CN102812298B - Heating device - Google Patents
Heating device Download PDFInfo
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- CN102812298B CN102812298B CN201180013908.0A CN201180013908A CN102812298B CN 102812298 B CN102812298 B CN 102812298B CN 201180013908 A CN201180013908 A CN 201180013908A CN 102812298 B CN102812298 B CN 102812298B
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- heating
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- temperature
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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
- H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
- H05B6/645—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using temperature sensors
- H05B6/6455—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using temperature sensors the sensors being infrared detectors
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electric Ovens (AREA)
- Induction Heating Cooking Devices (AREA)
Abstract
Heating device of the present invention has: heating cabinet, and it comprises the bottom surface of mounting heating object; Heater, it heats the heating object in heating cabinet; Light-emitting device, it sends the light of at least infrared band in heating cabinet; Infrared ray sensor, it detects the reverberation from bottom surface and obtains the information of heating object; And control device, it at least controls heater and light-emitting device.Thus, even normal temperature article, infrared ray sensor also can be used to control heating in the information that the heating initial stage obtains heating object, therefore, it is possible to realize low price and compact heating device.
Description
Technical field
The present invention relates to the heating device employing light-emitting device and infrared temperature detecting sensor.
Background technology
In the past, be generally known to use infrared ray sensor to measure the heating device of the Temperature Distribution in heating cabinet.
But, when utilizing the food of heating device to room temperature in the past to heat, because food is roughly the same with the temperature in the heating cabinet of heating device, therefore at the heating initial stage, the Temperature Distribution that can not detect according to infrared ray sensor obtains the information such as the shape of food.Therefore, such as, Patent Document 1 discloses following heating device: this heating device infrared ray sensor detects the Temperature Distribution adding and hanker the food that temperature rises, thus identify the shape of food.
Figure 29 is the figure of the important part that the heating device in the past shown in patent document 1 is described.As shown in figure 29, heating device has the heating cabinet 125 of storage food in heating device main body 124, and is formed by with lower part: magnetron 126, and it is for heating food; Waveguide 127, the microwave that magnetron 126 produces guides in heating cabinet 125 by it; And infrared temperature sensor 128, it measures the temperature in heating cabinet 125.
Further, heating device makes the temperature of food rise to a certain degree by heating, and detects the Temperature Distribution of food with infrared temperature sensor 128, thus identifies the shape of food.But, when hope is heated food with the temperature rising to a certain degree, exist and superheated problem carried out to food.
Below, about the main cause of above-mentioned problem, be described for situation about setting as follows: when from heating before food temperature such as rise more than 10 DEG C time, identify the shape of food with the infrared temperature sensor 128 of heating device.
That is, such as, when the milk being once heated to 50 DEG C is heated to 55 DEG C again, the temperature of milk at least will rise more than 10 DEG C from 50 DEG C to 60 DEG C, and infrared temperature sensor 128 just can identify the temperature of milk.Therefore, milk is heated to the temperature (60 DEG C) higher than preferred temperature (55 DEG C).
Therefore, in the shape of unidentified food, and when stopping heating when the temperature in the somewhere in heating cabinet 125 reaches 55 DEG C, following such problem can be produced.
That is, when attached to spot in heating cabinet 125, under the effect of heating, the temperature of accompanying spot rises soon than milk temperature.Therefore, although milk temperature not yet rises to preferred temperature (55 DEG C), heating device but finishes heating.
In addition, when reusing heating device immediately after other food having been carried out to heating, the temperature sometimes in heating cabinet 125 can rise to higher than preferred temperature.In this situation, after heating starts, infrared temperature sensor 128 detects preferred temperature immediately, thus heating device terminates heating.
In order to solve above such problem, such as, just identify the heating device of the shape of the food of room temperature with Patent Document 3 discloses at the heating initial stage at patent document 2.Patent document 2 is such as the structure of the shape identifying room temperature food with camera heads such as CCD, and patent document 3 uses the sensor of the brightness measured in heating cabinet to identify the structure of the shape of room temperature food.
But, the CCD of patent document 2 or to detect the camera heads such as ultrared CCD general costly.In addition, whether being food to differentiate captured image analysis, needing the process of height, and in order to improve processing speed, need expensive arithmetic unit.Therefore, the cost being assembled with the heating device of camera head is very high, is difficult to be equipped on cheap electrical household appliance.
Therefore, the sensor of the comparatively cheap mensuration brightness of the such use of patent document 3 is disclosed to identify the heating device of shape of food.
Figure 30 is the figure of the important part structure that the heating device in the past shown in patent document 3 is described.As shown in figure 30, heating device has the heating cabinet 125 of storage food in heating device main body 124, and this heating device is formed by with lower part: magnetron 126, and it is for heating food; Waveguide 127, the microwave that magnetron 126 produces guides in heating cabinet 125 by it; Infrared temperature sensor 128, it measures the temperature in heating cabinet 125; Luminance sensor 130; And the lighting device 129 for throwing light on to heating cabinet 125.
Further, drive infrared temperature sensor 128 and luminance sensor 130 to detect Temperature Distribution in heating cabinet 125 and Luminance Distribution, identify the shape of food at the heating initial stage.
Thus, in above-mentioned heating device, even if food temperature does not rise to a certain degree, also the shape of room temperature food can be detected at the heating initial stage, therefore can not carry out superheated to food.Such as, though when hope by be heated to 50 DEG C Milk During Heating to 55 DEG C, also can stop heating before milk temperature reaches 60 DEG C, therefore heating can not occur.
But, in the structure of the heating device of patent document 3, need infrared temperature sensor 128 and luminance sensor 130, the therefore cost increase of using detection food temperature.In addition, need closely to arrange infrared temperature sensor 128 and luminance sensor 130, make the visual field identical, and need to perform the adjustment making the visual field identical.Further, when closely arranging infrared temperature sensor 128 and luminance sensor 130, the sensor housing that they are received is become to large and becomes heavy.Therefore, infrared temperature sensor 128 and luminance sensor 130 must be driven with the motor that driving force is large, thus cost is higher.
In addition, the heat resistance of infrared temperature sensor 128 and luminance sensor 130 is generally about 80 DEG C, therefore when the temperature considering that the infiltration etc. of the steam because producing from the food after heating causes rises, needing to flow through cooling air and cooling.But, owing to being arrange infrared temperature sensor 128 and luminance sensor 130 in less sensor housing, flow through the large cooling structure of the cooling air pressure loss although therefore become, so there is the problems such as cooling performance reduction.
On the other hand, such as, in patent document 4, also disclose following heating device: this heating device uses multiple infrared ray sensor, dimensionally grasp the shape of the food in heating cabinet.But, carry multiple infrared ray sensor and cost can be caused to uprise.In addition, when using under the high temperature more than 100 DEG C, the structure that infrared ray sensor is cooled must be adopted, therefore be difficult to form infrared ray sensor compactly.
Therefore, such as patent document 5 discloses the heating device dimensionally catching the heating objects such as food with an infrared ray sensor.
Below, Figure 31 is used to be described the heating device shown in patent document 5.Figure 31 is the figure of the important part structure that the heating device in the past shown in patent document 5 is described.
As shown in figure 31, heating device in the past has the heating cabinet 125 of storage food in heating device main body 124, and this heating device is formed by with lower part: for the heater 131 of heated food; Measure the infrared temperature sensor 128 of the temperature in heating cabinet 125; For loading the rotating disk 132 of food; And rotating disk 132 is carried out to the rotating driving device 133 of rotary actuation.
And, such as when toasting the gastronomical process of cake, after putting into cake mix after preheat, first according to the shape of the heating object determined by infrared temperature sensor, the distance X between the center of the nethermost rotating disk 132 of measurement heating object and end points.Then, according to the shapometer calculated altitude Y of measured distance X and heating object.Disclose the method for the shape dimensionally grasping heating object by this way.
But, in the computational methods of shape dimensionally grasping heating object, there is following problem.
Such as, said method can only be used for following situation, that is: the center of cake and the pivot of rotating disk 132 that relative to the center of rotating disk 132 are rotational symmetric cylindricity are as one man placed.Further, for the micro-wave oven of type that there is not rotating disk or heating device, can not ensure that heating object is necessarily positioned in central authorities, sometimes will place multiple heating object, or receive cylindrical beyond the food of various shapes.
In addition, when the cake base (25 DEG C) of room temperature is received into heating cabinet 125 by (such as 200 DEG C) after preheat, can according to its temperature difference infrared ray sensor identification shape.But, when receiving the heating object of room temperature in the heating cabinet of room temperature, there is not the temperature difference between heating cabinet and heating object, therefore there is following problem: at the heating initial stage, infrared ray sensor cannot identify the shape of heating object completely.
Prior art document
Patent document
[patent document 1] Japanese Patent No. 3402051 publication
[patent document 2] Japanese Patent No. 1780983 publication
[patent document 3] Japanese Unexamined Patent Publication 2003-287232 publication
[patent document 4] Japanese Patent No. 2999661 publication
[patent document 5] Japanese Unexamined Patent Publication 2001-355854 publication
Summary of the invention
Heating device of the present invention has: heating cabinet, and it comprises the bottom surface of mounting heating object; Heater, it heats the heating object in heating cabinet; Light-emitting device, it sends the light of at least infrared band in heating cabinet; Infrared ray sensor, it detects the reverberation from bottom surface and obtains the information of heating object; And control device, it at least controls heater and light-emitting device.
Thereby, it is possible to realize heating device as follows: this heating device can utilize low cost at the heating initial stage and compact infrared ray sensor obtains the information such as the shape of the heating objects such as the food of room temperature, thus heats efficiently.
Accompanying drawing explanation
Fig. 1 is the figure of the important part structure of the heating device that embodiment of the present invention 1 is described.
Fig. 2 is the front elevation of this heating device.
Fig. 3 is the figure of the important part structure that this heating device is described.
Fig. 4 is the plane of the bottom surface of this heating device.
Fig. 5 is the plane of the bottom surface of this heating device.
Fig. 6 is the Sequence chart of this heating device.
Fig. 7 A is the testing result figure of the infrared ray sensor of this heating device.
Fig. 7 B is the testing result figure of the infrared ray sensor of this heating device.
Fig. 7 C is the testing result figure of the infrared ray sensor of this heating device.
Fig. 8 is the plane of the bottom surface of this heating device.
Fig. 9 A is the plane of the bottom surface of this heating device.
Fig. 9 B is the plane of the bottom surface of this heating device.
Fig. 9 C is the plane of the bottom surface of this heating device.
Figure 10 A is the figure that the Temperature Distribution detected by the infrared ray sensor of this heating device is shown rectangularly.
Figure 10 B is the figure that the Temperature Distribution detected by the infrared ray sensor of this heating device is shown rectangularly.
Figure 10 C is the figure that the Temperature Distribution detected by the infrared ray sensor of this heating device is shown rectangularly.
Figure 11 is the figure of the important part structure of the heating device that embodiment of the present invention 2 is described.
Figure 12 is the important part stereogram of this heating device.
Figure 13 A is the important part plane of the infrared ray sensor of this heating device.
Figure 13 B is the important part plane of the infrared ray sensor of this heating device.
Figure 14 is the figure that the Temperature Distribution detected by the infrared ray sensor of this heating device is shown rectangularly.
Figure 15 A is the figure of the detection of the infrared ray sensor that this heating device is described.
Figure 15 B is the figure of the detection of the infrared ray sensor that this heating device is described.
Figure 15 C is the figure of the detection of the infrared ray sensor that this heating device is described.
Figure 16 A is the figure of the detection of the infrared ray sensor that this heating device is described.
Figure 16 B is the figure of the detection of the infrared ray sensor that this heating device is described.
Figure 16 C is the figure of the detection of the infrared ray sensor that this heating device is described.
Figure 17 is the figure of the important part structure of the heating device that embodiment of the present invention 3 is described.
Figure 18 is the testing result figure of the infrared ray sensor that this heating device is shown.
Figure 19 A is the figure of the detection of the infrared ray sensor that this heating device is described.
Figure 19 B is the figure of the detection of the infrared ray sensor that this heating device is described.
Figure 19 C is the figure of the detection of the infrared ray sensor that this heating device is described.
Figure 20 A is the figure of the detection of the infrared ray sensor that this heating device is described.
Figure 20 B is the figure of the detection of the infrared ray sensor that this heating device is described.
Figure 20 C is the figure of the detection of the infrared ray sensor that this heating device is described.
Figure 21 is the figure of the testing result of the infrared ray sensor that this heating device is shown.
Figure 22 is the Sequence chart of the heating device of other examples of embodiment of the present invention 3.
Figure 23 is the figure of the important part structure of the heating device that embodiment of the present invention 4 is described.
Figure 24 is the Sequence chart of this heating device.
Figure 25 is the figure of the important part structure of other examples that this heating device is described.
Figure 26 is the figure of the important part structure of the heating device that embodiment of the present invention 5 is described.
Figure 27 is the figure of the important part structure of the heating device that embodiment of the present invention 6 is described.
Figure 28 is the figure of the important part structure of the heating device that embodiment of the present invention 7 is described.
Figure 29 is the figure of the important part structure of the heating device illustrated in the past.
Figure 30 is the figure of the important part structure of the heating device of other examples illustrated in the past.
Figure 31 is the figure of the important part structure of the heating device of other examples illustrated in the past.
Detailed description of the invention
Below, with reference to accompanying drawing, embodiments of the present invention are described.In addition, the present invention is not by the restriction of present embodiment.
(embodiment 1)
Below, the heating device of Fig. 1 to Fig. 9 C to embodiment of the present invention 1 is used to be described.
Fig. 1 is the figure of the important part structure of the heating device that embodiment of the present invention 1 is described.Fig. 2 is the front elevation of this heating device.Fig. 3 is the figure of the important part structure that this heating device is described.Fig. 4 is the plane of the bottom surface of this heating device.Fig. 5 is the plane of the bottom surface of this heating device.Fig. 6 is the Sequence chart of this heating device.Fig. 7 A to Fig. 7 C is the testing result figure of the infrared ray sensor of this heating device.Fig. 8 is the plane of the bottom surface of this heating device.Fig. 9 A to Fig. 9 C is the plane of the bottom surface of this heating device.
As depicted in figs. 1 and 2, the heating device of embodiments of the present invention 1 has: heating device main body 1; The heating cabinet 2 for receiving food that front is opened wide; And the front of heating cabinet 2 is carried out to the door 3 of opening and closing.
In heating device main body 1, at least there is heater 4, waveguide 5, disperser 6, infrared ray sensor 7, control device 8, power cut detection device 9, cooling fan 10 and door open-close detection apparatus 3b.Further, heater 4 is made up of magnetron, heats food.The microwave that magnetron from heater 4 is released is guided to heating cabinet 2 by waveguide 5.Disperser 6 makes the microwave guided by waveguide 5 effectively be diffused in heating cabinet 2.Infrared ray sensor 7 detects the Temperature Distribution in heating cabinet 2.Control device 8 controls infrared ray sensor 7 and heater 4.Power cut detection device 9 detects whether there occurs power failure.Cooling fan 10 pairs of heaters 4, infrared ray sensor 7 and control device 8 etc. cool.The opening and closing of door open-close detection apparatus 3b detecting gate 3.
