provided with state according to this, the mode that food is heated to heating arrangements (such as, magnetron) control.If such formation, then use of microwave ovens person can not set the position that is arranged at the cooking plate in the heating chamber, and the heat treated that in microwave oven, is fit to.Perhaps, according to relevant in advance mode, the storage cooking plate position, kind and cooking menu be set, to its occasion of storing, can automatically judge cooking menu according to the state that is provided with of cooking plate.The microwave oven of the convenience that can improve the user can be provided thus.
Best, the scope of the distance that detects corresponding to above-mentioned cooking plate that above-mentioned storing mechanism storage obtains in advance.Output mechanism is exported the detection distance that has detected according to the accepting state of above-mentioned wave reflection ripple.Above-mentioned decision mechanism comprises the state decision mechanism is set, and this is provided with the state decision mechanism and is used for according to the scope of the distance of having stored and detects distance, judges the state that is provided with of above-mentioned cooking plate.
According to the microwave oven of such formation, can judge the state that is provided with of cooking plate, the heat treated that is fit to by detecting distance apart from cooking plate.
Best, above-mentioned storing mechanism is stored in above-mentioned cooking plate and is not arranged at occasion in the above-mentioned heating chamber, output as above-mentioned output mechanism, and the scope of the distance that obtains in advance, the above-mentioned state decision mechanism that is provided with comprises and has or not decision mechanism, this have or not decision mechanism be used for according to the scope of the distance of having stored with detect distance, judge whether above-mentioned cooking plate is arranged at above-mentioned heating chamber.
According to the microwave oven of such formation, have or not the scope of decision mechanism according to distance that has detected and the distance that obtains in advance to store, judge whether cooking plate is arranged in the heating chamber.So, can judge that with good precision cooking plate is not arranged at the situation in the heating chamber by storing the scope of distance in advance.
Best, the above-mentioned occasion of decision mechanism in above-mentioned detection distance is included in the scope of above-mentioned distance that have or not, judge that above-mentioned cooking plate is not arranged in the above-mentioned heating chamber, apart from the occasion in the scope that is not included in above-mentioned distance, judge that above-mentioned cooking plate is arranged in the above-mentioned heating chamber in above-mentioned detection.
According to the microwave oven of such formation, detecting apart from the occasion in the scope that is not included in the distance of storing in advance, judge that cooking plate is arranged in the heating chamber.So, can make the following possibility that is treated as, promptly only can carry out heat treated in such occasion, can not carry out cooking plate and not be arranged at heat treated of the occasion in the heating chamber etc.Perhaps, also can automatically select cooking plate to be arranged at the thermal control that adds that adds thermal control and the occasion that is not provided with of occasion in the heating chamber.Like this, can prevent the misoperation of microwave oven.
Best, in above-mentioned heating chamber, be formed with a plurality of portions that are provided with that above-mentioned cooking plate is set.Storing mechanism is stored in the scope that cooking plate is arranged at the detected corresponding distance of occasion that portion respectively is set, the state decision mechanism of setting comprises position judgment mechanism, this position judgment mechanism is used for the scope according to the above-mentioned detection distance and the distance of having stored, judges which above-mentioned cooking plate is arranged at one is set.
According to the microwave oven of such formation, whether be arranged at heating chamber except judging cooking plate, but also judge that in a plurality of which this cooking plate be arranged at one is set.So, owing to can change the heat treated of microwave oven, so can carry out more suitable heat treated corresponding to portion is set.
Best, position judgment mechanism is being detected apart from the occasion in the scope that is included in above-mentioned distance, judges that cooking plate is arranged at and the corresponding portion that is provided with of the scope of above-mentioned distance.
According to the microwave oven of such formation, if in advance in storing mechanism, storage is apart from the data of the distance of the portion of detecting by output mechanism that respectively is provided with, and then the portion that is provided with that is provided with cooking plate is judged by position judgment mechanism.If such formation even because in heating chamber, forms under a plurality of situations that portion is set, still can specify the portion that respectively is provided with easily, so can improve the precision of heat treated.
Best, above-mentioned surface state is any one of material, surface-treated completion status, shape or surface roughness.
Microwave oven according to such formation, because for the wave reflection ripple and the wave reflection ripple that is radiated the bottom of heating chamber that are radiated in the cooking plate, in phase place, intensity and other accepting state is different, so can judge the state that is provided with of cooking plate according to this accepting state.
Best, this microwave oven comprises a plurality of above-mentioned cooking plates.The surface state of each cooking plate is different.
Which according to the microwave oven of such formation, be arranged in the culinary art chamber owing to can judge cooking plate, so can under the situation that the setting of cooking plate is not imported individually, be loaded into the heat treated of the food of each cooking plate.
Best, above-mentioned microwave oven also comprises infrared ray sensor, and this infrared ray sensor has makes infrared ray realize the filter of transmission, and above-mentioned output mechanism adopts as the light wave that carries out the ripple of radiation; The wavelength of light wave is less than the wavelength of the transmissive of filter.
