JP2003254541A - Cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem in a conventional cooker wherein the input operation with an operating key, a knob, or the like is troublesome, but if the troublesome operation is neglected, the result of cooking is often unsatisfactory. <P>SOLUTION: A heater heating container detecting means detects the existance or nonexistance of a heater heating container placed on a shelf, and the placing shelf if it is placed thereon. A heating condition control means sets heater heating conditions of a heater heating source to the heater heating conditions determined for every detected shelf according to information on the placing shelf of the heater heating container detected by the heater heating container detecting means, and starts cooking under the set heating conditions by pressing a cooking start key on a control panel. The heating condition control means changes heating time from the change rate of temperature in relation to time and the initial temperature in a heating chamber detected by a temperature sensor. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cooker such as a microwave oven and a microwave oven, and more particularly to a heating container detector for detecting the position of a heating container arranged in a heating chamber.

[0002]

2. Description of the Related Art FIG. 19 is a perspective view showing an outline of the appearance of a conventional heating cooker. In FIG. 19, 1 is a main body, 2 is a door, 3 is a handle provided on the door, and 4 is an operation panel. 4a
Is a display provided on the operation panel 4, 4b is various operation keys including a menu key, a manual cooking key and a start key, and 4c is a setting knob for setting a cooking time, a temperature, a weight of cooking material, and the like. In addition, although not shown, a microcomputer included in the control circuit is provided, and this microcomputer includes a CPU, a memory for storing data, a calculation result, and the like, and an input / output circuit.

When performing oven cooking with the conventional heating cooker having such a configuration, a saucer on which cooking ingredients are placed is placed on a shelf in the heating cabinet. Then, the display unit 4 of the operation panel 4
The operation key 4b and the knob 4c are manually operated while looking at a, and the heating source, the heating time, the heating temperature, etc. are input according to the type of cooking and the position of the arranged heating container. The information input on the operation panel 4 is transmitted to the CPU of the control circuit, and various operations of heating and cooking are controlled based on a program stored in advance to cook the cooking material. There is also a related description (for example, Patent Document 1).

[0004]

[Patent Document 1] JP-A-63-153329 (second
(Page, page 3, FIGS. 1 to 4)

[0005]

As described above, the conventional heating cooker cooks the heating source and the heating time or the heating temperature according to the type of cooking and the number of shelves of the trays arranged in advance, prior to cooking. It was necessary to select each time according to the conditions and input manually. Therefore, it is necessary to operate the operation keys 4b, the knobs 4c, etc. while viewing the text, and the input operation is troublesome and extremely troublesome. If you do not do the troublesome operation, the malfunction will appear and cooking of the corner will fail,
As a result, there was a problem that the customer might buy the product unfavorably.

The present invention has been made in order to solve such problems of the conventional heating cooker, and detects the position of the heating container arranged on the shelf in the heating chamber, and the simple operation is possible. It is configured to obtain a heating cooker capable of automatic cooking. Another object of the present invention is to realize a heating cooker capable of collectively inputting a plurality of related cooking with a single key, so-called "one-key operation", and improving cooking performance.

[0007]

According to the present invention, a heater heating source for cooking a heater, a plurality of shelves on which a heater heating container is placed, and an internal temperature in a heating chamber are detected. A heating cooker equipped with a temperature sensor, wherein the heater heating container detection means detects the presence or absence of a heater heating container on the shelf and, if there is, a mounting shelf, and controls the heating conditions. The means, based on the detection information of the mounting rack of the heater heating container of the heater heating container detection means, sets the heater heating condition of the heater heating source to the heater heating condition determined for each detection rack. The cooking temperature is set and the cooking is started under the set heating condition by pressing the cooking start key on the operation panel, and the heating condition control means heats from the initial chamber temperature detected by the temperature sensor and the rate of change of temperature with time. It is a heating cooker that changes time.