Now, disperser 6 has the blade 6b of motor 6a and rotation, by making blade 6b rotate with motor 6a, is diffused into by microwave in heating cabinet 2.In addition, the blade 6b of disperser 6 has directive property.Therefore, control device 8 change disperser 6 blade 6b stopping direction and vibrate microwave time, the directive property of the blade 6b of disperser 6 can be utilized, change the heating place in heating cabinet 2.
In addition, in heating cabinet 2, there is temperature sensor 12 in the light-emitting device 11 at least sending infrared light be arranged on the bottom surface 2a of heating cabinet 2 and the storehouse detecting the temperature in heating cabinet 2.Light-emitting device 11 is made up of the device of planar luminescence, and luminous on the roughly overall general uniform ground of bottom surface 2a.In storehouse, temperature sensor 12 is arranged at the top of heating cabinet 2, detects the space temperature in heating cabinet 2.
Further, in heating device main body 1, have the lighting device 13 be such as made up of organic EL or inorganic EL etc., this lighting device 13, via the opening portion 2b of side being arranged at heating cabinet 2, throws light on from the outside of heating cabinet 2 in heating cabinet 2.Now, glass plate is embedded in the 2b of opening portion, spot etc. can not be attached on lighting device 13.In the side relative with opening portion 2b of heating cabinet 2, there is the opening portion 2c as simple through hole, make infrared ray sensor 7 can detect temperature in heating cabinet 2.In addition, lighting device 13, in the side with infrared ray sensor 7 not homonymy, is configured in the position that microwave can not arrive lighting device 13.
In addition, as shown in Figure 2, door 3 front surface bottom in off position has display unit 14 and multiple action button 15, and portion has handle 16 on the front surface.Door 3 has rotating shaft 3a in the bottom of door 3.And be configured to: when tractive during the handle 16 of door 3, rotate centered by rotating shaft 3a, handle 16 declines along with opening of door 3.The central portion of door 3 is made up of transparent panel 17, to understand the state in heating cabinet 2, a part for door 3 is provided with room temperature detecting sensor 18.Further, room temperature detecting sensor 18 is arranged at the position of the easy detection room temperature be separated with heating cabinet 2 of door 3.
About the infrared ray sensor 7 of the arranged outside of the side surface upper part of the heating cabinet 2 shown in Fig. 1, as shown in Figure 3, infrared detection camera lens 7a be configured to obliquely downward to, make the bottom surface 2a of heating cabinet 2 enter into the visual field.Infrared ray sensor 7 has own temperature detecting sensor 7e, and has detection by ultrared 8 the infrared-ray detecting element 7b after infrared detection camera lens 7a convergence.
And, motor 7c is in the mode rotated to an angle at every turn, around rotating shaft 7d, infrared ray sensor 7 is carried out to the rotary actuation of such as 10 times, make the roughly whole bottom surface 2a of heating cabinet 2 enter in the visual field thus and scan, thus the temperature of bottom surface 2a can be detected.In addition, below, sometimes the visual field of infrared ray sensor 7 infrared-ray detecting element 7b temporary detecting is designated as and is a little described.
In the heating device of said structure, action and the effect of heating device is described based on the heating of food program heated food below.
First the summary of order of the heating employing heating device is described.
First, user opens the door 3 of heating device, is placed on by food on the bottom surface 2a of heating cabinet 2, then closes door 3.Now, control device 8 is closed to door 3 according to the signal detection from door open-close detection apparatus 3b.In addition, under the state that control device 8 can open wide at door 3, the driving of heating-stopping apparatus 4, carries out the driving of heater 4 when detecting that door 3 is closed.
Then, user, by pressing operation button 15, selects appropriate heating menu and heating target temperature from the heating menu shown on a display device 14.Then, control device 8, according to selected heating menu, drives heater 4 and disperser 6, starts heating.While heating starts, lighting device 13 lighted by control device 8.User, by the lighting device 13 after lighting, can confirm the state of the food in heating cabinet 2 across transparent panel 17.
After starting heating, control device 8 makes motor 7c carry out rotary actuation in the mode rotated to an angle at every turn to infrared ray sensor 7, detects the Temperature Distribution in heating cabinet 2 with infrared ray sensor 7.
Afterwards, when infrared ray sensor 7 detects that food temperature reaches heating target temperature, the driving of control device 8 heating-stopping apparatus 4 and disperser 6.Meanwhile, lighting device 13 is extinguished, and notify that heating terminates by display unit 14 or buzzer (not shown) to user.Thus, the heating of heating device to food terminates.
Below, the detection action of Fig. 3 to Fig. 5 to infrared ray sensor 7 is used to be described.
As mentioned above, the infrared ray sensor 7 shown in Fig. 3 such as has 8 infrared-ray detecting element 7b.In addition, infrared ray sensor 7 is installed obliquely, to measure the temperature of the bottom surface 2a of heating cabinet 2 by the opening portion 2c of heating cabinet 2, infrared ray sensor 7 carries out rotary actuation by motor 7c.Now, as shown in Figure 4, visual field B is denoted as after the detection range B(of each infrared-ray detecting element 7b) become independently 8 elliptical shapes.In addition, about the length b of the elliptical shape shown in Fig. 4 and Fig. 5 on the fore-and-aft direction of heating device main body 1, consider the anglec of rotation of infrared ray sensor 7 and the distance etc. from bottom surface 2a, be set to that the part making this length b is overlapping.Further, by carrying out rotary actuation with motor 7c to infrared ray sensor 7, entirety is comprised with the roughly whole bottom surface 2a(of each visual field C covering heating cabinet 2 shown in Fig. 5 thus).
Specifically, first, control device 8 is drive motor 7c when heating beginning, and infrared ray sensor 7 is moved to precalculated position.
After infrared ray sensor 7 stops, control device 8 inputs the temperature information that 8 infrared-ray detecting element 7b detect successively.After the temperature information that have input 8 infrared-ray detecting element 7b, control device 8 is drive motor 7c again, makes infrared ray sensor 7 move certain angle (such as 1 degree).That is, control device 8 makes the movement of every certain angle of infrared ray sensor 7 such as repeat 10 times, and stores according to its each angle the temperature that each infrared-ray detecting element 7b detects.
Afterwards, after infrared ray sensor 7 finishes the movement of the certain angle of 10 times, control device 8 drives to make the mode in the direction of rotation of motor 7c direction towards the opposite.In addition, below infrared ray sensor 7 is moved the detection played and change and be denoted as 1 round till driving direction towards a direction.In addition, the detection being below set to 1 round terminating infrared ray sensor 7 needs 10 seconds and is described.
Further, when heating target temperature being detected in the process of infrared ray sensor 7 detected temperatures, the driving of control device 8 heating-stopping apparatus 4.Meanwhile, make infrared ray sensor 7 move to and avoid opening portion 2c completely.Thereby, it is possible to prevent a part etc. for the food splashed in heating cabinet 2 to be splashed to infrared ray sensor 7 of making dirty heating cabinet 2 by opening portion 2c.
Below, the action of Fig. 6, Fig. 7 A to Fig. 7 C to the action of shape of food and the heating device after identifying that identify the heating initial stage is used to be described.In addition, bottom surface 2a, using nearby (door) side as heating device main body 1, the downside in figure, is modeled as the rectangular temperature that infrared ray sensor 7 detects during 1 round that represents by Fig. 7 A to Fig. 7 C.
As shown in Figure 6, when user presses the operation button 15, first control device 8 makes light-emitting device 11 luminous.Light-emitting device 11 is luminous and after have passed through several seconds, control device 8 makes motor 7c carry out rotary actuation to perform the detection of the 1st round to infrared ray sensor 7.Now, the time required till performing the stand-by period needed for detecting and ending in light-emitting device 11 stabilized illumination is roughly equal.That is, by starting to detect after illumination and light quantity are stablized, the accuracy of detection of temperature can be improved.
Thus, control device 8 stores point, i.e. 80 temperature datas (temperature such as, putting A be 60 DEG C etc.) of 10 angles (be equivalent to certain angle × 10 time movement) of 8 infrared-ray detecting element 7b.In addition, light-emitting device 11 comprises the infrared rays such as infrared light usually.Therefore, detect ultrared infrared ray sensor 7 and detect the infrared light that the infrared light corresponding with the temperature of bottom surface 2a and light-emitting device 11 send simultaneously.Its result, infrared ray sensor 7 detects the temperature higher than the actual temperature of bottom surface 2a.
Now, as shown in Figure 7 A, when being placed on the 2a of bottom surface by food, the light from the light-emitting device 11 being arranged at bottom surface 2a is blocked by food.Therefore, infrared ray sensor 7 only detects the infrared light sent from food.Its result, infrared ray sensor 7, by the detection of 1 round of Fig. 6, as the painting black region (such as 20 DEG C) of Fig. 7 A, detects the temperature of food.Afterwards, as shown in Figure 6, control device 8 makes light-emitting device 11 extinguish.
After light-emitting device 11 extinguishes, by making motor 7c work on, infrared ray sensor 7 performs the detection of the 2nd round thus.Now, the temperature information that shown in Fig. 7 B, 80 temperature datas (temperature such as, putting A is 20 DEG C) that are such, that obtained by infrared ray sensor 7 are formed is preserved respectively.In addition, the region that the black surround of Fig. 7 B impales is the point corresponding to the place of placing food.
Now, as shown in Figure 7 B, in the detection of the 2nd round, infrared ray sensor 7 does not light light-emitting device 11, therefore, only according to corresponding with environment temperature, from the infrared light detection temperature equitemperature information of bottom surface 2a and food.
Afterwards, as seen in figure 7 c, control device 8 calculates the difference (such as 60 DEG C-20 DEG C=40 DEG C) of each point temperature data that the detection of the 1st round of infrared ray sensor 7 and the 2nd round detect.Further, control device 8 is judged to be: be that uniform temperature (such as 5 DEG C) (the black surround region of Fig. 7 C) place of selecting below exists food in the difference of temperature data.
Namely, in the place of placing food, no matter light-emitting device 11 is luminous or extinguishes, all only from food inspection to infrared light, therefore the temperature detected at the 1st round and the 2nd round middle infrared (Mid-IR) sensor 7 does not produce difference (such as, in Fig. 7 C be 0 DEG C by the scope that black surround impales).On the other hand, in the place that the bottom surface 2a not placing food exposes, due to the luminescence/extinguishing of light-emitting device 11, the temperature that infrared ray sensor 7 detects in the 1st round and the 2nd round creates the difference corresponding to the infrared light that the luminescence of light-emitting device 11 causes.
That is, according to the present embodiment, by the difference of the temperature detected by infrared ray sensor 7 of the 2nd round under the extinguishing condition of the 1st round under the luminescent condition of obtaining light-emitting device 11 and light-emitting device 11, the placement location of food can be differentiated.But, in above-mentioned method of discrimination, when loading under the state that food is positioned over the plate larger than food on earth on the 2a of face, the outer shape of food can not be differentiated, only can differentiate the shape of plate.
When utilizing said method to obtain the mounting place of cicada food or plate, control device 8 can regulate the rotary speed of disperser 6, stop direction or dwell time effectively to control the heating in placed place, such as, strengthen the heating in placed place.Its result, can more efficiently heat food.
In addition, slight in greatly to a certain degree following at food, control device 8 may be controlled to the input of reduction heater 4 and reduces and add heat.Thereby, it is possible to prevent from carrying out heating to less food.
Therefore, add heat by changing according to the size of food, or change the driving of heater 4 and stop respective interval, best heating can be carried out to food.
Below, Fig. 8 is used to be described identifying the control after shape of food.
As shown in Figure 8, control device 8, after the difference of the temperature detected by infrared ray sensor 7 according to the 2nd round under the extinguishing condition of the 1st round under the luminescent condition of light-emitting device 11 and light-emitting device 11 determines shape of food, reduces the visual field of infrared ray sensor 7 according to the shape of food.
That is, control device 8 does not detect whole bottom surface 2a in order to the temperature allowing infrared ray sensor 7 detect to there is the part of food D, controls the action of motor 7c and limits the drive amplitude of infrared ray sensor 7.Specifically, reduce the visual field of 1 round of infrared ray sensor 7 compared with Fig. 5, be restricted to the E region shown in solid line of the Fig. 8 that there is food D.Now, such as the detection time of 1 round can be shortened to about 3 seconds.
Thus, after the 3rd round of Fig. 6, interval or time that the temperature needing the point, the instant food that detect to enter into the point in the visual field is detected can be shortened, risen with the temperature of narrower interval or shorter time detecting food by infrared ray sensor 7.
Afterwards, control device 8, when the temperature of certain point of the detection range of infrared ray sensor 7 reaches heating target temperature, stops heating.
Thus, with bottom surface 2a whole in the detection of 1 round come into view detect food temperature situation compared with, food can be gone out with shorter time detecting and arrive the situation of heating target temperature.
Below, Fig. 9 A to Fig. 9 C is used to be specifically described above-mentioned action.In addition, in Fig. 9 A to Fig. 9 C, be described for following situation: the heating target temperature of beverage D is set as 70 DEG C, and beverage D is placed on the substantial middle of bottom surface 2a.In addition, infrared ray sensor 7 performs detection successively according to the direction of arrow in figure.
First, in the timing shown in Fig. 9 A, infrared ray sensor is carrying out the capable detection of G in Fig. 9 A.Further, the temperature selecting at certain the beverage D that F place detects is 69 DEG C.Now, control device 8 does not detect 70 DEG C of the heating target temperature of beverage D, does not therefore stop heating.
But after the visual field of infrared ray sensor 7 has just been displaced to next column, be the temperature of the point of 69 DEG C when just becoming 70 DEG C originally, control device 8 will continue drive motor 7c in the same old way.Therefore, as shown in Figure 9 B, the capable detection of the H in Fig. 9 B is being finished thus after finishing the detection of 1 round, until the detection of the capable some F of the I again performing Fig. 9 C have passed through the time of about 10 seconds.Further, as shown in Figure 9 C, infrared ray sensor 7 is test point F again, and when the temperature of beverage D of 81 DEG C being detected, control device 8 stops the heating of beverage D.
That is, in above-mentioned detection method, in during 10 seconds that again carry out detecting after once detecting, as the example of Fig. 9 A to Fig. 9 C, temperature rises the situation etc. of 11 DEG C, and temperature rises more than predetermined temperature (5 DEG C) sometimes.This is for user, is unnecessary heating.Thus, there are the following problems: the extending heating time of food, and the energy consumption of heating device increases, and compromises the palatability of food owing to crossing heating.
Therefore, by as illustrated in figure 8, identify the shape of food in advance and reduce the detection range of infrared ray sensor, the time (such as shortening to 3 seconds from 10 seconds) needed for detection of 1 round can be shortened.Thus, with detect the situation of whole bottom surface 2a all the time as above-mentioned example compared with, can detect with the time below half.Its result, can reduce the time needed for heating and energy consumption, processes good to eat food.
Below, be described loading the situation that multiple food heats in heating cabinet.
Generally speaking, observe from the reveal of heating device main body 1, the bottom surface 2a of heating device is laterally longer shape.Therefore, when multiple food being placed in bottom surface 2a and heating, the situation carrying out heating about food being configured at the length direction of bottom surface 2a is more.Now, when infrared ray sensor 7 is configured at the rear side of heating device main body 1, even if the detection range of infrared ray sensor 7 to be restricted to the scope of food, also need the Temperature Distribution detecting very large scope.