According to the microwave oven of such formation, output mechanism is exported the ripple of its wavelength greater than the wavelength of the detectable output wave of infrared ray sensor (such as, 1 μ m).Consequently, the ultrared influence that detects because of the ripple that is not subjected to the output mechanism radiation of infrared ray sensor is so can prevent the reduction of the precision (such as, the precision of temperature) of the testing result of infrared ray sensor.Thus, microwave oven can carry out correct heat treated.
Best, above-mentioned microwave oven also comprises the mechanism that is used to store with the corresponding heating condition of kind of above-mentioned food; State detection mechanism, this state detection mechanism are used for detecting the accepting state of above-mentioned reflected wave according to above-mentioned reception result; Kind decision mechanism, this kind decision mechanism are judged the kind of above-mentioned food according to the accepting state of above-mentioned reflected wave; The heating controlling organization, this adds thermal control structure according to basis and the corresponding heating condition of the kind of the food of having judged, and the mode that above-mentioned food heats is controlled above-mentioned heating arrangements.
According to the microwave oven of such formation, the kind that is arranged at the food in the heating chamber is judged according to the accepting state of reflected wave.Here, the kind of food comprise such as, solid-state food, fluid food.The accepting state of reflected wave comprise such as, the attenuation rate of reflected wave, the number of times of the variation of the detection distance of stipulated time, rate of change etc.If such formation, the user can be under the situation of the setting of the kind of not importing food, in microwave oven, and the heat treated that is fit to.Thus, the microwave oven of providing convenience property raising.
Best, above-mentioned state detection mechanism comprises following testing agency, this testing agency is used for according to preset time, detect continuously apart from the distance between the object of the above-mentioned ripple of reflection from above-mentioned accepting state, the mentioned kind decision mechanism comprises the food decision mechanism, this food decision mechanism is used for the variation according to above-mentioned distance, judges that above-mentioned food is solid-state food, or fluid food.
According to the microwave oven of such formation, according to the variable quantity in the stipulated time of the distance that is detected, judge that the food that is positioned in the heating chamber is solid-state food, or fluid food.Consequently, such as, with the occasion of judging the kind of food in moment, can suppress to detect the disconnected influence of erroneous judgement of error, like this, can improve the precision of heat treated.
Best, the variable quantity of preset time, distance calculates in above-mentioned testing agency, and above-mentioned decision mechanism judges that in the variable quantity of the above-mentioned distance occasion less than predetermined value above-mentioned food is solid-state food.Above-mentioned decision mechanism is judged above-mentioned food fluid food in the variable quantity of the above-mentioned distance occasion greater than predetermined value.
Microwave oven according to such formation, because change frequency according to the distance that is detected in the preset time, carry out the judgement of solid-state food or fluid food,, can reduce the disconnected possibility of erroneous judgement of the error of detection signal so compare with the occasion of carrying out this judgement in moment.
Best, the frequency of preset time, variable in distance is calculated by above-mentioned testing agency, and above-mentioned decision mechanism judges that in the occasion of said frequencies less than predetermined value above-mentioned food is solid-state food, in the occasion of said frequencies, judge that above-mentioned food is fluid food greater than predetermined value.
Microwave oven according to such formation, because variable quantity according to the distance that detects within the predetermined time, carry out the judgement of solid-state food or fluid food,, can reduce the disconnected possibility of erroneous judgement of the error of detection signal so compare with the occasion of carrying out this judgement in moment.
Best, above-mentioned microwave oven also comprises the testing agency of entering the room, and this testing agency of entering the room is used to detect above-mentioned food and enters above-mentioned heating chamber, when above-mentioned state detection mechanism enters above-mentioned heating chamber from above-mentioned food, and the status detection that begins the variation of above-mentioned reflected wave.
According to microwave oven with such scheme, because after food is put into heating chamber, obtain the data of the kind that is used to judge food, break so can prevent erroneous judgement.If like this, then such as, be not arranged at the occasion of heating chamber at food, owing to do not carry out heat treated, so can prevent misoperation.
Best, above-mentioned microwave oven also comprises and opens and closes testing agency, and this switching testing agency is used to detect the switching of above-mentioned door portion, above-mentioned state detection mechanism when closing above-mentioned door portion, the status detection that begins the variation of above-mentioned reflected wave.
According to microwave oven, after the user closes a portion, begin to be used to judge the distance detection of the kind of food, so can correctly carry out this judgement with such scheme.
Best, above-mentioned heating controlling organization is forbidden the action of the heating of above-mentioned heating arrangements in the occasion that the above-mentioned testing agency of entering the room does not detect the food inlet chamber.