The present invention further comprises a high-frequency heating source for high-frequency cooking and a mounting table on which the high-frequency heating container is mounted, and the high-frequency heating container detection means determines whether or not the high-frequency heating container is mounted on the mounting table. If there is, the weight is detected, and the heating condition control means sets the high frequency heating condition of the high frequency heating source based on the detection information of the weight of the high frequency heating container of the high frequency heating container detection means, and sets the cooking start key on the operation panel. It is a heating cooker that starts cooking under set heating conditions by pressing the-button.

[0009]

In the case of heater heating, the heating condition control means determines the heater heating condition of the heater heating source based on the detection information of the mounting rack of the heater heating container of the heater heating container detection means. The heater heating conditions set for each detection shelf are set, and cooking is started under the set heating conditions by pressing the cooking start key on the operation panel. The heating time is changed based on the temperature inside the chamber and the rate of change of temperature with time.

Further, in the case of high frequency heating, the heating condition control means sets the high frequency heating condition of the high frequency heating source based on the detection information of the weight of the high frequency heating container of the high frequency heating container detecting means, and the cooking star of the operation panel. Cooking is started under the set heating conditions by pressing the key, but the heating condition control means
The heating time is changed based on the initial temperature inside the chamber detected by the temperature sensor and the rate of change of temperature with respect to time.

[0011]

EXAMPLES Example 1. 1 is a perspective view showing the configuration of a heating chamber according to a first embodiment of the present invention, FIG. 2 is a side view of the heater heating container detector of FIG. 1, FIG. 3 is a front view of the heater heating container detector, and FIG. FIG. 1 to 4, 5 is a heating cabinet of a heating cooker, 6 is an operating portion provided with an operation panel 4, 7 and 8 are heater heating vessels and cooking materials placed on the heater heating vessels, both of which are indicated by a chain line. Has been done. Heating cabinet 5
Is made of a non-magnetic material such as SUS304 stainless steel, and the heater heating container 7 has a quadrangular shape and is made of a magnetic material.

The operation unit 6 is composed of a printed wiring board on which a control circuit including the operation panel 4 and the microcomputer 36 is mounted, and a magnetron for oscillating a high frequency is also provided on the back side (not shown). The high frequency oscillated by the magnetron is guided to the waveguide and is radiated into the interior from the power supply port 5c of the heating cabinet 5. Also, the heating cabinet 5
An upper heater 28 and a lower heater 29 are provided on the upper surface and the lower surface of the.

Reference numerals 5a and 5b denote right and left wall portions of the heating chamber 5, and reference numerals 10, 11, 12 denote upper, middle, and lower shelves horizontally provided on the left and right wall portions 5a, 5b. . Shelf 10,
Here, 11 and 12 are symmetrically made left and right so that the shelves have the same height by projecting the walls 5a and 5b to the inside by press drawing. In this case, the SU containing the austenite in the heating chamber 5
When drawing using a non-magnetic material such as S304,
With work hardening (strain hardening), austenite transforms into martensite and is magnetized. Therefore, measures are taken to prevent the magnetization of the wall portions 5a and 5b by restricting the depth of drawing and suppressing an increase in magnetic permeability.

Movable plates 13 and 14 are provided on the wall 5 of the heating chamber 5.
They are provided side by side in the vertical direction on the outside of b. Reference numeral 15 is a magnet for the middle shelf fixed to the movable plate 13, and 16 is the movable plate 1.
Magnets for lower shelves fixed to No. 4, 37 and 38 are movable plates 1
Magnets for upper shelves fixed to 3, 14 and 17 are support plates,
Reference numeral 18 is a hinge that rotatably supports the movable plates 13 and 14.