Therefore, in the present embodiment, infrared ray sensor 7 is arranged on the top of the such as right flank of heating cabinet 2.Therefore, though when about the length direction multiple food being configured at bottom surface 2a, also the detection range of infrared ray sensor 7 can be set as roughly the same with single food more among a small circle.Its result, can detect that multiple food reaches the situation of heating target temperature quickly, thus prevent heating.
In addition, when food being placed in the plate larger than food, first, by the shape with said method identification food, the shape of larger plate can be determined.Afterwards, when continuing heating, the temperature ascensional range of food is larger with the ascensional range of the temperature of other parts (bottom surface) than plate.According to the difference of temperature ascensional range, its result, can differentiate food is in which position in plate.
But, when food be to a certain degree below weight (such as below 100g), can due to heat concentrate and cause temperature sharply to rise.Therefore, when continuous heating, produce food sometimes by the problem etc. extremely heated.
Therefore, heating device in the past, owing to can not differentiate the size of food, therefore only judges according to the rate of climb of temperature, stops the heating of food, thus prevents the exception heating easily produced in a small amount of food.
But, in the above-mentioned methods, even if when not dangerous for larger food, sometimes also can stop heating according to the rate of climb of temperature, in underheated situation, therefore finish heating.
Therefore, heating device in the past heats can prevent the exception of a small amount of food, can not produce in underheated temperature range for larger a large amount of food again, determines that heating stops temperature.But, be difficult to reduce heating and stop temperature to stop the heating of a small amount of food in advance.Therefore, be difficult to accomplish more safely to heat a small amount of food.
But, according to the present embodiment, infrared ray sensor be based on light-emitting device 11 luminescence, extinguish and differentiate the shape of food or plate etc., and the temperature of food in plate rises faster in situation, and control device 8 is judged as that food is less and stops heating.
In addition, according to the present embodiment, by limiting the detection range of infrared ray sensor 7, the temperature of food can be detected with interval short than ever.That is, by detecting whether the programming rate of food is in trend faster in the stage more early, can in the heating of stage stopping food more early.Thus, when a small amount of food, can temperature be stopped to set lower, therefore, it is possible to more safely prevent abnormal heating heating.
Below illustrate and use the shape information of food to differentiate the kind of food and the control method that heats food.
That is, the shape information of the plate etc. of food or mounting food and the temperature rising history detected and temperature are risen distribute combined, differentiate the kind of food, thus heating is controlled.Thereby, it is possible to differentiate the such as liquid such as tea or milk, a small amount of potato fricassee etc. contains the vegetables in little basin and is placed in the entree etc. more greatly and in highly low plate.
Specifically, Figure 10 A to Figure 10 C is used to be described liquid, vegetables, entree Temperature Distribution separately.Figure 10 A to Figure 10 C is the figure that the Temperature Distribution detected by the infrared ray sensor 7 of this heating device is shown rectangularly.Be set in addition, observe from infrared ray sensor 7, the containers such as each plate are identical size, are all in the state of the substantial middle being positioned over bottom surface.In addition, Figure 10 A shows the Temperature Distribution of liquid, and Figure 10 B shows the Temperature Distribution of vegetables, and Figure 10 C shows the Temperature Distribution of entree, and the thick frame table in figure shows the shape of each container.
First, as shown in Figure 10 A, for liquid, as within the scope of the thick frame of container shapes, the temperature of the part of the side close with infrared ray sensor 7 rises.Now, Temperature Distribution changes according to the amount of the liquid joined in container.But substantially certainly exist liquid in the bottom of container, the heat of the liquid therefore after heating passes to container, makes the temperature in container outer wall face also increase.
Therefore, in the case of a liquid, the temperature by infrared ray sensor 7 side of corresponding with container bottom shape of food must rise.In addition, because liquid is diffused into the whole inner side of container, therefore the temperature fast part that rises expands to the upper and lower side of container.
In addition, as shown in Figure 10 B, for vegetables, as within the scope of the thick frame of container shapes, rise comparatively fast with the temperature of the part of infrared ray sensor 7 opposite side.This is because when vegetables, except liquid, solid content is also more, be therefore difficult to carry out concentrating heating to liquid.Further, solid content can not seamlessly be close to scutellate container, is therefore not easy to wall of a container face transferring heat.Therefore, compared to wall of a container face, the temperature of solid content self easily rises.Its result, and can see rising comparatively fast with the temperature of the part of infrared ray sensor 7 opposition side of the shape of the food of the partial response of solid content from infrared ray sensor 7.
In addition, as illustrated in figure 10 c, for entree, as within the scope of the thick frame of container shapes, the temperature in the inboard portion of container rises larger.This is because, when entree is placed in square position, mostly entree is placed in the central authorities of plate, between plate and entree, easily produces certain distance.
Now, when utilizing the shape recognition of food to limit the detection range of infrared ray sensor 7, the temperature of food can be detected with shorter interval.Its result, more clearly can differentiate the difference of the programming rate of food, therefore more easily differentiates the kind and food/container/bottom surface etc. of food.
As mentioned above, according to the present embodiment, can combination container the shape information such as size and detect that the temperature rising history of programming rate and temperature rise distribution, differentiate the kind of food in short time.Its result, by differentiating the heat time of the food after deciding according to the kind of food, can heat palatably and food.
In addition, when adding liquid in highly high container, because the height of container is higher, therefore liquid level scarcely can enter in the visual field of infrared ray sensor 7.Therefore, in most instances, the temperature that detects than infrared ray sensor 7 of the actual temperature of liquid is high.Therefore, at least when infrared ray sensor 7 detects predetermined temperature, need to stop heating immediately.
On the other hand, for entree and vegetables, due to dispersion situation and the shape of food, make the hull-skin temperature of food and internal temperature produce difference, detect that the relatively low situation of internal temperature is many.Therefore, often there is following situation: even if the temperature that infrared ray sensor 7 detects reaches heating target temperature, preferably proceed heating.
Therefore, in the present embodiment, control device 8, when judging food as liquid, stops heating immediately when reaching heating target temperature.On the other hand, control device 8, when judging food as vegetables or entree, according to size and the time reached needed for heating target temperature of food, continues the heating scheduled time.Certainly, at vegetables or entree is few, the size of instant food is less, when heating target temperature stop heating, be not must continue heating.
According to the present embodiment, need to change computer heating control according to the kind of food, but the size of food can be differentiated by the shape recognition of food, and differentiate the kind of food and carry out best computer heating control.Its result, can heated food more palatably.
Below, display when recognizing shape of food in the heating device of present embodiment is described.
First, control device 8 is lighting luminescence, extinguishing and during identifying shape of food, the display unit 14 shown in Fig. 2 carries out representing the display identifying shape of food based on light-emitting device 11.Such as, " intelligence sensing " such word is made to glimmer on a display device 14.Thereby, it is possible to notify operating conditions to user, user is allowed to eat heating device securely.
Below, process when creating power failure in heating process in the heating device of present embodiment is described.
First, when heating the power failure that midway creates in certain hour, when after service restoration, control device 8 according to the signal detection from power cut detection device 9 to the situation occurring power failure.In addition, in addition to the above, be detected as the situation of power failure as power cut detection device 9, also there is the situation that the power supply pulling out heating device also carries out being energized again.In this situation, control device 8, after service restoration or after restarting energising, proceeds heating.
But, sometimes there occurs movement at outage food or plate.That is, finish the shape recognition of food at control device 8 and after reducing the detection range of infrared ray sensor 7, when power failure being detected, if food etc. there occurs movement in heating cabinet 2, then the temperature of food can not be detected.
Therefore, when power failure being detected, first, the detection range of infrared ray sensor 7 is returned to whole bottom surface 2a by control device 8.Afterwards, control device 8 makes the shape that light-emitting device 11 is luminous, extinguishing identifies food again.Further, using the information relevant to shape of food again obtained after having a power failure, the detection range of restriction infrared ray sensor 7, thus, even if food there occurs movement when having a power failure, also can use heating device safely.
Below, the process in the heating device of present embodiment when heating midway and opening is described.
First, when heating midway and opening door 3, control device 8 detects the signal from door open-close detection apparatus 3b, promptly stops heating.Afterwards, under control device 8 detects the pent situation of door 3 again by door open-close detection apparatus 3b, control device 8 identifies the shape of food again according to following process.
That is, first, as mentioned above, the shape that light-emitting device 11 is luminous, extinguishing identifies food is made.Further, when identify there is food in heating cabinet 2, control device 8 restart heating.Now, control device 8 after the shape recognition of food, the drive amplitude of infrared ray sensor 7 is restricted to open door 3 before identical drive amplitude, the region that infrared ray sensor 7 detected temperatures distributes is defined as the region comprising food.Afterwards, control device 8, when infrared ray sensor 7 detects heating target temperature, stops heating.
Thus, even if when the midway of heating opens door 3, also can prevent crossing of food from heating in the same manner as opening in front of the door.Its result, can realize with the short time and the heating device of heated food palatably energy-conservationly.
Below, the storage of information relevant to food in the heating device of present embodiment and Application way thereof are described.That is, about having carried out the food after once heating, control device 8 stores and utilizes the information such as the judgement content of the shape of food, temperature rising history and food variety.
Heating device in the past does not incidentally identify and stores the device of shape of food etc., the shape of food therefore just detected in the final stage of heating.Therefore, be difficult to just carry out appropriate heating to food from the initial of heating.
But, according to the present embodiment, even the food of normal temperature also can identify the shape of food, therefore, it is possible to prestore the information relevant to food at the heating initial stage.
Therefore, first, according to shape of food to be heated and temperature information etc., contrast the food information stored and whether match with food to be heated.Now, if the shape of food is roughly the same with temperature information, being then identified as is the food of identical type.
Further, the determination information etc. of the identical food preserved is utilized to carry out the computer heating control of food.In addition, the size that the determination information of food refers to according to the heat time till reaching predetermined temperature and food judges the information of food variety.Control device 8 according to this information, with the kind of food accordingly, determine that multiple computer heating control mode heats food.In addition, computer heating control mode is that the timing etc. adding heat or heating changing food controls.
That is, in general family, the situation of same containers heat the situation of the dish of certain menu and high-frequency with often occurring high-frequency is used.Therefore, by storing these features, automatically selecting be suitable for the container of each family and be suitable for the heating means of dish, the failure etc. of heating can be reduced.
But, be identical shape of food but the food with different heating characteristic even if also exist.In this situation, first, the heating of food is performed according to stored food information.Now, the determination information of food from temperature rising history to a certain degree different with Shangdi (such as, reaching the time phase difference more than 30% of predetermined temperature) when, control device 8 stops the heating based on preserved food determination information.Further, food determination information is again obtained according to said method.Afterwards, the heating of food is performed according to the food determination information again obtained.Thus, even there is identical shape of food but there is the food of diverse heat characteristic, also can heat rightly.
In addition, the result of such as carrying out the shape recognition of food to be heated when at the heating initial stage is when to mate with plural preserved food information, in preserved food information, select heat time short food information or the little food information of degree of heat, perform the heating of food.
But when the temperature rising history of food to be heated and the food information of preservation have larger difference, first control device 8 stops adopting the food information preserved.Then, the food information of identical type whether is there is according to other food preservation information contrast.Now, when there is the food information of identical type, this food information is utilized to perform the computer heating control of food.In addition, when the information with stored food has larger difference, do not adopt any storage information, the information again obtaining food to be heated heats food.
Below, the control of the additional heating in the heating device of present embodiment is described.In addition, additional heating refers to following action: except above-mentioned heating midway power failure or open door 3 situation except, when will be additional after once heating heat, again heat.
In this situation, because food all be heated once, therefore control device 8 stores Temperature Distribution and the food information such as temperature history and the shape of food certain hour of the food heated.
First, the data such as Temperature Distribution, temperature history and determination information when control device 8 keeps heating with (such as 3 hours) during certain, for additional heating.
Further, control device 8, when again starting the heating of food, determines whether identical with the food that last time heats in the following order.
First, as mentioned above, by making the shape that light-emitting device 11 is luminous, extinguishing identifies food.Now, judge that whether the shape of food is consistent with the shape of food of last time.
Then, judge that whether the Temperature Distribution of food is similar with temperature grade to the Temperature Distribution detected last time with temperature grade.Now, generally speaking, after just heating, the situation that the temperature of each several part of food is different is more, but along with time process from heating, heat diffusion is in food, and therefore the temperature of food each several part easily becomes uniform temperature (mean temperature).Therefore, whether identical by judging the mean temperature of food, identical food can be determine whether more exactly.
Further, when the shape of food, the Temperature Distribution of food are roughly the same with temperature grade, control device 8 judges that food to be heated is the food identical with last time, according to the temperature rising history of last time with judge that content determines the heat time of food.
In heater in the past, be difficult to again heat rightly for having carried out the food after to a certain degree heating.Its reason is: the time of the food of which kind of characteristic that the heat time when food that there is not the temperature for differentiating comparison room temperature degree heats is short, therefore cannot determine the heat time exactly.Therefore, the control device 8 of heater is in the past stop heating after infrared ray sensor 7 detects heating target temperature substantially.
In addition, when for larger food more than to a certain degree, the inside of food is larger with outside temperature difference.But what infrared ray sensor 7 detected is the temperature of food outer surface, and therefore the temperature of food product is not reflected in judgement usually.That is, although the hull-skin temperature of food reaches predetermined temperature, the internal temperature of food not yet reaches predetermined temperature sometimes, or it exists contrary situation.Such as, contain and there is the internal temperature trend higher than outer surface into the rice to rice bowl, and when heating multiple food such as steamed dumplings with the dough gathered at the top, there is the trend that internal temperature is lower than outer surface.Now, for rice, detect the lower temperature of outer surface and stop heating.On the other hand, for steamed dumpling with the dough gathered at the top, after outer surface reaches predetermined temperature, also heating will be added.Thereby, it is possible to heat rightly according to food.
Now, the heat time till reaching uniform temperature according to the temperature of food, judgement stops heating immediately or carries out adding heating.
But when heating the food to a certain degree heated, the heat time reached needed for uniform temperature is short, and the temperature after the heating at initial stage is also varied, is therefore difficult to judge according to the heat time.Therefore, when carrying out the food to a certain degree heated adding heating, be difficult to heat rightly.
But, utilize said method, easily can differentiate and add heating, therefore, it is possible to according to last time food temperature rising history and judge content, such as whether for steamed dumpling with the dough gathered at the top, whether be the determination information that rice etc. is preserved, decide the heat time of food.Thus, even if hanker also determining that the more appropriate heat time heats food adding.
In addition, when have passed through more than certain hour when terminating from the heating of last time, food has carried out cooling to a certain degree.In this situation, control device 8 has clocking capability, is such as " cooling and counting time " by the time measurement till from heating and terminating to play heating next time.
Therefore, such as when after taking out from heating cabinet 2, even if the temperature difference of temperature grade and Temperature Distribution reduces, also can according to the detected temperatures of cooling and counting time and room temperature detecting sensor 18, be identified as and be identical food and the Temperature Distribution of food and temperature grade are corrected and perform heating.