According to microwave oven with such scheme, can judge that entering the chamber has or not by entering chamber testing agency, that is: the food in the heating chamber has or not.If like this, because the occasion that can only be received in the heating chamber at food is carried out heat treated, so can prevent the misoperation of microwave oven.
According to microwave oven of the present invention,, the state that is provided with of cooking plate is input in the microwave oven, so can improve the convenience of culinary art because the user needn't be when each culinary art.Perhaps, owing to the state that is provided with, automatically select method for heating and controlling, so can improve the convenience of culinary art according to cooking plate.
In addition, according to microwave oven of the present invention, owing to judge the kind that is arranged at the food in the heating chamber, so can be fit to the culinary art of the kind of this food.
Description of drawings
Fig. 1 is the block diagram of the composition of the microwave oven of expression the 1st embodiment of the present invention;
Fig. 2 is the figure (1) of the outward appearance of the microwave oven of expression the 1st embodiment of the present invention;
Fig. 3 is the figure (2) of the outward appearance of the microwave oven of expression the 1st embodiment of the present invention;
Fig. 4 (A), Fig. 4 (B) are arranged at the figure of the cooking plate in the cooking cavity of microwave oven shown in Figure 2 for expression;
Fig. 5 (A), Fig. 5 (B) is for being used for illustrating the figure of the data that are stored in memory shown in Figure 1;
Fig. 6 (A), Fig. 6 (B) are presentation graphs 4 (A), the situation that is provided with of the cooking plate shown in Fig. 4 (B) and the figure of the relation between the distance detection result between the range sensor;
Fig. 7 is the flow chart of the step of the processing that control circuit carried out of the microwave oven of expression the 1st embodiment of the present invention;
Fig. 8 (A), Fig. 8 (B) is the figure of the outward appearance of the microwave oven of expression the 2nd embodiment of the present invention;
Fig. 9 for explanation be received in the microwave oven of the 2nd embodiment of the present invention food with detect apart between the figure (1) of relation;
Figure 10 for explanation be received in the microwave oven of the 2nd embodiment of the present invention food with detect apart between the figure (2) of relation;
Figure 11 is the flow chart of the step of the processing that control circuit carried out of the microwave oven of the 2nd embodiment of the present invention.
Embodiment
With reference to the accompanying drawings, embodiments of the invention are described.In the following description, same parts adopt identical label.Corresponding title is all identical with function.So, do not repeat specific descriptions about these same parts.
(the 1st embodiment)
Below with reference to Fig. 1～7, the 1st embodiment of the present invention is described.With reference to Fig. 1, the composition of the microwave oven 100 of the 1st embodiment of the present invention is described.Fig. 1 is the block diagram of the structure of expression microwave oven 100.
As shown in Figure 1, this microwave oven 100 comprises control circuit 110; The range sensor 120 that is connected with this control circuit 110; Operating portion 130; Door sense switch 132; Infrared ray sensor 134; Cooling fan motor 136; Baking heater 138; Micro-wave resonator circuit 140; Display part 142.Control circuit 110 comprises microcomputer 112 and memory 114.Range sensor 120 comprises wave radiation portion 122 and ripple acceptance division 124.
Below with reference to Fig. 2, the internal structure of the microwave oven 100 of present embodiment is described.Fig. 2 is the figure of the microwave oven 100 of expression desheathing (not shown).
As shown in Figure 2, in microwave oven 100,, be provided with range sensor 120 at the top of cooking cavity.The installation site of this range sensor 120 preferably such as, near the pars intermedia of cooking cavity, still, the installation site is not limited to pars intermedia.Such as, also can be the end of cooking cavity.
This microwave oven 100 also comprises infrared ray sensor 134, and the infrared ray that this infrared ray sensor 134 detects from the cooking cavity radiation is measured temperature.The installation site of this infrared ray sensor 134 is such as, the oblique upper portion (not shown) of cooking cavity, but is not limited to this position.Such as, also consider to be installed on such as, can be installed in the position of under the situation about spreading all over everywhere the inside of cooking cavity being scanned from the infrared signal of infrared ray sensor 134.
Below with reference to Fig. 3, the structure of the microwave oven 100 of present embodiment further is described.Fig. 3 represents door 150 states of opening with microwave oven 100.
As shown in Figure 3,, be provided with the mounting guide rail 152,154 that is used to be provided with cooking plate described later in the inside of this microwave oven 100.By cooking plate being arranged at any installation portion, not only have the situation that cooking plate is arranged at the bottom surface 103 of cooking cavity, and the position of cooking plate can be adjusted to be fit to institute's food cooked the position.In addition, the quantity of the mounting guide rail 152,154 of such formation or position (that is 103 the distance apart from the bottom surface) is not limited to occasion shown in Figure 3.In addition, the shape of mounting guide rail 152,154 is not limited to such convex shown in Figure 3.
Below with reference to Fig. 4 (A), Fig. 4 (B) is described the cooking plate in the microwave oven 100 that is installed on present embodiment.The cooking plate 400 of Fig. 4 (A) expression ceramic.Fig. 4 (B) represents metal cooking plate 410.