The support plate 17 is fixed to the upper part of the outer side surface of the wall 5b, and the movable plates 13 and 14 are swingably supported by the hinge 18 as a fulcrum as shown by an arrow A and hang down. 1
Reference numerals 9 and 20 denote microswitches fixed to a box or the like. The actuators of the microswitches 19 and 20 face the lower ends of the movable plates 13 and 14, respectively. The movable plates 13 and 14, the magnets 15, 16, 37 and 38, and the microswitches 19 and 20 constitute a heater heating vessel detector (means) 21 for detecting the position of the heater heating vessel 7 inside the heater heating chamber 5. It

Reference numeral 31 is a high-frequency heating container, 32 is a mounting table, and 3
3 is a motor shaft, and 34 is a motor. The mounting table 32 is detachably attached to the motor shaft 33, and the high-frequency heating container 31 is mounted on the mounting table 32. High frequency heating container 31
Is circular and a non-magnetic material such as glass is used. 35
Is a weight sensor, and 36 is the above-mentioned microcomputer. The weight sensor 35 detects the weight of the cooking material 8 on the high-frequency heating container 31, and outputs a detection signal to the microcomputer 36. The microcomputer 36 controls the heating condition applied to the cooking material 8 on the high-frequency heating container 31 based on the detection signal of the weight sensor 35, and determines whether the high-frequency heating container 31 is on the mounting table 32 or not.

The embodiment of the present invention having the above-described structure will be described separately for two operations, that is, the detection operation of the heater heating container detector 21 and the cooking operation by high frequency heating and heater heating. When the heater heating container 7 is placed on the middle shelf 11, the movable plate 13 is attracted toward the heater heating container 7 by the attraction force of the magnet 15 for the middle shelf. When the heater heating container 7 is placed on the lower shelf 12, the movable plate 14 is attracted toward the heater heating container 7 by the attractive force of the magnet 16 for the lower shelf. By these operations, the microswitches 19 and 20 are turned on, and two positions of the middle shelf and the lower shelf of the heater heating container 7 are detected.

When the heater heating container 7 is placed on the upper shelf 10, the two movable plates 13 and 14 are attracted to the heater heating container 7 by the attraction force of the two magnets 37 and 38 for the upper shelf.
The magnets 37 and 38 are pressed against the wall of the heating chamber, and the heater heating container 7 is also attracted to the magnets 37 and 38 and pressed against the wall of the heating chamber. Therefore, the two micro switches 19
And 20 are simultaneously turned on, and the position of the upper shelf of the heater heating container 7 is detected.

Next, the cooking operation by high frequency heating and heater heating will be described with reference to the flow chart of FIG. First, it is checked whether the micro switch 19 on the upper middle shelf is ON (S1). When step S1 is YES, it is checked whether the microswitches 20 on the upper and lower shelves are ON (S2).
If step S2 is also YES, it is determined that the heater heating container 7 is placed only on the upper shelf, and the upper shelf heating is set (S3). When step S2 is NO, it is determined that the heater heating container 7 is placed only on the middle shelf, and the middle shelf heating is set (S4).

When step S1 is NO, it is checked whether the microswitches 20 on the upper and lower shelves are ON (S5).
When step S5 is YES, it is determined that the heater heating container 7 is placed only on the lower shelf, and the lower shelf heating is set (S6). When the shelf on which the heater heating container 7 is placed is determined, the weight sensor 35 next determines whether or not the high-frequency heating container 31 is placed on the mounting table 32 (S7). Also,
Even when the step S5 is NO, the weight sensor 35 is used for the mounting table 3
It is determined whether or not there is the high frequency heating container 31 on the upper side of 2 (S8).

When the step S7 is YES and the cooking start key is pressed (S9), the heater heating is started under the heating condition corresponding to each shelf (S10). The heating of the heater is started and the elapse of the set time is checked (S11). If the answer in step S11 is YES, the heating of the heater is ended (S12). If NO in step S7 and the cooking start key is pressed (S13), it is determined that both the heater heating container 7 and the high-frequency heating container 31 are inside the heating chamber 5 and that the container is misused (S14). In step S14, it is determined that the user has misused the product, and a warning, such as a buzzer and a display, warns the user of the misuse (step S15).