According to the present embodiment, when additional heating, when the shape of food, the Temperature Distribution of food are roughly the same with temperature grade, control device 8 is judged to be it is the food identical with last time, according to the temperature rising history of last time and can judge that content determines the heat time of food.Its result, also can carry out appropriate heating to food when additional heating.
In addition, when being placed back in heating cabinet 2 by food in order to additional heating, the direction of food is different with position sometimes.In this situation, although the Temperature Distribution stored when heating from last time is different, the size of shape, the especially food of food can be detected substantially in the same manner.Now, if the maximum temperature of food is also identical, then control device 8 is judged to be it is the food identical with last time, according to last time food temperature rising history and judge that content determines heat time of food.Its result, when additional heating, can increase the condition can carrying out rightly heating further.
As discussed above, according to the present embodiment, by contrast and compare after just starting to heat, make the light-emitting device be arranged on bottom surface light (luminescence) and with infrared ray sensor to the whole region in heating cabinet detect obtain testing result, with light-emitting device is extinguished and with infrared ray sensor, the testing result obtained is detected to the whole region in heating cabinet, the shape of normal temperature food can be identified and load the information such as position.Thereby, it is possible to the size of food and position correspondingly, the heat distribution that adds added in heat and heating cabinet based on the best is heated efficiently to food.Its result, achieves and can prevent crossing of food from heating and heating the heating device savoury food.
In addition, according to the present embodiment, lighting from light-emitting device (luminescence) after certain hour, detecting the Temperature Distribution of food with infrared ray sensor, the shape recognition of food can be carried out thus under the stable state of the light quantity of light-emitting device.Its result, information that can be high according to accuracy of detection, more efficiently heats food.
In addition, according to the present embodiment, in the shape recognition of food, carry out the situation of shape recognition by display on the display apparatus, reassurance can be brought to user and realize the heating device that is user-friendly to.
In addition, according to the present embodiment, after power failure, again carry out the shape recognition of food, thus, even if the position of food or content there occurs change in power failure, also can carry out appropriate heating to food.And, owing to having power cut detection device, therefore, when from automatically restart during service restoration heating, again the shape etc. of food is identified, therefore, it is possible to realization also can safely to the heating device that food heats when there occurs power failure.
In addition, according to the present embodiment, can correspondingly limit the detection range of infrared ray sensor with the shape of food, go out the temperature of food with shorter interval and time detecting.Its result, what can realize preventing food crosses heating, energy-conservation and heat the heating device savoury food in short time.
In addition, according to the present embodiment, after shape food being detected, correspondingly limit the detection range of infrared ray sensor with food immediately, the temperature rising of food can be detected thus with shorter interval.Thus, the discrimination precision of food variety improves, and more suitably can heat food.
In addition, according to the present embodiment, after limiting the detection range of infrared ray sensor, again carry out whole detection, the comparatively pot foods omitted at the heating initial stage can be detected thus.Thereby, it is possible in the stage of safety, stop the heating compared with pot foods, prevent abnormal heating.Its result, can realize the heating device that security is more excellent.
In addition, according to the present embodiment, when the temperature of food becomes within 5 DEG C of heating target temperature, do not implement whole detection, but detect the temperature of food all the time, can improve the accuracy of detection that temperature rises thus, what prevent food crosses heating, and can realize energy-conservation and short time heating simultaneously.
In addition, according to the present embodiment, differentiate the kind of food according to the shape of food and rate of rise in temperature, the best computer heating control corresponding with the kind of food can be carried out thus.Its result, can realize utilizing and there is not over-heating and the heating device savoury food is heated in underheated heating.
In addition, according to the present embodiment, above side infrared ray sensor being configured in heating cabinet, thus, even if when being placed in heating cabinet by multiple food, the temperature of multiple food can also be detected with the detection range identical with one piece food.Its result, can realize preventing heating when the heating of multiple food and heating the heating device savoury food.
In addition, according to the present embodiment, owing to having an open-close detection apparatus 3b, when therefore automatically restarting heating after door opening and closing, the shape recognition of food can again be implemented.Its result, also can safely to the heating device that food heats when heating midway opposite house has carried out opening and closing even if can realize.
In addition, according to the present embodiment, store the shape of food, temperature rising history and food determination information etc., and by the information obtained during heating of food with storage and preserve information contrast, thus, when for identical type food, preserved food determination information can be utilized to carry out computer heating control.Further, when additional heating, if the mean temperature of food is in certain limit, be then judged to be identical food, preserved food determination information can be utilized to carry out computer heating control.Its result, can realize can the heating device of heated food efficiently.
In addition, according to the present embodiment, possess the control device and room temperature detecting sensor that have clocking capability, therefore, also can carry out computer heating control to through the cooled food of certain hour.
In addition, according to the present embodiment, when utilizing the food information preserved to heat, if temperature rising historical difference is larger, then can stop protecting stored use, and carry out computer heating control according to the temperature rising history of new food and shape information.Further, rising with shorter interval measurement temperature by the detection range of infrared ray sensor being restricted to the scope of food, the situation different from preserved temperature rising history comparatively fast can be detected.Its result, achieves and also but food that heat characteristic differ greatly identical to size can carry out the heating device of best heating.
In addition, according to the present embodiment, judge the kind of the food such as liquid, vegetables or entree according to the shape of food, can computer heating control be changed according to the kind of food and heat thus.Its result, can realize preventing crossing heating and underheat and heating the heating device savoury food of food.
In addition, in the present embodiment, describe example room temperature detecting sensor 18 be arranged on door 3, but be not limited thereto.Such as, the own temperature detecting sensor 7e of infrared ray sensor 7 can also be utilized.Thus, do not need new room temperature detecting sensor 18, therefore, it is possible to form compact and cheap heating device.
In addition, in the present embodiment, describe the example that food overall temperature rise is detected, but be not limited thereto.Also can be such as: the point that the rising of control device 8 predicted temperature is the fastest reach the time place of heating target temperature in the temperature of this point of prediction, control motor 7c, reliably detect the temperature of this point.Thereby, it is possible to reach the situation of heating target temperature with shorter time detecting food.Now, same with above-mentioned situation, after identifying the shape of food, reduce the detection range of infrared ray sensor 7, the temperature of food each several part can be detected thus with interval short than ever.Thereby, it is possible to of short duration time interval detected temperatures, therefore, it is possible to predict that the temperature of food rises more accurately.
In addition, in the present embodiment, be illustrated following example: after the shape recognition of carrying out food, the detection range of infrared ray sensor 7 is restricted to the scope of food by control device 8, detects all data of the infrared-ray detecting element 7b read in detection range.But be not limited thereto.Such as can be configured to: the temperature data that control device 8 is read, not read all data of the infrared-ray detecting element 7b in detection range, but only read the temperature data of the point of the part being identified as food in advance.Thereby, it is possible to shorten the time of the data of the point read beyond the point being identified as food.Its result, can realize more energy-conservation and there is not the heating device heatedly food being carried out to delicious heating in short time.
In addition, in the present embodiment, example infrared ray sensor 7 being arranged at the right flank in heating cabinet 2 being described, but, even if be arranged at the left surface in heating cabinet 2, can detect too.Further, if do not had problems on detection time etc., then also infrared ray sensor 7 can be arranged at the inner surface of heating cabinet 2.
In addition, in the present embodiment, as light-emitting device 11, be illustrated for organic EL of planar luminescence or inorganic EL, but be not limited thereto.Such as, also can be the structure making the light diffusion from light sources such as multiple LED and carry out planar luminescence.Now, light-emitting device 11 can be integrally constituted with bottom surface 2a.Further, if form bottom surface 2a with infrared transmission parts, then also can be the structure that light-emitting device 11 is set in the downside of bottom surface 2a.In addition, as light-emitting device 11, the device towards the luminescence of all directions that directive property is not strong can also be used.Now, the situation that the wall of a container face such as cup of such as containing liquid occurs to reflect becomes many, and therefore the shape recognition precision of food reduces.Therefore, in this situation, by the embodiment 2 after using concrete that describe, compare with fundamental reflection Temperature Distribution the method identifying shape of food, the light-emitting device that directive property is low can be used.
In addition, in the present embodiment, describe when power failure continues heating afterwards automatically, after restarting heating, limit the example of the detection range of infrared ray sensor, but also can not limit detection range and continue whole detection.Equally, in the present embodiment, describe when heating midway opposite house and having carried out opening and closing, after restarting heating, limit the example of the detection range of infrared ray sensor, but also can not limit detection range and continue whole detection.
(embodiment 2)
Figure 11 is the figure of the important part structure of the heating device that embodiment of the present invention 2 is described.
The heating device of embodiment 2 is different from the heating device of embodiment 1 in following: eliminate light-emitting device, and be provided with the sliding driving device 24 that infrared ray sensor 7 is slided.Other structures are substantially identical with embodiment 1 with effect, therefore omit the description.
Namely, as shown in figure 11, the heating and cooking appliance of embodiment 2 has following structure: eliminate light-emitting device, and utilizes the sliding driving device 24 shown in Figure 13 A described later, Figure 13 B, and infrared ray sensor 7 is moved in the slip of carrying out between opening portion 2c, 2d shown in Figure 12.Thereby, it is possible to carry out three-dimensional values to the shape of the heating object in the heating cabinet of heating device.
Below, Figure 12, Figure 13 A and Figure 13 B is used to be described the action and function that make the sliding driving device 24 of infrared ray sensor 7 slip movement.Figure 12 is the important part stereogram of this heating device.Figure 13 A and Figure 13 B is the important part plane of the infrared ray sensor of this heating device.
As shown in figure 12, the detection window of infrared ray sensor 7 and the opening portion 2c of heating cabinet 2 and opening portion 2d, on the fore-and-aft direction of heating device main body 1, are arranged abreast with roughly the same height (comprising phase co-altitude).Opening portion 2c is arranged at the sidewall of heating device main body 1 above the roughly front and back Central Line of bottom surface 2a.On the other hand, opening portion 2d is across distance a(such as about 2cm) be arranged at than opening portion 2c more by the position of inboard (with the side faced by door 3).
Further, infrared ray sensor 7 is configured to, and under the effect of the sliding driving devices 24 such as such as solenoid, comes and goes between the opening portion 2c of Figure 13 A and the position of the opening portion 2d of Figure 13 B.
With reference to embodiment 1, the detection action of Fig. 3 to Fig. 5 and Figure 14 to the infrared ray sensor 7 of heating device as constructed as above is used to be described.Figure 14 is the figure that the Temperature Distribution detected by the infrared ray sensor of this heating device is shown rectangularly.
As shown in Figure 3, the infrared ray sensor 7 with 8 infrared-ray detecting element 7b is installed obliquely, to measure the temperature of the bottom surface 2a of heating cabinet 2 by the opening portion 2c of heating cabinet 2.As shown in Figure 4, visual field B is called after the detection range B(of each infrared-ray detecting element 7b) be made up of independently 8 elliptical shapes.As shown in Figure 4, a part for each elliptical shape is overlapping.Now, such as, the length b of elliptical shape on the fore-and-aft direction of heating device main body 1 is about 2cm.In addition, the visual field B of the rightmost side of the visual field B in Fig. 4 is the region closest to infrared ray sensor 7, therefore the depth of visual field B and left and right length minimum.
Now, by carrying out rotary actuation with motor 7c to infrared ray sensor 7, cover the roughly whole bottom surface 2a of heating cabinet 2 thus with the visual field C shown in Fig. 5.
Further, control device 8 is drive motor 7c when heating beginning, and infrared ray sensor 7 is moved to precalculated position.
After infrared ray sensor 7 stops, control device 8 inputs the temperature information that 8 infrared-ray detecting element 7b detect successively.Afterwards, control device 8 is drive motor 7c again, makes infrared ray sensor 7 rotate to an angle (such as 1 degree).Further, control device 8, by repeatedly carrying out above-mentioned action, makes infrared ray sensor 7 rotate to an angle at every turn, stores the temperature information detected by infrared-ray detecting element 7b of each certain angle.Afterwards, after infrared ray sensor 7 finishes the movement of the certain angle of such as 10 times, control device 8 drives to make the direction of rotation of motor 7c become rightabout mode, enters line inversion driving to infrared ray sensor 7.In addition, infrared ray sensor 7 is carried out facing one direction moving below and play the detection changed as 1 round till driving direction and be described.
Herein, if the detection of 1 round terminates needs about 10 seconds.When control device 8 detects the heating target temperature selected by user in the detection, the driving of control device 8 heating-stopping apparatus 4, meanwhile, makes infrared ray sensor 7 move, to avoid completely in opening portion 2c.This is to prevent a part etc. for the food splashed in heating cabinet 2 to be splashed to infrared ray sensor 7 of making dirty heating cabinet 2 by opening portion 2c.
Afterwards, sliding driving device 24 is utilized to make infrared ray sensor 7 move to opening portion 2d from opening portion 2c.Then, as described above, control device 8 utilizes motor 7c to carry out rotary actuation to infrared ray sensor 7, and infrared ray sensor 7 detects the Temperature Distribution of bottom surface 2a by opening portion 2d thus.
Thus, as shown in figure 14, the visual field C that infrared ray sensor 7 is undertaken by opening portion 2c detecting is different from the visual field N that infrared ray sensor 7 is undertaken detecting by opening portion 2d, the Temperature Distribution in the different visual field therefore detected.Specifically, the visual field C that the solid line in Figure 14 is described is equivalent to the visual field that infrared ray sensor 7 is undertaken by opening portion 2c detecting, and is equivalent to the visual field N that dotted line is described the visual field that infrared ray sensor 7 undertakies by opening portion 2d detecting.In addition, visual field C and visual field N is set to some and staggers, but the visual field of the equal angular of respective similar elements has at least a part overlapping substantially.That is, the beginning angle of the infrared ray sensor 7 when starting the detection of 1 round when the situation of being undertaken observing by opening portion 2c from be different when being detected by opening portion 2d.
Below, the method for the shape of the heating object dimensionally detected in the heating cabinet of heating device is described.
First, when user the food of normal temperature to be put in heating cabinet 2 and press the operation button 15 start to heat time, control device 8 brings into use infrared ray sensor 7 to detect the Temperature Distribution in heating cabinet 2 by opening portion 2c.Now, when heating normal temperature food, at the heating initial stage, infrared ray sensor 7 cannot differentiate the shape of food and load position etc.
This is because the temperature of the temperature of food and bottom surface 2a not there are differences.Therefore, at the heating initial stage, control device 8 is aimed at opening portion 2c and is configured infrared ray sensor 7.Afterwards, motor 7c to infrared ray sensor 7 carry out rotary actuation come detected temperatures distribution.Thus, the temperature of food rises along with heating.
Compare with the wall of heating cabinet 2 with container, bottom surface 2a, the temperature of food more easily rises.Therefore, when the temperature of food rises to a certain degree (such as rising 10 DEG C relative to initial stage temperature), the size of food and the mounting position of food can be differentiated.
Control device 8, at the end of the detection detecting 1 round that food temperature rises, drives sliding driving device 24, and being slided by infrared ray sensor 7 is driven into the position of opening portion 2d.Afterwards, control device 8 utilizes motor 7c to carry out rotary actuation to infrared ray sensor 7 in the position of opening portion 2d, carry out the detection of 1 round.