To in the cooking plate 400 of ceramic, the end face that food is set carries out level and smooth surface light face to be handled.Face realizes that according to absorbing microwave the mode of heating is provided with heating film 401 within it.On the other hand, on the end face that food is set of metal cooking plate 410, carry out full light face and handle.So the cooking plate 400 of ceramic and metal cooking plate 410 have different mutually surface state (such as, shape in material, surface-treated form, cross section etc.).
If such formation is owing to follow each cooking plate and difference from the state of the wave reflection of range sensor radiation, so the accepting state of the reflected wave of transducer is also at each cooking plate and difference.Consequently, even be arranged under the situation of the identical installation portion in the microwave oven 100 at the cooking plate with different surface state, range sensor 120 also detects the accepting state of different reflected waves.So, can judge the kind of the cooking plate that is arranged at installation portion according to such accepting state.
In addition, the cooking plate that is installed in the microwave oven 100 is not limited to the occasion shown in Fig. 4 (A) or Fig. 4 (B), can comprise according in reflection during from the signal of range sensor, and the mode that its direction is different is carried out the situation that the light face on surface is handled.
Below with reference to Fig. 5 (A), Fig. 5 (B), the data that the microwave oven 100 of present embodiment is adopted are described.Fig. 5 (A) is stored in the figure of the data structure in the memory 114 of control circuit 110 for expression in a schematic way.Fig. 5 (B) illustrates the figure of the relation between cooking plate and the detection distance for being used for according to above-mentioned data structure.This detection distance refer to such as, infrared radiation to each cooking plate, from the distance that its reflected wave obtains, this distance is different with distance apart from the reality of each cooking plate.
As shown in Fig. 5 (A), expression cooking plate 400,410, the storage of the corresponding relation between the installation site of each cooking plate is in memory 114.Here, maximum, minimum value span are judged the upper lower limit value that cooking plate is set in this position from transducer 120.The data of the kind of expression cooking plate refer to be installed on the cooking plate in the microwave oven 100, can preestablish.The position refers to be provided with the position of corresponding cooking plate.In this position, mounting guide rail 152,154 is set.In addition, be not arranged at occasion in the microwave oven 100, the data of storage " NULL " at cooking plate.
As shown in Fig. 5 (B), the data pin that range sensor 120 is detected is different to each cooking plate.If such formation, but the testing result of relative distance transducer 120 are judged the kind of the cooking plate of the position be arranged at regulation, or the having or not of cooking plate.In addition, the interval between the detection of the quantity of the cooking plate that can be provided with and range sensor 120 distance does not limit especially.
Below with reference to Fig. 6 (A), Fig. 6 (B), to each cooking plate being arranged at the occasion in the microwave oven 100, and cooking plate is not arranged at the occasion of microwave oven 100, and the relation between the testing result of range sensor 120 is described.Fig. 6 (A) for expression at the different cooking plate 400,410 of surface state, be arranged at the figure of tabulation of the distance that occasion detected in each place in the cooking cavity.Fig. 6 (B) expression is not arranged at cooking plate the distance that occasion detected in the microwave oven 100.
Occasion on the bottom surface 103 of the cooking cavity that directly is arranged at microwave oven 100 such as, cooking plate 400, the distance that range sensor 120 is detected is 291mm.Be arranged at the occasion on the mounting guide rail 152 of microwave oven 100 at cooking plate 400, the distance that range sensor 120 is detected is 225mm.In the occasion that cooking plate 400 is arranged on the mounting guide rail 154, this distance is 103mm.In the occasion of cooking plate 410, the relevant detection distance is 279mm, 236mm and 130mm equally.
On the other hand, the occasion in any cooking plate all is not arranged at the cooking cavity of microwave oven 100, the distance that range sensor 120 is detected is 260mm.Like this, be arranged at the occasion in the microwave oven 100 and be not arranged at occasion in this microwave oven 100,, detect different respectively distances by range sensor 120 for cooking plate.So, can be according to the detection distance of range sensor 120, judge the kind with cooking plate of having or not of cooking plate.
In addition, the judgement with the kind of cooking plate of having or not of cooking plate is not limited to the distance that detects by range sensor 120.That is, also can be output valve from following mechanism (magnitude of voltage, phase place and other), the radiation-curable ripple of this mechanism, receive ripple.
Below with reference to Fig. 7, the control structure of the microwave oven 100 of present embodiment is described.Fig. 7 is the flow chart of the step of 110 processing of carrying out of the control circuit that had of expression microwave oven 100.
At step S702, control circuit 110 sends the control signal of regulation by to range sensor 120, the radiation of beginning ripple.
At step S704, control circuit 110 is from the ripple acceptance division 124 of the range sensor 120 that received the wave reflection ripple, received signal.