When the step S8 is YES and the cooking start key 4b is pressed (S16), high frequency heating is set (S17). Next, the weight sensor 35 measures the weight of the cooking material 8 on the high-frequency heating container (S18), and the heating time corresponding to the weight of the cooking material 8 is set (S19). Step S
After setting the heating time at 19, high frequency heating is started (S1
0). The high frequency heating is started and the elapse of the set time is checked (S11), and if the result of step S11 is YES, the high frequency heating is ended (S12).

If NO in step S8 and the cooking start key 4b is pressed (S20), it is judged that there is neither the heater heating container 7 nor the high-frequency heating container 31 inside the heating chamber 5 and it is misused (S21). . In step S21, it is determined that the user has misused the product, and a buzzer, a display, etc. warn the user of the misuse (S22).

FIGS. 6A and 6B are explanatory views of a modified example of the heater heating container detector 21 in the first embodiment.
In the figure, reference numeral 41 denotes a rectangular through hole which is provided in the movable plate 13 and constitutes the hinge 18, and is for hooking the movable plate 13 on the support plate 17. In this modification, for example, a rectangular box-shaped magnetic shield 42, which is made of a magnetic material and has no lid, is provided so as to surround the prismatic magnets 15 and 37. The magnetic shield 42 and the movable plate 13 are fixed with an adhesive or the like. According to the modified example of FIG. 6, the magnetic paths of the magnets 15 and 37 are formed in the magnetic shield 42, the leakage magnetic flux disappears, and the magnetic attraction force can be increased in the outer wall direction of the heating chamber 5.

If the magnetic force of the magnets 15, 16, 37, 38 composing the heater heating container detector 21 is too strong, the magnetic attraction force makes it difficult to move the heating chamber 5 of the heater heating container 7 into and out of the heating chamber 5, which causes trouble. I may come. Therefore, it is necessary to select the magnetic force of the magnets 15 and 37, the distance from the heater heating container 7, the material, the weight, etc. so that the presence or absence and the position of the heater heating container 7 can be detected and the taking-in / out operation can be performed smoothly. is there.

As a result of the experiments conducted by the inventors, it was possible to realize the heater heating container detector 21 of Example 1 which is effective with the following specifications. As a prerequisite, the micro switch 19 is generated by the attraction force of the magnets 15 and 37 via the movable plate 13.
Under the condition that the above was operated, the size of each part was set so that the distance between the surface of the magnet 37 for the upper shelf and the outer wall of the heating chamber 5 was about 1.0 mm. Also, the magnet 15 for the middle shelf is 1.7
mm, and the magnet 16 for the lower shelf has dimensions of each part set to be 2.2 mm.

[0027] 1. Magnet specifications   Material ... (Ferrite anisotropic sintered magnet: B36)   Residual magnetic flux density Br ... 3800-4200 [G]   Coercive force bHc ... 2700-3300 [Oe]   Coercive force iHc ... 2700 to 3300 [Oe]   Maximum energy product (BH) max ... 3.6 to 4.2 [MGOe]   Temperature coefficient ΔBr / Br / ΔT ...- 0.18 [% / ° C]   Temperature coefficient ΔiHc / iHc / ΔT ... + 0.30 [% / ° C]   Curie temperature Tc ... 460 [° C]   External dimensions: 25 x 19 x 5 (mm)

[0028] 2. Movable plate specifications (see also the dimensions in Figure 6)   Dimension from hinge 18 to tip of movable plate 210mm   Dimension from hinge 18 to center of upper shelf magnet 37 ... 58mm   Dimension from hinge 18 to center of middle shelf magnet 15 ... 94mm   Dimension from hinge 18 to center of lower shelf magnet 16… 130mm

Regarding the mechanical heater heating container detector 21 using the movable plate described above, in FIG.
2 and 14 are shown, and the case where the shelves have three stages of 10 to 12 is shown. Here, if the number of movable plates and the number of shelves are N and n, respectively, there is a relationship as shown in the following expression (a). n = 2 ^N (a) A layout of the magnets when N = 1, 2, 3, 4 is shown in FIG.
(A), (b), (c), (d). For example, in the diagram (c), it is possible to detect the positions of the heater heating vessels 7 having a maximum of eight stages with three movable plates.