Afterwards, control device 8 drives sliding driving device 24 again, and being slided by infrared ray sensor 7 is driven into the position of opening portion 2c.Afterwards, in the position of opening portion 2c, rotary actuation is carried out to infrared ray sensor 7 as described above, detect the Temperature Distribution in heating cabinet 2.
Then, Figure 15 A to Figure 15 C and the method for Figure 16 A to Figure 16 C to the shape of the heating object three-dimensionally detected in the heating cabinet of heating device is used to be specifically described.Figure 15 A to Figure 15 C is the figure of the detection of the infrared ray sensor that this heating device is described.Figure 16 A to Figure 16 C is the figure of the detection of the infrared ray sensor that this heating device is described.
First, use infrared ray sensor, by opening portion 2c for the low square square position P of the height shown in the high cup O of the height shown in Figure 15 A and Figure 16 A, detected temperatures distributes.In this situation, infrared ray sensor 7 detects the Temperature Distribution shown in Figure 15 B and Figure 16 B.Now, from Figure 15 B and Figure 16 B, highly high cup O and highly low square square position P is judged as identical article.
Its reason is: according to the testing result of the Temperature Distribution obtained by opening portion 2c, can only judge that container projects to the shape of infrared ray sensor 7 two-dimensionally.Its result, can not judge that the container that cross section is little and highly high or cross section are greatly and highly low container, and correctly can not differentiate the mounting position of container.That is, can not the cup O shown in process decision chart 15A whether be placed on the square square position P shown in central authorities, Figure 16 A whether be placed on left side.This can not grasp the identical principle of relief situation based on people well with during an eye observation object.
Therefore, drive sliding driving device 24, infrared ray sensor 7 is moved to the position of opening portion 2d from opening portion 2c, detect the Temperature Distribution of the container in heating cabinet 2.Now detect, the cup O shown in Figure 15 C is different with the Temperature Distribution of the square square position P shown in Figure 16 C.This is because in the situation of being undertaken detecting by opening portion 2c with when being undertaken by opening portion 2d detection, the position relationship between container from infrared ray sensor 7 is different.
Specifically, as shown in figure 15 c, the Temperature Distribution of cup O is detected as and tilts towards the front of heating device main body 1.On the other hand, as shown in figure 16 c, the shape of the Temperature Distribution of square square position P does not substantially change compared with the Temperature Distribution of cup O, but is detected as the back sweep of a part towards heating device main body 1 of Temperature Distribution.
That is, the cup O of Figure 15 C like that highly high container be detected as: compared with the testing result obtained by opening portion 2c, in the testing result obtained by opening portion 2d, towards the front of heating device main body 1 to inclination.
Therefore, each Temperature Distribution detected is compared, the height of container in heating cabinet 2 and food, sectional area and mounting position can be differentiated by opening portion 2c and opening portion 2d.This is identical with following principle: when people observes object by eyes, can utilize and carry out solid seizure from parallax during two viewing point.
Below, to differentiating the height of food, the fundamental order of sectional area and mounting position is described.
First, the result detected by opening portion 2c and the result of Temperature Distribution that detected by opening portion 2d are compared, the part being partial to heating device main body 1 front is judged to be the height of food.
Then, the part beyond the part being judged as determined height is judged to be the width of the sectional area of food.
Finally, the depth of food is judged to be the depth of the sectional area of food, being multiplied with depth by width judges sectional area.And be judged to be, represent the mounting position of the Range Representation food selected of sectional area.
Such as, the width Q of the left and right directions being partial to the part in heating device main body 1 front, compared with the scope (representing by the scope impaled by thick line in Figure 15 C) being detected as food in Figure 15 B, is judged to be the height of food by situation about being detected like that by Figure 15 C.Then, the left and right width R of the part be not included in the width Q of Figure 15 C is set to the width of the sectional area of food, the depth S of the fore-and-aft direction of food is set to the depth of the sectional area of food, sectional area is judged to be width R × depth S.In addition, the scope of width R × depth S is judged to be the mounting position of food.
On the other hand, the scope (scope of blacking in Figure 16 B is the scope represented by scope impaled with thick line in Figure 16 C) being detected as food in situation about detect Figure 16 C like that and Figure 16 B compares.In this situation, there is not the part being partial to heating device main body 1 front, be therefore judged to be that the height of food is very low.
Then, the left and right width deducting the part after height from the part being detected as food is judged.In this situation, owing to there is not height component, therefore, the left and right width T being detected as the channel floor of food is judged to be the width of the sectional area of food.Further, the depth U of the fore-and-aft direction of food is set to the depth of the sectional area of food, the sectional area of food is judged to be width T × depth U.In addition, the scope of width T × depth U is judged to be the mounting position of food.
As mentioned above, according to the present embodiment, by detecting at opening portion 2c and 2d place, opening portion infrared ray sensor 7 pairs of Temperature Distribution, and its testing result being compared, the height of food, sectional area and mounting position can be detected.Thus, control device 8 can control disperser 6, adjusts add heat distribution according to the mounting position of food.Its result, can energy-conservationly, in short time, heated food efficiently.
In addition, according to the height of the food determined and sectional area, the kind of food can be classified.Such as, the liquid contained in highly high cup and the solid etc. be placed on square position can be categorized into.Thereby, it is possible to judge the liquid that heating means are different and solid, heat by the heating means of the best.
Such as, when heating liquid, infrared ray sensor 7 cannot detect the temperature of liquid level, and therefore most cases is the temperature that have detected the container wall lower than the fluid temperature of reality.Therefore, when being judged to be liquid, after the temperature in container somewhere reaches heating target temperature, stopping heating immediately, thus make the temperature of liquid close to heating target temperature.
On the other hand, when heating solid, most cases is that the temperature of central part does not have the temperature near the surface of solids to rise soon.Therefore, when being judged to be solid, even if the temperature in container somewhere reaches heating target temperature, also to proceed heating momently, making the temperature of the surface temperature of solid and central part all close to heating target temperature thus.
In addition, when being judged to be that food is less, preferably heating with the lower heat that adds, therefore adjusting according to the volume of food and adding heat.Thereby, it is possible to the sharply heating of food is prevented trouble before it happens.
That is, according to the present embodiment, by differentiating the kind of the heating objects such as food and size and changing the method for computer heating control, can not occur to heat food in over-heating and underheated situation.
On the other hand, when heating object is frozen food etc., the temperature contrast of bottom surface 2a and frozen food is comparatively large, therefore judges the shape of heating object at the heating initial stage.Now, detect if carry out solid in the 2nd round of infrared ray sensor 7 and the detection of the 3rd round, then can at the three-dimensional shape of stage discretion food more early.Thereby, it is possible to control heating means according to three-dimensional shape, therefore, it is possible to carry out more appropriate heating to frozen food etc.
As discussed above, according to the present embodiment, by making infrared ray sensor 7 detected temperatures distribution slidably, the height of heating object can be detected and carry out best computer heating control according to heating object.Its result, can realize more efficiently to the heating device that the heating objects such as food heat.
In addition, in the present embodiment, the displacement of sliding to make infrared ray sensor 7 is illustrated for about 2mm, but is not limited thereto.Such as, as long as be more than the width in the minimum visual field of infrared ray sensor.Make the testing result of the heating object at two opening portions place different fully thus, therefore the discrimination precision of height is uprised.Its result, can realize the shape differentiating heating object accurately, thus more efficiently carries out the heating device that heats.
In addition, when from two diverse locations measurement Temperature Distribution, as the 1st method, there is following method: whenever 1 angle in rotary moving, infrared ray sensor 7 is slided mobile, repeatedly perform this step (slip of the rotation of 1 angle and 2 times is moved and needed repeatedly to perform 10 times).On the other hand, as the 2nd method, there is following method: after the detection having carried out 1 round, make infrared ray sensor 7 slide mobile (slip of the rotation of 10 angles and 2 times is moved, and does not need to carry out slips movement repeatedly).In this situation, compared to the 1st method, the 2nd method significantly can reduce the mobile number of times of slip of infrared ray sensor 7, is therefore preferred.Thereby, it is possible to promptly detect the temperature of food with shorter interval.Its result, can realize the heating device that can stop rapidly heating crossing heating preventing food.
Below, the induction heating cooking instrument of other examples of embodiments of the present invention 2 is described.
That is, in the heating device shown in Figure 11, be set to following structure: light-emitting device 11 illustrated in embodiment 1 is set in the mode covering whole bottom surface 2a, and utilize the infrared ray sensor 7 with sliding driving device 24 to detect food.Thereby, it is possible to the shape that effectively identify food same with embodiment 1, and infrared ray sensor 7 can be made to carry out, and slip is mobile carries out solid detection to food.
Now, also can limit the drive amplitude of infrared ray sensor 7, solid be carried out to food and detects.In this situation, the place that infrared ray sensor 7 is undertaken detecting by opening portion 2c and opening portion 2d is different.Therefore, be detection range when 2d place, opening portion is detected by the drive amplitude of infrared ray sensor 7 from the scope change carrying out making limit at opening portion 2c.That is, when the temperature of food rises uniform temperature (such as 10 DEG C), infrared ray sensor 7, after the detection of 1 round of infrared ray sensor 7 terminates, is moved to the place corresponding with the position of opening portion 2d by control device 8.
The heating device of other examples according to the present embodiment, limits the visual field of infrared ray sensor 7 according to the shape of heating object, can detect thus with the solid of carrying out food shorter detection time.Thereby, it is possible to realize the heating device can cooking out savoury food quickly.
In addition, in the present embodiment, as sliding driving device 24, be illustrated for solenoid, but be not limited thereto.Such as, infrared ray sensor can be driven with motor or other drive sources etc.
In addition, in the present embodiment, describe the example of infrared ray sensor 7 movement between these two opening portions of opening portion 2c and opening portion 2d, but be not limited thereto.Such as, also can be the structure compared with big uncork portion comprising opening portion 2c and opening portion 2d.When compared with big uncork portion, in order to stop microwave leakage to infrared ray sensor side, preferably noise shielding structure is set on the drive division of infrared ray sensor 7.Now be set to such structure: first, when infrared ray sensor 7 is positioned at the position corresponding to opening portion 2c, noise shielding structure be positioned at be sheltered the position not comprising the part of opening portion 2c of oral area; Further, when infrared ray sensor 7 is positioned at the position corresponding to opening portion 2d, noise shielding structure is positioned at be sheltered the position of the opening portion beyond oral area 2d.Thus, in the detection of infrared ray sensor 7, the harmful effect of noise can be prevented.
In addition, in the present embodiment, describe the example of top opening portion 2c being arranged at the front-rear center of bottom surface 2a, but be not limited thereto.Such as, other part places such as the back side, end face of heating cabinet 2 can be also arranged at.Now, can be make opening portion 2d than opening portion 2c more by the structure of the nearby side of heating device main body 1, opening portion 2c and opening portion 2d must be configured at phase co-altitude.
(embodiment 3)
Figure 17 is the figure of the important part structure of the heating device that embodiment of the present invention 3 is described.
The heating device of embodiment 3 is different from the heating device of embodiment 1 in following: employ the pharoid of wire as light-emitting device 19, and be arranged at the end face 2e in heating cabinet 2.In addition, other structures are identical with embodiment 1, therefore omit detailed description.
As shown in figure 17, light-emitting device 19 is by least radiating infrared light and forming in the pharoid of wire luminescence.Further, light-emitting device 19 is configured to: the roughly front and back centre of part luminous in heating cabinet 2 near the end face 2e of heating cabinet 2 is exposed.In addition, the light-emitting device 19 be made up of pharoid is also used as radiation heating heater food being given to Jiao Hen etc.
In this case, be following structure: the light radiated from light-emitting device 19 reflects at bottom surface 2a, and utilizes the light after infrared ray sensor 7 detection of reflected.Now, bottom surface 2a is preferably made up of following material: high to the infrared light reflectance of radiating from light-emitting device 19, such as, as mirror, carry out the material be made up of metals such as aluminium of mirror-reflection; Or, by the small hollow ball of arranged glass from the teeth outwards and the pellicular cascade of the glass bead layer, prism or the macromolecular material that obtain is the material that sandwich construction improves reflectivity.
Below the action of the heating device of present embodiment and effect are described.Elemental motion is identical with embodiment 1, is therefore described in detail to difference.In addition, below, the mode that the light-emitting device illustrated in embodiment 1 is in bottom surface 2a is designated as illumination mode, the light-emitting device illustrated is in the mode of end face 2e is designated as reflection mode and is described in present embodiment.
Below, from three aspects, Figure 18 to Figure 20 C is used to be described from the different of reflection mode illumination mode.Figure 18 is the figure of the testing result of the infrared ray sensor of the heating device that embodiment of the present invention 3 is shown.
First, in the action when identifying shape of food, illumination mode is described from the different of reflection mode.
When illumination mode, as used in embodiment 1, Fig. 7 A to Fig. 7 C illustrates, control device 8 calculates the difference of the Temperature Distribution that infrared ray sensor 7 detects when the luminous and extinguishing of light-emitting device 11, detects the shape of food.
On the other hand, when the reflection mode of present embodiment, the light that light-emitting device 19 sends reflects on the 2a of bottom surface.Further, by with the reverberation after infrared ray sensor 7 detection of reflected, the shape of food is identified.
But because light-emitting device 19 is pharoids of wire, therefore the intensity of reverberation is uneven according to the place of bottom surface 2a.That is, as shown in figure 18, such as, when not loading any article in heating cabinet 2, infrared ray sensor 7 detects: the intensity of reverberation is stronger in the front and back centre of bottom surface 2a, and in the position close to infrared ray sensor 7, reverberation is stronger.
Therefore, first, the reverberation under the state not loading any article in heating cabinet 2 is stored as fundamental reflection Temperature Distribution by control device 8.Further, control device 8 is compared by the Temperature Distribution to fundamental reflection Temperature Distribution and when making light-emitting device 19 luminous and detects shape of food.
That is, the difference of illumination mode and reflection mode comes from that the position of light-emitting device is different thus the Temperature Distribution detected is different.
That is, in illumination mode, the light-emitting device 11 being arranged at 2a side, bottom surface is luminous, even if the plate therefore in heating cabinet 2 or container reflect, reverberation is also reflect on the direction being difficult to arrive infrared ray sensor 7.
On the other hand, in reflection mode, the light-emitting device 19 be arranged near the end face 2e in heating cabinet 2 is luminous, and the light ratio after therefore reflecting on plate or container is easier to arrive infrared ray sensor 7.Therefore, when making light-emitting device 19 light, except the infrared light of plate, container and food radiation, also add the infrared light reflected by plate or container, therefore compared with illumination mode, easily with higher intensity detection to temperature.Its result, compared with Temperature Distribution when extinguishing with making light-emitting device 19, the temperature difference that whole bottom surface 2a detects all becomes large.That is, when reflection mode, owing to all producing larger temperature difference at any some place, even if the difference of Temperature Distribution when therefore calculating the luminous and extinguishing of light-emitting device 19, the shape detecting food is also difficult to.
But the fundamental reflection Temperature Distribution under the state that there are not any article in heating cabinet 2 has larger difference with Temperature Distribution when being configured with food, therefore by comparing with fundamental reflection Temperature Distribution, can detect the shape of food.