At step S706, control circuit 110 detects apart from the distance of the interior object of the cooking plate that is arranged at microwave oven 100 according to the signal that has received.This object such as, be cooking plate.In addition, be not arranged at occasion in the cooking cavity at cooking plate, object forms the bottom surface of cooking cavity.
At step S708, control circuit 110 detects the form of the configuration of cooking plate according to the distance that has detected.In this form, comprise whether cooking plate is arranged in the cooking cavity of microwave oven 100, and the occasion of cooking cavity be set this cooking plate is arranged at which installation portion etc.
At step S710, control circuit 110 judges according to the form that has detected whether cooking plate is arranged at the inside of cooking cavity.In that the occasion of cooking plate (at step S710, being "Yes") is set, forward step S712 to and handle.Not being such occasion (, being "No"), forward step S714 to and handle at step S710.
At step S712, control circuit 110 by with the corresponding control in the position that cooking plate is set (output), the inside of cooking cavity is heated.Such as, being arranged at the occasion of the mounting guide rail 154 on upper strata at cooking plate, its output is less than the occasion of the mounting guide rail 152 that is arranged at lower floor.
At step S714, control circuit 110 carry out cooking plate be not arranged at cooking cavity inside occasion add thermal control.
Above such structure and the flow chart of following basis is described the action of the microwave oven 100 of present embodiment.Below, the action that cooking plate 400 is arranged at the occasion on the mounting guide rail 154 on upper strata of cooking cavity of microwave oven 100 is described.
If the user is positioned over food on the cooking plate 400, put it in the cooking cavity of microwave oven 100 and close door then, then detect the situation that door closes after, radiation is used to measure the ripple (step S702) apart from the distance of range sensor.Receive wave reflection ripple (step S704), detect according to this received signal apart from cooking plate 400 apart from the time (step S706), according to this distance, judge that the cooking plate that is arranged in the cooking cavity is cooking plate 400 (step S708).Because cooking plate 400 is received in the microwave oven 100 and (at step S710, is "Yes"), carries out being arranged at cooking plate 400 the corresponding heat treated of condition (step S710) of the occasion of installation portion 154.
As above, the microwave oven 100 of present embodiment is used to detect the ripple of distance to the cooking plate radiation of the inside that is arranged at cooking cavity, receives this wave reflection ripple.In this occasion, the surface of each cooking plate or cooking cavity forms according to the different mode of corresponding surface state.Thus, even be arranged at each cooking plate under the situation of same position of cooking cavity, the testing result of range sensor 120 is different respectively distances.So, by mode, the position and the heating condition of each cooking plate is stored in the memory 114 in advance according to the phase cross-correlation, thus, the user judges the kind of cooking plate and the position is set under the situation of the setting of not importing cooking plate.If such formation, owing to can under the situation of the load that does not increase the user, cook, so can improve the operability of microwave oven 100.
(the 2nd embodiment)
Below with reference to Fig. 8 (A), Fig. 8 (B)～Figure 11 is described the 2nd embodiment of the present invention.In addition, the hardware configuration of the microwave oven 800 of present embodiment is identical with aforesaid the 1st embodiment.So, do not repeat the description of these parts.
The microwave oven 800 of present embodiment and the difference of aforesaid the 1st embodiment are to judge the kind of the food that is arranged at cooking cavity.Here, the kind of food comprises fluid food or solid-state food.Fluid food such as, comprise the food of the beverage that is injected in the container and other liquid state.In addition, solid-state food is higher than the food of fluid food for its viscosity, such as, for being contained in rice in the container and other solid-state food-stuff products.
Below with reference to Fig. 8 (A), Fig. 8 (B) is described an example of the microwave oven 800 that adopts present embodiment.Fig. 8 (A) is arranged at the figure of the state in the cooking cavity of microwave oven 800 for expression teacup 810.Fig. 8 (B) fills the figure of the state that the magnetic cup 820 of milk is provided with in the same manner for expression.
As shown in Fig. 8 (A), teacup 810 is arranged at such as, the basic pars intermedia of the bottom surface of the cooking cavity of microwave oven 800.This position is that still, the position of teacup 810 is not limited to this such as, the scope that the visual field comprised of range sensor (not shown).Such as, also the range sensor that the visual field can be enlarged be installed on the end face of cooking cavity, thus, removes the restriction of the position of teacup 810.If such formation even be not arranged at teacup 810 under the situation of pars intermedia of bottom surface of cooking cavity, still can be carried out processing described later.
Below with reference to Fig. 9 and Figure 10, the distance detection result of the transducer 120 of adjusting the distance is described.Fig. 9 is illustrated in the sequential chart of the magnetic cup 820 that fills 200ml milk being put into the variation of the distance that the occasion of the cooking cavity of microwave oven 800 detects.Figure 10 is illustrated in the sequential chart that rice 150g contains the variation of the distance that the occasion in teacup 810 detects.
As shown in Figure 9,,, detect distance and be about 290mm to through about 2 seconds from the beginning distance detecting.This distance shows at the moment, is not arranged at the situation in the cooking cavity of microwave oven 800 fully.Then, be arranged in the microwave oven 800 if fill the magnetic cup 820 of milk, the result who then detects distance is reduced to about 160mm sharp.Its reason is: the liquid level of magnetic cup 820 or milk is detected by range sensor 120.
Then, in curve, about the edge, in the recurrent fluctuations, detect the level that distance changes to 200mm at leisure.Its reason is: when being received in magnetic cup 820 in the microwave oven 800, and the vibration of the liquid level of milk.If detect this vibration, then resemble and show this vibration Fig. 9 by range sensor 120.In this occasion, in the occasion of such liquid being put into microwave oven 800, detecting apart from before dwindling, need the several seconds (such as, about 5 seconds).
On the other hand, as shown in Figure 10, be arranged in the microwave oven 800 if will fill the teacup 810 of rice, then the value of detected distance is less than 160mm.Then, the value of distance rises to 175mm, keeps the state that dwindles.That is, because the viscosity of rice is higher than milk, so the amplitude of the vibration that produces during being arranged at microwave oven 800 time fills the occasion of vibration of glass generation in 820 o'clock of liquid (such as, milk) less than setting.
So, with Fig. 9 or such relation shown in Figure 10 as such as, the value of amplitude, frequency or time rate of change are pre-set in the memory 114, thus, can judge easily that the food that is arranged in the cooking cavity is fluid food or solid-state food.
Below with reference to Figure 11, the control structure of the control circuit 110 of the microwave oven 800 of realizing present embodiment is described.Figure 11 is the flow chart of the step of the processing carried out of expression control circuit 110.In addition, same step numbers is adopted in the processing identical with aforesaid the 1st embodiment, does not repeat the description about them.
At step S1106, control circuit 110 judges whether food puts into cooking cavity.This judgement is carried out according to the testing result of range sensor 120.Such as, if predefined distance does not change, then control circuit 110 judgement food are not put into microwave oven 800.On the other hand, in the testing result of stipulating relatively, the temporary transient unchanged occasion of result is judged food is put into cooking cavity.The occasion of food being put into cooking cavity (, being "Yes") at step S1106, transfer to S1108, handle.Not such occasion (, being "No"),, carrying out judgment processing once more through behind the preset time at step S1106.
At step S1108, control circuit 110 detects the distance apart from food according to the signal from range sensor 120.
At step S1110, whether the detected value of control circuit 110 judging distances fluctuates.Whether this judges within the predetermined time carry out according to the variation of the degree more than the predetermined revolution according to detecting distance.Occasion (at step S1110, being "Yes") in this distance detection value fluctuation forwards step S112 to, handles.Not being such occasion (, being "No") at step S1110, forward step S1114 to, handle.
At step S1112, the control that the beverage that is arranged in the cooking cavity is heated is carried out in the control of control circuit 110 by stipulating.At this moment, control circuit 110 reads corresponding to beverage in advance the heating condition (output, heating time etc.) of storage from memory 114, and the indication of this heating condition is outputed to micro-wave resonator circuit 140 etc.
At step S1114, control circuit 110 carries out control that the solid-state food that is arranged in the cooking cavity is heated.At this moment, control circuit 110 is read corresponding to beverage the heating condition (output, heating time etc.) of storage in advance from memory 114, and micro-wave resonator circuit 140 etc. is exported in the indication of this heating condition.
According to above such structure and flow chart, the action of the microwave oven 800 of present embodiment is described.The occasion of teacup 810 being put into microwave oven 800 is described.
The teacup 810 that will fill rice the user is put into microwave oven 800, closes the occasion of door, range sensor 120 radiated waves, beginning distance detection.Cooking cavity (at step S1106, being "Yes") has been put into food in control circuit 110 judgements, detects the distance (step S1108) apart from teacup 810.
In this occasion, because (step S1110 is "No") dwindled in the fluctuation of the value of the distance that has detected at once, so be fit to the heat treated (step S1114) of rice.
As above-mentioned, the microwave oven 800 of present embodiment judges that according to the state of detection apart from the variation of the signal of the distance that is received in the object in the cooking cavity object is the such solid-state food of rice, or the such fluid food of milk.Heat treated is carried out according to the heating condition of being selected by this judged result.If such formation, owing to automatically set and be received in the corresponding processing of kind of the food in the cooking cavity, so can more compatibly cook.Thus, the microwave oven of providing convenience property raising.
In addition, in the various embodiments described above, by detecting the variation to measure apart from the output of the range sensor 120 of the distance of object, carry out the judgement (that is, object is solid-state food or fluid food) of the kind of the judgement of the position that object is provided with or object.Such judgement also can be the output judgement in addition of range sensor 120.Also can such as, radiation light-wave, sound wave receive its reflected wave they are judged.