But, under all needing the state that there are not any article in heating cabinet 2 before heating, make light-emitting device 19 luminescence carry out detected temperatures distribution, so convenience is low at every turn.Therefore, detect fundamental reflection Temperature Distribution in advance and be saved in control device 8, thus can convenience be improved.But for detect at predetermined initial stage temperature and for the fundamental reflection Temperature Distribution of preserving, when the initial stage temperature in heating cabinet is different, Temperature Distribution changes, and therefore produces difference with fundamental reflection Temperature Distribution.
In order to solve the problem, the temperature detected when extinguishing according to light-emitting device 19 corrects fundamental reflection Temperature Distribution.Such as, when light-emitting device 19 extinguishes, if the temperature of certain some group is higher, is then corrected to and fundamental reflection Temperature Distribution is also uprised.Specifically, fundamental reflection Temperature Distribution is corrected according to the detected temperatures of the own temperature detecting sensor 7e of infrared ray sensor 7.That is, when the temperature in heating cabinet 2 uprises, the temperature of own temperature detecting sensor 7e also uprises, and is therefore corrected to and fundamental reflection Temperature Distribution is also uprised.Thus, even if when with infrared ray sensor 7 detection of reflected light, the shape of food also can be identified while the 1st round of infrared ray sensor 7 terminates.
Then, the difference of Figure 19 A to Figure 20 C to the shape that infrared ray sensor 7 detects in illumination mode and reflection mode is used to be described.
Figure 19 A to Figure 20 C is the figure of the detection of the infrared ray sensor of the heating device that embodiment of the present invention 3 is described.
In illumination mode, when being placed in heating cabinet 2 by container J high for the height shown in Figure 19 A, the infrared light shown in Figure 19 C incides infrared ray sensor 7, the Temperature Distribution shown in Figure 19 B detected.Now, lower owing to the part place temperature represented in the blacking of Figure 19 B being detected, therefore, it is possible to detect the shape of food.That is, the size of food can only be detected.
On the other hand, when reflection mode, as shown in FIG. 20 A, when being placed in heating cabinet 2 by container J high for the height identical with Figure 19 A, the Temperature Distribution shown in Figure 20 B is become.Now detect, compared with Figure 19 B, the point that the blacking that temperature is low represents becomes and expands the shape after K part towards infrared ray sensor 7 side.This is because as shown in Figure 20 C, the light (representing with the dotted line in Figure 20 C) that the part of should not place any article at the script of bottom surface 2a carries out reflecting is blocked by highly high container J.Therefore, with the height of container J correspondingly, as shown in fig. 20b, create the part K after the such expansion of shade towards infrared ray sensor 7 side.
In addition, when being configured with light-emitting device 19 and infrared ray sensor 7 as shown in FIG. 20 A, the enlarged K as shade necessarily produces in infrared ray sensor 7 side, and can not in the upper expansion of the fore-and-aft direction of bottom surface 2a (door direction).Therefore, for identifying the action of detection range after shape of food, restriction infrared ray sensor 7 without any impact.
Then, Figure 20 B and Figure 21 difference to the control after identify shape of food in illumination mode and reflection mode is used to be described.
Figure 21 is the figure of the testing result of the infrared ray sensor of the heating device that embodiment of the present invention 2 is shown.
In reflection mode, as used above, Figure 20 B illustrates, such as, when highly high shape of food, detect: with highly correspondingly, create towards infrared ray sensor 7 side and expand largely.But when starting to heat, the part that programming rate is large by heating is not the part of shade, but the part of physical presence food.Therefore, when food during heating, can be differentiated which part is equivalent to shade by heating to a certain extent.
That is, actual start to heat time, fast in the some place rate of rise in temperature represented with oblique line of Figure 21, and the rate of rise in temperature of the part K as shade detected shown in Figure 20 B is slow, therefore, it is possible to easily differentiate which part is equivalent to shade.In addition, generally speaking, plate is faster than the rate of rise in temperature of bottom surface 2a, and the rate of rise in temperature of food or flowing fluid ratio plate is fast, therefore than being easier to whether differentiation is shade.Its result, can judge that the part K shown in Figure 21 is shade, therefore, it is possible to determine the height of container J.
On the other hand, in illumination mode, as shown in fig. 19 c, if the aspect ratio of the container J straight line that connects the left end of bottom surface 2a and infrared ray sensor 7 is high, the height that then can only determine container J is more than the height detected, therefore correctly can not differentiate the height of container.
But reflection mode according to the present embodiment, correctly can differentiate width and the height of the fore-and-aft direction of container J.Its result, even the narrower to a certain extent and container J that aspect ratio is higher of width, easily can be judged to be it is contain the container into liquid.
Further, when control device 8 is judged to be liquid, control device 8, when reaching heating target temperature, stops heating immediately.
But when container higher being to a certain extent placed on the position from the to a certain degree above distance of infrared ray sensor 7, infrared ray sensor 7 cannot detect liquid self.In this situation, the temperature of the outside wall surface of infrared ray sensor 7 inspection instrument is therefore high than the temperature of liquid self.Therefore, to contain heat into the liquid to highly high container time, special needs stop rapidly heating.
Therefore, reflection mode according to the present embodiment, by differentiating according to height and width the container contained into liquid, can reduce heating target temperature in the moment being aware of height.Its result, can prevent containing crossing of the liquid in highly high container etc. and heat.
In addition, when containing the container into the mug that the aspect ratio of liquid is lower is such, due to less with the shape difference of little basin etc., be therefore difficult to differentiate.But in this situation, the height due to container is low and width is wider, therefore, it is possible to directly detect the temperature of liquid self, so larger problem can not be produced.
In addition, when utilizing the reflection mode of present embodiment successfully to determine the height of such as container, the placement location of container and food can be grasped.Further, when being aware of mounting place, control device 8 can regulate the rotary speed of disperser 6, stop direction and dwell time, controls the heating in mounting place, such as, makes heating grow.Its result, can realize the heating device heated more efficiently food.
Below, the control in the action of the identification shape of food of the heating device of present embodiment is described.
First, light-emitting device 19 is lighted (luminescence), carry out the detection of 1 round with infrared ray sensor 7.Then, light-emitting device 19 is extinguished, carry out the detection of 1 round with infrared ray sensor 7, identify the shape of food.
But, when identify do not heat completely during shape of food, with in the past from compared with the heating device just carrying out heating at first, the detection time, such as about 20 seconds that postpone 2 rounds start heating.
Therefore, in the present embodiment, allow light-emitting device 19 light (luminescence) from the detection of the 1st round, namely and carry out with infrared ray sensor 7 just starting heating stage of detecting.Now, except the situation that situation and what of the very little food of mounting is not all placed, under the heating of 20 seconds degree, the temperature not larger change of food.Therefore, although the precision detecting shape of food reduces slightly, do not have problems in practical.Its result, can to heat with the in the past roughly the same time, therefore, it is possible to shorten the heat time of food.
Below, know method for distinguishing to the 2nd shape of food in the heating device of present embodiment to be described.
As mentioned above, when the reflection mode of present embodiment, identify that the 2nd shape of food of shape of food knows method for distinguishing for comparing the Temperature Distribution in heating cabinet 2 when the lighting and extinguish of light-emitting device 19, be not easy to produce temperature difference, be therefore difficult to detect food.Its reason is: light is reflected on wall of a container face etc., and therefore the temperature of container wall is also detected as the temperature higher than actual temperature.
But for food, infrared ray is absorbed by food, the degree of therefore carrying out reflecting is extremely low, is generally negligible grade.That is, if compared Temperature Distribution during the lighting and extinguish of light-emitting device 19, then infrared ray sensor 7 can not detect container, but only detects the shape of food.Such as, for the liquid contained in highly high container, when liquid level can not be observed from infrared ray sensor 7, know in method for distinguishing in the 2nd shape of food, be detected as and there is not food (cannot see).
On the other hand, above-mentionedly compare the method for carrying out shape of food identification (being denoted as afterwards " the 1st shape of food identification ") with fundamental reflection Temperature Distribution and can identify the shape of food comprising the containers such as feeder.Therefore, even the liquid contained in highly high container also can identify the shape of food.
Therefore, if utilize the relation being known the shape of food that method for distinguishing determines by the 1st shape of food identification and the 2nd shape of food, then the kind of food can be judged more accurately.
Such as, contain liquid in highly high container and know in the 1st shape of food and be judged as thin and tall in method for distinguishing, and know in method for distinguishing to be judged as in the 2nd shape of food and there is not food.Be placed into the beefsteak on highly low plate etc. and know in the 1st shape of food the shape determining plate in method for distinguishing, and know the shape determining beefsteak in method for distinguishing in the 2nd shape of food.
In addition, the global shape determining rice bowl, little basin and food in method for distinguishing known by the vegetables containing little basin or the rice containing rice bowl etc. in the 1st shape of food, and knows in method for distinguishing in the 2nd shape of food, only determines vegetables and rice.
In addition, in embodiment 1, heat carrying out and the large part of temperature rising degree is judged to be the place of food, but if use the 2nd shape of food to know method for distinguishing, then can just determine the shape of food at the heating initial stage.Its result, earlier can identify the scope of food, by changing the method for computer heating control according to the food variety utilizing said method to infer, can carry out appropriate heating to food.
As the object lesson of method for heating and controlling, such as when compared with pot foods, control device 8 reduces to add heat, controlling, carrying out Optimal Control to the heat distribution that adds in heating cabinet 2 to possessing the disperser 6 accordingly with the place to place of food with the antenna of directive property.In addition, for the food contained in highly high container, control device 8 corrects and controls heating target temperature.
In addition, when the multiple food disperseed, control device 8 such as controls as follows: the heating also extending certain hour after heating target temperature being detected.When the food that internal temperature easily rises, control device 8 corrects and controls heating target temperature.
Below, the control after shape of food that identifies of the heating device of present embodiment is described.
In the present embodiment, following aspect is different from embodiment 1: the detection range of infrared ray sensor 7 is restricted to the scope to add certain columns (such as 2 arrange) centered by the scope of the shape of food identified after, controls.
That is, be such structure: the point that to add with the boundary line of food and bottom surface 2a in detected object be the visual field.Thereby, it is possible to detect the heating target temperature of food more reliably.
Further, have passed through certain hour after starting heating after, remove the detection range restriction of infrared ray sensor 7, whole bottom surface 2a is detected as detection range.This is because when identifying the shape of food, the food of the surface area below the visual field with predetermined point is corresponding to the situation being not recognized as food when limiting detection range.
Thus, the temperature of the pot foods be not detected at the heating initial stage rises after heating starts, and can detect whether its heat makes the temperature of container or bottom surface rise.Its result, can prevent from heating compared with the exception of pot foods, realize safer heating device.
In addition, will remove infrared ray sensor 7 detection range restriction and after opportunity of changing to the detection of whole bottom surface 2a being set to the time (such as 1 minute) rising to predetermined temperature compared with the temperature of pot foods.Therefore, when the heating of food terminates within the above-mentioned time (1 minute), do not remove the detection range restriction of infrared ray sensor 7.In addition, when the temperature that the heating of food is near completion (such as within heating target temperature 10 DEG C) being detected, the detection of whole bottom surface 2a is not changed to yet.
Below, to the heating device of present embodiment recognize shape of food after reduce the detection range of infrared ray sensor 7 advantage be described.Substantially identical with embodiment 1.
1st, the temperature of food can be detected with shorter interval.This can be used in kind judgement of food and the heating stopping etc. compared with pot foods, and therefore the preferred comparatively early stage from heating of food performs.
2nd, by shortening the assay intervals of food temperature, detecting heating target temperature as quickly as possible, reducing over heating as much as possible.This, when the temperature of food is close to heating target temperature, can give play to significant effect.
In addition, when the midway of heating food expands the detection range of infrared ray sensor 7, the 1st decreased effectiveness.But, if reduce detection range in the stage that the temperature of food is heated to a certain degree, then can obtain the 2nd effect.
That is, such as, when infrared ray sensor 7 has detected the temperature within distance heating target temperature 10 DEG C, whole bottom surface 2a do not detected, can realize energy-conservationly thus, heat the heating device savoury food in short time.
Below, process when there occurs power failure in the heating device of present embodiment in heating process is described.
First, when heating the power failure that midway there occurs in certain hour, when after service restoration, control device 8 according to the signal detection from power cut detection device 9 to the situation that power failure occurred.In addition, in addition to the above, be detected as the situation of power failure as power cut detection device 9, also there is the situation that the power supply pulling out heating device also carries out being energized again.In this situation, control device 8 after service restoration, or after restarting energising, proceeds heating.
But during power failure, food or plate there occurs movement sometimes.That is, finish the shape recognition of food at control device 8 and after reducing the detection range of infrared ray sensor 7, when power failure being detected, if food etc. there occurs movement in heating cabinet 2, the temperature of food sometimes cannot be detected.
Therefore, when power failure being detected, first, the detection range of infrared ray sensor 7 is reverted to whole bottom surface 2a by control device 8, and detected temperatures distributes.Further, control device 8, before the heating of food terminates, does not reduce the detection range of infrared ray sensor 7 and detects.Thereby, it is possible to realize the heating device also can used safely when having a power failure.
As discussed above, according to the present embodiment, use the light-emitting device 19 being arranged at heating cabinet top, utilize the shape of the reverberation identification food on bottom surface, the shape of normal temperature food etc. can be differentiated thus.Thereby, it is possible to according to the size of food or position, the best heat distribution that adds added in heat and heating cabinet is utilized to carry out high-efficiency heating to food.Its result, can prevent crossing heating and heating and good to eat food of food.In addition, by the shape information of combined food and the Detection Information of temperature, the height of the heating objects such as food can be judged and load position accurately, therefore, it is possible to more efficiently heat food.
In addition, according to the present embodiment, while starting in heating, identify and differentiate the shape of food, with the time as in the past, food can being heated.Its result, can realize utilizing the heating corresponding to food, heat the heating device savoury food in short time.
In addition, according to the present embodiment, by detecting the height of food, the kind of food can be differentiated.Thereby, it is possible to correspondingly select more suitably heating means with food.Its result, what can realize preventing food crosses heating, and energy-saving safe ground, short time carry out the heating device that heats.
In addition, according to the present embodiment, to store and the fundamental reflection Temperature Distribution of preserving identifies and the shape of food can identify the shape of food at the end of the detection of the 1st round of infrared ray sensor by using.Its result, even if just start heated food from the detection of the 1st round of infrared ray sensor, also can identify the shape of food accurately.
In addition, according to the present embodiment, even if when containing in highly high container into liquid, also can easily identify and predicting shape.Its result, by correcting heating target temperature accordingly with the liquid in highly high container, can reduce the problems such as liquid after the heating splashes.
In addition, according to the present embodiment, by light-emitting device being configured at the top of bottom surface, compared with light-emitting device being configured at the situation of oblique upper, bottom surface etc., the reflection on bottom surface is easily formed.Its result, can with the shape of higher accuracy detection food.
In addition, according to the present embodiment, by using the light-emitting device of wire, compared with spot light, light emitting region becomes large, therefore, it is possible to more efficiently produce reflection on bottom surface.Therefore, less light quantity is namely used also can to detect the shape of food accurately.