This time disclosed embodiment is exemplary aspect whole, it should be thought indefiniteness.Scope of the present invention is not by top description, but provides by the scope of claim, and it comprises implication that the scope with claim is equal to and the whole change scheme in the scope.
Claims (16)
1. microwave oven, this microwave oven comprises:
Heating chamber, this heating chamber is admitted food;
Cooking plate, this cooking plate is arranged in the above-mentioned heating chamber, has the surface state of the surface state of the bottom surface that is different from above-mentioned heating chamber;
Heating arrangements, this heating arrangements are used for above-mentioned food is heated;
Output mechanism, this output mechanism are used for to above-mentioned heating chamber inside, and radiated wave receives above-mentioned wave reflection ripple, the output reception result;
Storing mechanism, this storing mechanism according to the corresponding mode of above-mentioned cooking plate, the range of receiving of the above-mentioned wave reflection that storage obtains in advance;
Decision mechanism, this decision mechanism are used for according to above-mentioned reception result and range of receiving, judge the state that is provided with of above-mentioned cooking plate;
Controlling organization, this controlling organization are used for, to the mode that above-mentioned food heats above-mentioned heating arrangements being controlled according to the state that is provided with according to above-mentioned cooking plate.
2. microwave oven according to claim 1 is characterized in that;
Above-mentioned storing mechanism storage obtains in advance, the scope of the distance that detects corresponding to above-mentioned cooking plate;
Above-mentioned output mechanism is exported the detection distance that has detected according to the accepting state of above-mentioned wave reflection ripple;
Above-mentioned decision mechanism comprises the state decision mechanism is set, and this is provided with the state decision mechanism and is used for scope and above-mentioned detection distance according to the above-mentioned distance of having stored, judges the state that is provided with of above-mentioned cooking plate.
3. microwave oven according to claim 2 is characterized in that above-mentioned storing mechanism is stored in above-mentioned cooking plate and is not arranged at occasion in the above-mentioned heating chamber, as the output of above-mentioned output mechanism, and the scope of the distance that obtains in advance;
The above-mentioned state decision mechanism that is provided with comprises and has or not decision mechanism, and this has or not decision mechanism to be used for scope and above-mentioned detection distance according to the above-mentioned distance of having stored, judges whether above-mentioned cooking plate is arranged at above-mentioned heating chamber.
4. microwave oven according to claim 3 is characterized in that the above-mentioned decision mechanism that has or not:
Apart from the occasion in the scope that is included in above-mentioned distance, judge that above-mentioned cooking plate is not arranged in the above-mentioned heating chamber in above-mentioned detection;
Apart from the occasion in the scope that is not included in above-mentioned distance, judge that above-mentioned cooking plate is arranged in the above-mentioned heating chamber in above-mentioned detection.
5. microwave oven according to claim 2 is characterized in that:
In above-mentioned heating chamber, be formed with a plurality of portions that are provided with that above-mentioned cooking plate is set;
Above-mentioned storing mechanism is stored in the scope that above-mentioned cooking plate is arranged at the corresponding distance of the occasion detection that portion respectively is set;
The above-mentioned state decision mechanism that is provided with comprises position judgment mechanism, and this position judgment mechanism is used for the scope according to the above-mentioned detection distance and the distance of having stored, judges which above-mentioned cooking plate is arranged at one is set.
6. microwave oven according to claim 5 is characterized in that the occasion of above-mentioned position judgment mechanism in above-mentioned detection distance is included in the scope of above-mentioned distance, judges that above-mentioned cooking plate is arranged at and the corresponding portion that is provided with of the scope of above-mentioned distance.
7. microwave oven according to claim 1 is characterized in that the bottom surface of above-mentioned heating chamber or the surface state of cooking plate are material, surface-treated completion status, shape or surface roughness.
8. microwave oven according to claim 1 is characterized in that this microwave oven comprises a plurality of above-mentioned cooking plates;
The corresponding surface state of above-mentioned a plurality of cooking plates is different.
9. microwave oven according to claim 1 is characterized in that above-mentioned microwave oven also comprises infrared ray sensor, and this infrared ray sensor has makes infrared ray realize the filter of transmission;
Above-mentioned output mechanism adopts as the light wave that carries out the ripple of radiation;
The wavelength of above-mentioned light wave is less than the wavelength of the transmissive of above-mentioned filter.
10. microwave oven according to claim 1 is characterized in that above-mentioned microwave oven also comprises:
Be used to store mechanism with the corresponding heating condition of kind of above-mentioned food;
State detection mechanism, this state detection mechanism are used for detecting the accepting state of above-mentioned reflected wave according to above-mentioned reception result;
Kind decision mechanism, this kind decision mechanism are judged the kind of above-mentioned food according to the accepting state of above-mentioned reflected wave;
The heating controlling organization, this adds thermal control structure according to basis and the corresponding heating condition of the kind of the food of having judged, and the mode that above-mentioned food heats is controlled above-mentioned heating arrangements.