In addition, according to the present embodiment, also light-emitting device is used as heater, the kind of the cooking can be increased thus.Its result, can realize the band baking nouvelle cuisine of mesh and the SHAPE DETECTION of normal temperature food such as the grill cooking at low cost simultaneously.
In addition, according to the present embodiment, not heating when carrying out the detection of the 1st round of infrared ray sensor 7 making light-emitting device 19 luminous, even therefore less food, when the 2nd round detects, the rising of temperature also can be made less.Its result, can improve the accuracy of detection of shape of food.In addition, also can heat when the detection of the 1st round of infrared ray sensor 7.In this situation, heat with low-down power (such as effective power 150W).Now, the temperature of food can not sharply rise, therefore, it is possible to obtain same effect.Further, the detection of the 2nd round of infrared ray sensor 7 can be heated to low output (such as effective power 300W) always.Now, as described above, the temperature of food can not sharply rise, therefore, it is possible to detect the shape of food accurately.And, the heating of the food (such as frozen food, partly to thaw product or a small amount of food) of wishing not carry out heating with high-power at the heating initial stage can be tackled.
In addition, in the present embodiment, the temperature describing certain the some group detected in the 2nd round according to infrared ray sensor 7 corrects the example of fundamental reflection Temperature Distribution.In this situation, sometimes until the detection of the 2nd round of infrared ray sensor 7 terminates, also unidentified go out the shape of food.
Therefore, can at the heating initial stage of food, temperature according to the own temperature detecting sensor 7e of infrared ray sensor 7 corrects fundamental reflection Temperature Distribution, compare with the result of the detection of the 1st round detected by infrared ray sensor 7 when not heating, implement the temporary shapes identification of food.Thus, although the accuracy of detection of shape of food reduces, the size and shape of food can be judged in the initial stage of heating with precision to a certain degree.Its result, according to the shape of food and area, more safely, in short time can heat.Specifically, when food has the area to a certain degree and volume of measuring is many, heat with high power (such as effective power 1000W) from the 2nd round of infrared ray sensor 7 detects.On the other hand, when food has the area to a certain degree and volume of measuring is few, heat with low output (such as effective power 150W) from the detection of the 2nd round of infrared ray sensor 7.
But, when the temperature of the own temperature detecting sensor 7e of infrared ray sensor 7 higher (such as more than 80 DEG C), do not carry out temporary shapes identification.Its reason is: probably just carried out other cookings before, the such as grill cooking, oven cook, heating etc., therefore the Temperature Distribution of most cases bottom surface 2a is also uneven, even if so such as implement temporary shapes identification, accuracy of detection is also lower, and the possibility of error detection is high.
In addition, in the present embodiment, describe the example utilizing the own temperature detecting sensor 7e of infrared ray sensor 7 to carry out the correction of fundamental reflection Temperature Distribution, but be not limited thereto.Such as, also can use the temperature of temperature sensor 12 in the room temperature detecting sensor 18 be configured on door 3 or the storehouse be configured in heating cabinet 2, carry out the correction of fundamental reflection Temperature Distribution.
Below, with reference to Figure 17, and the heating device of Figure 22 to other examples of embodiment of the present invention 3 is used to be described.
That is, the heating device shown in Figure 17 is following structure: utilize the infrared ray sensor 7 with sliding driving device 24 illustrated in embodiment 2 to detect food.
Therefore, the details of Figure 22 to the control action in the process of the identification shape of food of the heating device of other examples of present embodiment is used to be described.Figure 22 is the Sequence chart of the heating device of other examples of this embodiment 3.
First, control device 8, in order to identify shape of food, is made light-emitting device 19 light (luminescence), is carried out the detection of 1 round with infrared ray sensor 7 by opening portion 2c.Differentiate shape of food thus.
Then, control device 8 utilizes sliding driving device 24 that infrared ray sensor 7 is moved to the position corresponding with opening portion 2d.Then, under the state making light-emitting device 20 light, the detection of 1 round is carried out by opening portion 2d.Thus, the solid of carrying out food detects.
Now, when the detection of the 1st round of being undertaken by opening portion 2c is terminated, infrared ray sensor 7 is utilized to differentiate the shape of food.Therefore, when infrared ray sensor 7 carries out the detection of 1 round by opening portion 2d, the detection range of infrared ray sensor 7 can be restricted to the scope comprising food.Its result, can carry out solid to food in short time and detect.
Afterwards, control device 8 makes light-emitting device 20 extinguish.Further, control device 8 drives heater 4 to start the heating of food.
The heating device of other examples according to the present embodiment, in the shape of the heating object of heating initial stage identification normal temperature, can implement three-dimensional detection in the stage comparatively early.Thereby, it is possible to the height of differentiation heating object, sectional area and mounting position etc., carry out the heating corresponding with the kind of heating object, shape and place to place.Its result, can realize can carrying out best heating, energy-conservation heating the heating device savoury food in short time heating object.
In addition, in other examples of present embodiment, describe and perform the three-dimensional example detected in the detection of the 1st round at 2d place, opening portion, but be not limited thereto.Such as, also can carry out solid to detect in the detection of the 2nd round at 2d place, opening portion or detection afterwards.
In addition, in other examples of present embodiment, describe when the detection of the 1st round at 2d place, opening portion, the example in the visual field of restriction infrared ray sensor 7, but be not limited thereto, also can carry out the detection of whole bottom surface 2a.
(embodiment 4)
Figure 23 is the figure of the important part structure of the heating device that embodiment of the present invention 4 is described.
The heating device of embodiment 4 is different from the heating device of embodiment 1,2 in following: use the point source of light of the side surface upper part being arranged at heating cabinet 2 as light-emitting device 20, have the structure making the light of light source reflex to the bottom surface 2a of infrared ray sensor 7.In addition, other structures and embodiment 1,2 identical, therefore omit detailed description.
As shown in figure 23, light-emitting device 20 by least radiate infrared light and in roughly point-like (comprising point-like) luminous light source form.Further, light-emitting device 20 is such as configured at the outside of heating cabinet 2 left surface.In addition, bottom surface 2a makes the infrared light sent from light-emitting device 20 reflect towards the direction of infrared ray sensor 7, and the high shape in, corner low by central authorities is formed, such as, be made up of mortar shape.In addition, as long as light-emitting device 20 is in the position that bottom surface 2a can be utilized infrared light to be converged to infrared ray sensor 7, in the case, can any part be arranged at, can optional position be configured in.
Below the action of the heating device of present embodiment and effect are described.Elemental motion and effect and embodiment 1,2 identical, therefore difference is described in detail.
Below, Figure 24 is used to be described the control before the identification shape of food of the heating device of present embodiment.
Figure 24 is the Sequence chart of the heating device of embodiment of the present invention 4.
As shown in figure 24, first, after user presses the operation button 15, during the detection of the 1st round of infrared ray sensor 7, control device 8 performs temperature detection when not making light-emitting device 20 light.Further, after the detection of the 1st round of infrared ray sensor 7 terminates, light-emitting device 20 can be made to light (luminescence), utilize the shape of the method identification food same with embodiment 2.
In addition, when food is frozen food, the detection of the 1st round of infrared ray sensor 7 can be utilized promptly to judge frozen food.Why like this, be that the temperature of frozen food is different from the environment temperature in heating cabinet 2, even if therefore do not make light-emitting device 20 light, also can identify the shape of frozen food because when frozen food.
Further, when being detected as frozen food in the detection of the 1st round of infrared ray sensor 7, with the detection not making the mode of light-emitting device 20 luminescence carry out the 2nd round of infrared ray sensor 7.Thereby, it is possible to identify the shape of food when not making light-emitting device 20 luminescence, therefore, it is possible to energy-conservation ground and in short time food is heated.
Utilize above structure, according to the present embodiment, even if when being arranged at outside heating cabinet by the light-emitting device be made up of point source of light, the bottom surface 2a of mortar shape also can be utilized, reverberation is converged to infrared ray sensor 7 efficiently, thus identifies the shape of food.Thereby, it is possible to simple structure, what realize preventing food crosses heating, energy-conservation and heat the heating device savoury food in short time.
In addition, in the present embodiment, be illustrated for the bottom surface 2a of mortar shape, but be not limited thereto.Such as, also shown in the figure of the important part structure of other examples for illustration of this heating device of Figure 25, the bottom surface 2a of ladder segmented shape can be adopted.Thereby, it is possible to the maximization of the heating device avoiding the bottom surface 2a because of the thick mortar shape of thickness to cause, thus realize compact heating device.In this situation, the bottom surface 2a of mortar shape and bottom surface 2a convenience for user of ladder segmented shape low, therefore, the such as preferred upside at bottom surface 2a forms transmissive and crosses ultrared material, makes the mounting surface of heating object become smooth.
In addition, in the present embodiment, describe the example that light-emitting device 20 sends the infrared light identifying shape of food, but be not limited thereto.Such as, light-emitting device 20 can be set to the structure being also used as lighting device.In this situation, light-emitting device 20 preferably select and control illumination by point two stages.That is, being controlled to: carry out luminescence when identifying shape of food with high illumination, carrying out luminescence when illumination heating cabinet 2 with low-light (level).Thus, the energy-saving of heating device is achieved.
(embodiment 5)
Figure 26 is the figure of the important part structure of the heating device that embodiment of the present invention 6 is described.
The heating device of embodiment 5 is different from the heating device of embodiment 1,2 in following: be adjacent to be wholely set light-emitting device 21 with infrared ray sensor 7, and have the structure of the processing surface of bottom surface 2a being implemented to the infrared light generation retroreflecting that light-emitting device 21 is radiated.In addition, other structures and embodiment 1,2 identical, therefore omit detailed description.
Herein, retroreflecting refers to, reflects from the light of light-emitting device radiation in the direction identical with radiation direction.Further, retroreflecting processing realizes by such as forming very little prism shape or ball shape on the surface of bottom surface 2a.
That is, as shown in figure 26, light-emitting device 21 is closely set to one in the outside of the such as right flank side of heating cabinet 2 and infrared ray sensor 7, and obtains rotary actuation integratedly with infrared ray sensor 7 under the effect of motor 7c.
Further, on the surface of the retroreflecting processing by the carrying out at bottom surface 2a by the infrared light reflection to radiate from light-emitting device 21 towards bottom surface 2a to infrared ray sensor 7, identify the shape of food.
Below the action of the heating device of present embodiment and effect are described.Elemental motion and effect and embodiment 1,2 identical, therefore difference is described in detail.
In the present embodiment, being adjacent to be wholely set light-emitting device 21 with infrared ray sensor 7 side, therefore as the reflection mode of the embodiment 2 illustrated in Figure 20 A to Figure 20 C, the shade detected can not being produced when detecting shape of food.That is, the shape larger than the shape of food of reality can not be detected as embodiment 2.Therefore, it is possible to detect shape of food more accurately at the heating initial stage.
Utilize above structure, according to the present embodiment, even if there is light-emitting device outside heating cabinet, and infrared ray sensor and light-emitting device are configured at same side, also can utilize bottom surface that reverberation is converged to infrared ray sensor efficiently.Thereby, it is possible to detect shape of food exactly with simple structure.In addition, what can realize preventing food crosses heating, energy-conservation and heat the heating device savoury food in short time.
In addition, according to the present embodiment, by light-emitting device is arranged at infrared ray sensor side, the situation shape of food larger than reality being detected can be prevented.Thereby, it is possible to identify shape of food exactly at the heating initial stage, therefore, it is possible to select more appropriate heating means at the heating initial stage.Its result, can utilize the less heating means of heating to process good to eat food.
In addition, in the respective embodiments described above, describe infrared ray sensor 7 and there are 1 row, 8 infrared-ray detecting element 7b and make their 10 angles in rotary moving to measure the example of Temperature Distribution, but be not limited thereto.Such as, the quantity of infrared-ray detecting element can be beyond 8, and mobile number of times can be beyond 10 angles.Now, if increase the quantity of infrared-ray detecting element and mobile number of times, then the quantity of point to be detected increases, and can carry out careful temperature detection to bottom surface 2a.Thus, the accuracy of detection of food temperature distribution improves.
In addition, not to configure 8 infrared-ray detecting element 7b one-dimensionally, such as, can form 8 elements two-dimensionally according to modes such as 2 row yet.That is, when configuring multiple infrared-ray detecting element 7b two-dimensionally, even if number of times in rotary moving is less or do not carry out in rotary movingly also can measuring Temperature Distribution.Therefore, it is possible to shortening traveling time, the shape of food can be gone out with shorter time detecting.In addition, if when cost allows and employs the such resolution ratio of infrared C CD high infrared-ray detecting element, can more high-precision detection be carried out.
(embodiment 6)
Figure 27 is the figure of the important part structure of the heating device that embodiment of the present invention 6 is described.
The heating device of embodiment 6 the bottom surface of mounting heating object is set to rotating disk 22 in different from the heating device of embodiment 3.In addition, other structures are identical with embodiment 4, therefore omit detailed description.
That is, as shown in figure 27, in heating cabinet 2, be provided with the rotating disk 22 for loading food etc.Rotating disk 22 to be such as easily made up of through the material of microwave circular (comprising circle).In addition, rotating disk 22 is by least forming through the ultrared material of a part of scope.
Further, rotating disk 22, in heating of food, is by be arranged at outside heating cabinet 2 and the rotating driving device 23 being positioned at the downside of bottom surface 2a carries out rotary actuation substantially.
In addition, waveguide 5 is connected with heating cabinet 2 in the side of heating cabinet 2, is emitted to from the side in heating cabinet 2 by microwave via waveguide 5.
Light-emitting device 20 is fixedly arranged at the outside with the heating cabinet 2 of infrared ray sensor 7 opposition side such as with 8 infrared-ray detecting element 7b.That is, the infrared ray sensor 7 of present embodiment is different from the embodiment described above, does not carry out rotary actuation.
In addition, in the region shown in bottom surface 2a part L at least in figure 27, the infrared ray radiated from light-emitting device 20 is reflected.Now, the part L of the reflected infrared ray of bottom surface 2a such as has the rectangular shape of about about 3cm width.Further, visual field infrared ray sensor 7 being configured to infrared ray sensor 7 comprises the part L reflected infrared ray.
Below the action of the heating device of present embodiment and effect are described.Elemental motion is identical with embodiment 4 with effect, is therefore described in detail to difference.
As shown in figure 27, when user presses the operation button 15, first control device 8 starts heating.Meanwhile, control device 8 drives rotating driving device 23, and rotating disk 22 is rotated.Therefore, in the heating device of present embodiment, do not need disperser, by food being placed in rotating disk 22 and rotating, can heat equably.
Below, the method for the identification shape of food in the heating device of present embodiment is described.
First, when heating is started, control device 8 makes light-emitting device 20 luminous.Now, the infrared light rotating disk 22 radiated from light-emitting device 20 arrives the part L shown in Figure 27 of bottom surface 2a.Afterwards, the reverberation after part L place is reflected incides infrared ray sensor 7 through rotating disk 22 again.Further, shape and the Temperature Distribution of food is detected by infrared ray sensor 7.According to the method, the region reflected infrared light is only the part L of bottom surface 2a.Therefore, light-emitting device 20, compared with the respective embodiments described above, can detect with low-light (level), therefore, it is possible to perform the SHAPE DETECTION of normal temperature food with low-power consumption.