11. microwave oven according to claim 10 is characterized in that:
Above-mentioned state detection mechanism comprises testing agency, and this testing agency is used for according to preset time, detects from above-mentioned accepting state and detects continuously apart from the distance between the object of the above-mentioned ripple of reflection;
The mentioned kind decision mechanism comprises the food decision mechanism, and this food decision mechanism is used for the variation according to above-mentioned distance, judges that above-mentioned food is solid-state food or fluid food;
12. microwave oven according to claim 11 is characterized in that:
The variable quantity of preset time, above-mentioned distance calculates in above-mentioned testing agency;
Above-mentioned decision mechanism:
In the variable quantity of above-mentioned distance occasion, judge that above-mentioned food is solid-state food less than predetermined value;
In the variable quantity of above-mentioned distance occasion, judge that above-mentioned food is fluid food greater than predetermined value.
13. microwave oven according to claim 11 is characterized in that:
The frequency of preset time, above-mentioned variable in distance is calculated by above-mentioned testing agency;
Above-mentioned decision mechanism:
In the occasion of said frequencies, judge that above-mentioned food is solid-state food less than predetermined value;
In the occasion of said frequencies, judge that above-mentioned food is fluid food greater than predetermined value.
14. microwave oven according to claim 10 is characterized in that:
Above-mentioned microwave oven also comprises the testing agency of entering the room, and this testing agency of entering the room is used to detect above-mentioned food and enters above-mentioned heating chamber;
When above-mentioned state detection mechanism enters above-mentioned heating chamber from above-mentioned food, the status detection that begins the variation of above-mentioned reflected wave.
15. microwave oven according to claim 10 is characterized in that:
Above-mentioned microwave oven also comprises and opens and closes testing agency, and this switching testing agency is used to detect the switching of above-mentioned door portion;
Above-mentioned state detection mechanism when closing above-mentioned door portion, the status detection that begins the variation of above-mentioned reflected wave.
16. microwave oven according to claim 14 is characterized in that above-mentioned heating controlling organization in the occasion that the above-mentioned testing agency of entering the room does not detect the food inlet chamber, forbids the action of the heating of above-mentioned heating arrangements.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP340580/2003 | 2003-09-30 | ||
| JP2003340580A JP2005106388A (en) | 2003-09-30 | 2003-09-30 | Microwave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1603692A true CN1603692A (en) | 2005-04-06 |
Family
ID=34419188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100806940A Pending CN1603692A (en) | 2003-09-30 | 2004-09-27 | Microwave oven |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2005106388A (en) |
| KR (1) | KR20050031903A (en) |
| CN (1) | CN1603692A (en) |
| WO (1) | WO2005033584A1 (en) |
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| JP4586738B2 (en) * | 2006-02-02 | 2010-11-24 | 株式会社島津製作所 | ICP analyzer |
| JP5482496B2 (en) * | 2010-06-21 | 2014-05-07 | パナソニック株式会社 | High frequency heating device |
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| JPS5949427A (en) * | 1982-09-14 | 1984-03-22 | Toshiba Corp | High-frequency heater |
| JPH0781716B2 (en) * | 1986-12-17 | 1995-09-06 | 松下電器産業株式会社 | Heating device |
| JPS63223417A (en) * | 1987-03-12 | 1988-09-16 | Toshiba Corp | Cooking apparatus |
| JPH0579635A (en) * | 1991-09-25 | 1993-03-30 | Matsushita Electric Ind Co Ltd | Heating and cooking device |
| JP3082597B2 (en) * | 1994-10-20 | 2000-08-28 | 松下電器産業株式会社 | High frequency heating equipment |
| JP2000002436A (en) * | 1998-06-18 | 2000-01-07 | Matsushita Electric Ind Co Ltd | Heating cooker |
| JP3669556B2 (en) * | 1999-03-24 | 2005-07-06 | 三菱電機株式会社 | Cooking equipment |
| JP2003090541A (en) * | 2001-09-20 | 2003-03-28 | Sharp Corp | Heating cooker |
| JP2003161446A (en) * | 2001-11-20 | 2003-06-06 | Sanyo Electric Co Ltd | Heating cooker |
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2003
- 2003-09-30 JP JP2003340580A patent/JP2005106388A/en not_active Withdrawn
-
2004
- 2004-09-22 KR KR1020040076046A patent/KR20050031903A/en not_active Application Discontinuation
- 2004-09-27 CN CNA2004100806940A patent/CN1603692A/en active Pending
- 2004-09-28 WO PCT/JP2004/014571 patent/WO2005033584A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2005033584A1 (en) | 2005-04-14 |
| JP2005106388A (en) | 2005-04-21 |
| KR20050031903A (en) | 2005-04-06 |
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