Below, the control at the end of the heating of the food in the heating device of present embodiment is described.
First, control device 8 makes the temperature of food close to heating target temperature (such as in utilization heating, within 5 DEG C of heating target temperature) when, by rotating driving device 23 movable roundabout 22, a part for food is in the detection range of infrared ray sensor 7 all the time.Now, by repeatedly carrying out the forward/reverse of rotating disk 22 or stopping the rotary actuation of rotating disk 22, food is configured in the detection range of infrared ray sensor 7.Thereby, it is possible to detect that the temperature of food reaches the situation of heating target temperature in short time, stop the heating of food.
According to the present embodiment, the structure with rotating disk 22 is utilized, even the light-emitting device of low-light (level) 20 also can identify the shape of food effectively.In addition, not needing rotary actuation and fixing infrared ray sensor 7 by using, at low cost, energy-conservationly can detect the shape of food.
In addition, according to the present embodiment, when the temperature of food reaches within 5 DEG C of heating target temperature, movable roundabout 22, makes infrared ray sensor can detect the temperature of food all the time.Thereby, it is possible to realize improve the accuracy of detection that food temperature rises, what prevent food crosses heating, and energy-conservation and carry out the heating device that heats in short time.
Below, the induction heating cooking instrument of other examples of embodiments of the present invention 6 is described.
That is, the heating device shown in Figure 27 is following structure: utilize the infrared ray sensor 7 with sliding driving device 24 illustrated in embodiment 2 to detect food.
The heating device of other examples according to the present embodiment, has the structure of rotating disk 22 by utilizing, even thus the light-emitting device 20 of low-light (level), also effectively can identify the shape of food, and the solid can carrying out food detects.That is, do not need motor infrared ray sensor 7 being carried out to rotary actuation, and drive by carrying out slip to infrared ray sensor 7, dimensionally can detect the three-dimensional shape of food.Thereby, it is possible to realize infrastructure cost low, three-dimensional shape of food can be identified and carry out the heating device that heats.
In addition, in the present embodiment, describe rotating disk 22 by the example formed through ultrared material, but be not limited thereto.Such as, hole etc. can be formed in a part for rotating disk 22, make rotating disk 22 have and make the infrared light on the 2a of bottom surface after reflection arrive the structure of infrared ray sensor 7.
In addition, in the present embodiment, describe the example of side light-emitting device 20 being configured at heating cabinet 2, but be not limited thereto.Such as, also can be arranged on the bottom surface 2a corresponding with the part L shown in Figure 27, same effect can be obtained.
In addition, in the present embodiment, describe when food temperature is close to heating target temperature, carry out the example controlled in detection range food being moved to infrared ray sensor 7, but be not limited thereto.Such as, control device 8 can after recognizing shape of food, and the driving direction etc. controlling such as rotating driving device 23 immediately carrys out moving foodstuff, and food must be in the detection range of infrared ray sensor 7.Thereby, it is possible to detect the rate of rise in temperature of food with the careful time interval.Its result, the discrimination precision of food variety improves further.
(embodiment 7)
Figure 28 is the figure of the important part structure of the heating device that embodiment of the present invention 7 is described.
The heating device of embodiment 7 is different from the heating device of embodiment 5 in following: utilize the material reflected the infrared ray of wave band to be at least partially coated with the whole upper surface of rotating disk 22.In addition, other structures are identical with embodiment 6, therefore omit detailed description.
Below the action of the heating device of present embodiment and effect are described.Elemental motion is identical with embodiment 6 with effect, is therefore described in detail to difference.
As shown in figure 28, first, reflect in the scope of the part M of the light such as infrared light among Figure 28 of the upper surface of rotating disk 22 sent from light-emitting device 20.Afterwards, the reverberation after the reflection of part M place incides infrared ray sensor 7.Further, shape and the Temperature Distribution of food is detected by infrared ray sensor 7.Now, the part M reflected infrared ray of rotating disk 22 such as has the rectangular shape of about about 3cm width.Further, visual field infrared ray sensor 7 being configured to infrared ray sensor 7 comprises the part M reflected infrared ray.
In this situation, rotating disk 22 does not exist food, incided infrared ray sensor 7 by the reverberation after part M reflection.On the other hand, rotating disk 22 exists food, due to the existence of food, infrared light can not arrive part M, and the infrared light therefore from food incides infrared ray sensor 7, thus detects the actual temperature of food.
In addition, in the present embodiment, produce the shade of food and container etc. identically with embodiment 3.Therefore, it is possible to detect the height of food etc.
According to the present embodiment, the light of light-emitting device 20 reflects at the part M place of rotating disk 22, therefore, it is possible to reduce the area carrying out the part M reflected.Thus, even the light-emitting device 20 that illumination is lower, the shape of food can also effectively be identified.Its result, can realize at low cost, energy-conservationly identify the heating device of shape of food.
Below, the induction heating cooking instrument of other examples of embodiments of the present invention 7 is described.
That is, the heating device shown in Figure 28 is following structure: utilize the infrared ray sensor 7 with sliding driving device 24 illustrated in embodiment 2 to detect food.
The heating device of other examples according to the present embodiment, has the structure of rotating disk 22 by utilizing, even thus the light-emitting device 20 of low-light (level), also effectively can identify the shape of food, and the solid can carrying out food detects.That is, do not need motor infrared ray sensor 7 being carried out to rotary actuation, and drive by carrying out slip to infrared ray sensor 7, dimensionally can detect the three-dimensional shape of food.Thereby, it is possible to realize infrastructure cost low, three-dimensional shape of food can be identified and carry out the heating device that heats.
In addition, in the present embodiment, describe whole upper surface coating waste water at rotating disk 22 to the example of the material that infrared ray reflects, but be not limited thereto.Such as, also can attach at the whole upper surface of rotating disk 22 parts etc. that infrared ray is reflected, or the surface texture reflected infrared ray is set.
In addition, in the respective embodiments described above, describe the example connecting waveguide 5 in the bottom of heating cabinet 2, but be not limited thereto, also the part beyond the bottom of heating cabinet 2 can connect waveguide 5.
In addition, carrying out in the respective embodiments described above of food inspection in the rotary actuation by infrared ray sensor 7 with sliding to drive, also can arrange and holding a concurrent post the rotary actuation of infrared ray sensor 7 and the driving mechanism of driving of sliding by motor 7c.In this situation, such as, gear A is set on motor 7c, and by the gear B of rotary actuation be that the toothed guiding piece of motion of glide direction is formed by the motion transform of gear A.Further, when carrying out rotary actuation to infrared ray sensor 7, by the control signal of control device 8, the gear A of motor 7c being engaged with gear B and driving.On the other hand, when carrying out slip to infrared ray sensor 7 and being mobile, by the control signal of control device 8, the gear A of motor 7c is engaged with guiding piece and drive.Thereby, it is possible to utilize a driving mechanism to drive infrared ray sensor 7 in rotary actuation and this both direction of driving of sliding.Its result, makes the compact conformation of infrared ray sensor 7, and can realize low cost.
Utilizability in industry
According to the present invention, information that requirement obtains the heating objects such as food carries out the firing equipment and cooking device etc. heated efficiently technical field to differentiate heating object can be applied to.
Label declaration
1,124: heating device main body
2,125: heating cabinet
2a: bottom surface
2b, 2c, 2d: opening portion
2e: end face
3: door
3a: rotating shaft
3b: door open-close detection apparatus
4: heater
5,127: waveguide
6: disperser
6a: motor
6b: blade
7: infrared ray sensor
7a: infrared detection camera lens
7b: infrared-ray detecting element
7c: motor
7d: rotating shaft
7e: own temperature detecting sensor
8: control device
9: power cut detection device
10: cooling fan
11,19,20,21: light-emitting device
12: temperature sensor in storehouse
13,129: lighting device
14: display unit
15: action button
16: handle
17: transparent panel
18: room temperature detecting sensor
22,132: rotating disk
23,133: rotating driving device
24: sliding driving device
126: magnetron
128: infrared temperature sensor
130: luminance sensor
131: heater
Claims (12)
1. a heating device, it has:
Heating cabinet, it comprises the bottom surface of mounting heating object;
Heater, it heats the described heating object in described heating cabinet;
Light-emitting device, it sends the light of at least infrared band in described heating cabinet;
Infrared ray sensor, it detects the reverberation from described bottom surface and obtains the information of described heating object; And
Control device, it at least controls described heater and described light-emitting device,
The testing result that described control device detects described infrared ray sensor in described light-emitting device is lighted and the testing result that described infrared ray sensor detects after described light-emitting device extinguishes compare, and obtain the shape and allocation position that comprise in the described information of described heating object.
2. heating device according to claim 1, wherein,
Described information also comprises the height of described heating object, kind, rate of rise in temperature or temperature rising history.
3. heating device according to claim 1, wherein,
Described control device performs following control:
After obtaining the described information of described heating object, described light-emitting device is extinguished having lighted described light-emitting device,
Afterwards, make described heater work, obtain the temperature information of the described heating object of the heating based on described heater,
The stopping of described heater is controlled according to the described information of described heating object and described temperature information.
4. heating device according to claim 1, wherein,
Described infrared ray sensor drives multiple infrared-ray detecting element, or drives infrared-ray detecting element, detects the reverberation of the described bottom surface from described heating cabinet,
Described control device controls described light-emitting device, makes the luminescence of described light-emitting device continue to proceed to till described infrared ray sensor at least detects the distribution of the reverberation of the whole described bottom surface from described heating cabinet.
5. heating device according to claim 1, wherein,
Described bottom surface is the rotating disk making described heating object rotate in described heating cabinet,
Described infrared ray sensor drives multiple infrared-ray detecting element, or drives infrared-ray detecting element, detects the distribution of the reverberation of the radial direction on described rotating disk,
Described control device controls the rotation of described rotating disk, and control described light-emitting device, make the luminescence of described light-emitting device continue to proceed at least described turntable rotation one week thus till described infrared ray sensor detects the distribution from the reverberation on described rotating disk.
6. heating device according to claim 1, wherein,
This heating device also has the sliding driving device described infrared ray sensor being carried out to slip driving,
By carrying out the described information driving and obtain the solid of described heating object of sliding to described infrared ray sensor.
7. heating device according to claim 1, wherein,
In the described information of the described heating object obtained according to the distribution of described reverberation based on described infrared ray sensor, when obtaining the temperature information of described heating object, the detection range of described infrared ray sensor is made to be only the region of described heating object.
8. heating device according to claim 1, wherein,
Described control device judges the kind of described heating object according to the described information that described infrared ray sensor obtains, and changes the control method of described heater according to the described kind of described heating object.
9. heating device according to claim 1, wherein,
Described control device make described light-emitting device extinguish after, even if extinguish time described infrared ray sensor the unclosed situation of detection under, also start the work of described heater.
10. heating device according to claim 1, wherein,
Described control device makes described light-emitting device luminous and detected by described infrared ray sensor fundamental reflection Temperature Distribution under having prestored the state that there are not any article in described heating cabinet,
To be received into by described heating object in described heating cabinet and the testing result making described light-emitting device luminous and detected by described infrared ray sensor and described fundamental reflection Temperature Distribution compare, obtain the described information of described heating object.
11. heating devices according to claim 1, wherein,
Described control device is after heating terminates, preserve the described information of described heating object, and when heating at every turn, compare with the described information of preserved described heating object, judge described heating object, when being judged to be with described heating object identical type, control heating according to the described information of described heating object.
12. heating devices according to claim 1, wherein,
Described light-emitting device is also used as the heater heated described heating object.
Applications Claiming Priority (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010060630 | 2010-03-17 | ||
| JP2010-060632 | 2010-03-17 | ||
| JP2010-060630 | 2010-03-17 | ||
| JP2010-060629 | 2010-03-17 | ||
| JP2010060634 | 2010-03-17 | ||
| JP2010-060631 | 2010-03-17 | ||
| JP2010-060633 | 2010-03-17 | ||
| JP2010060629 | 2010-03-17 | ||
| JP2010060633 | 2010-03-17 | ||
| JP2010-060634 | 2010-03-17 | ||
| JP2010060632 | 2010-03-17 | ||
| JP2010060631 | 2010-03-17 | ||
| PCT/JP2011/001453 WO2011114682A1 (en) | 2010-03-17 | 2011-03-14 | Cooking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102812298A CN102812298A (en) | 2012-12-05 |
| CN102812298B true CN102812298B (en) | 2015-10-21 |
Family
ID=44648796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180013908.0A Expired - Fee Related CN102812298B (en) | 2010-03-17 | 2011-03-14 | Heating device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2011114682A1 (en) |
| CN (1) | CN102812298B (en) |
| WO (1) | WO2011114682A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI821917B (en) * | 2021-05-26 | 2023-11-11 | 日商日立環球生活方案股份有限公司 | Heating conditioner and heating conditioning method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6176919B2 (en) * | 2012-12-04 | 2017-08-09 | シャープ株式会社 | Cooker |
| JP6051067B2 (en) * | 2013-02-06 | 2016-12-21 | シャープ株式会社 | Cooker |
| JP6264609B2 (en) * | 2014-03-18 | 2018-01-24 | パナソニックＩｐマネジメント株式会社 | High frequency heating device |
| WO2016096442A1 (en) * | 2014-12-17 | 2016-06-23 | Koninklijke Philips N.V. | A method and apparatus for determinging size information of food ingredients |
| CN104791868B (en) * | 2015-03-23 | 2018-06-05 | 广东美的厨房电器制造有限公司 | Plate for defrosting and micro-wave oven |
| CA2989426C (en) * | 2015-06-16 | 2022-04-12 | De Luca Oven Technologies, Llc | A high-wattage power appliance system |
| CN108700303B (en) * | 2016-03-08 | 2020-06-09 | 松下知识产权经营株式会社 | Heating cooker |
| JPWO2017170318A1 (en) * | 2016-03-29 | 2019-02-14 | パナソニックＩｐマネジメント株式会社 | Cooker |
| JP6657496B2 (en) * | 2016-04-18 | 2020-03-04 | 東芝ホームテクノ株式会社 | Cooking device |
| CN106979540A (en) * | 2017-04-23 | 2017-07-25 | 卫祥 | Intelligent microwave oven |
| CN115402168B (en) * | 2017-11-27 | 2024-07-09 | 提爱思科技股份有限公司 | Seat for vehicle |
| JP7108831B2 (en) * | 2018-04-27 | 2022-07-29 | パナソニックＩｐマネジメント株式会社 | heating cooker |
| CN108693900B (en) * | 2018-05-21 | 2020-11-03 | 广东美的厨房电器制造有限公司 | Oven and temperature control method and device thereof |
| CN109905933A (en) * | 2019-03-08 | 2019-06-18 | 林霖 | Intelligent reminding micro-wave oven |
| CN110146195B (en) * | 2019-05-30 | 2021-03-16 | 广东美的厨房电器制造有限公司 | Temperature deviation determination method and device, cooking appliance and readable storage medium |
| WO2022075132A1 (en) * | 2020-10-05 | 2022-04-14 | シャープ株式会社 | Cooker |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN102812298A (en) | 2012-12-05 |
| WO2011114682A1 (en) | 2011-09-22 |
| JPWO2011114682A1 (en) | 2013-06-27 |
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