Embodiment 2 FIG. 8 is a flow chart showing the cooking operation by high frequency heating and heater heating of Embodiment 2 of the present invention. Hereinafter, description will be made with reference to the flowchart of FIG.

First, it is determined whether or not the cooking start key 4b has been pressed (S23). When step S23 is YES, it is checked whether the micro switch 19 on the upper middle shelf is ON. (S24). When step S24 is YES, it is checked whether the microswitches 20 on the upper and lower shelves are ON (S25). If YES at step S25, it is determined that the heater heating container 7 is placed only on the upper shelf, and heating for the upper shelf is set (S26). Also, if step S25 is N
When it is O, it is determined that the heater heating container 7 is placed only on the middle shelf 11, and the middle shelf heating is set (S27).

If step S24 is NO, it is checked whether the microswitches 20 on the upper and lower shelves are ON (S2).
8). When step S28 is YES, it is determined that the heater heating container 7 is placed only on the lower shelf 12, and the lower shelf heating is set (S29). When any of the shelves on which the heater heating container 7 is placed is determined, the heater heating is started (S30). Next, the weight sensor 35 determines whether or not there is the high-frequency heating container 31 on the mounting table 32 (S3).
1). If YES in step S31, the progress of the set time for heating the heater is checked (S32), and step S32 is performed.
If YES, the heater heating is finished (S33).

When the step S31 is NO, the heater heating container 7 and the high frequency heating container 31 are provided inside the heating chamber 5.
Both are present, and it is determined that they are misused (S34). In step S34, it is determined that the heater has been misused and the heater heating is stopped.
A buzzer, display, etc. warn of misuse (S35). When step S28 is NO, high frequency heating is started (S3).
6). Next, the weight sensor 35 determines whether or not the high-frequency heating container 31 is present on the mounting table 32 (S37). When step S37 is YES, the weight of the cooking material 8 is measured (S38), and the heating amount according to the weight of the cooking material 8 is set (S39). After setting the heating amount in step S39, the elapse of the set time of the high frequency heating is checked (S32), and if the step S32 is YES, the high frequency heating is ended (S3).
3).

When the step S37 is NO, the heater heating container 7 and the high frequency heating container 31 are provided inside the heating chamber 5.
There is no both, and it is judged that it is misused (S40) Step S
At 40, the high frequency heating is stopped, the high frequency heating is stopped, and the buzzer, display, etc. warn of the misuse (S41).

Third Embodiment FIG. 9 is a front view of a heater heating container detector 21 according to a third embodiment of the present invention, FIG. 10 is a configuration explanatory view, and FIG. 11 is a flow chart showing a cooking operation by high frequency heating and heater heating.

In the figure, 43, 44 and 45 are movable plates,
Reference numerals 46, 47 and 48 are microswitches fixed to a box or the like. This will be described below with reference to the flowchart of FIG. First, it is determined whether the cooking start key 4b has been pressed (S42). If YES in step S42, it is checked whether or not the micro switch 46 for the upper shelf is ON (S
43). If YES in step S43, it is checked whether the micro switch 47 for the middle shelf is OFF (S4).
4). When step S44 is YES, it is checked whether the micro switch 48 on the lower shelf is also OFF (S45). When step S45 is YES, it is determined that the heater heating container 7 is placed only on the upper shelf 10, and the upper shelf heating is set (S46).

If NO in steps S44 and S45, it is judged that there is a plurality of heater heating vessels 7 inside the heating chamber 5 and the heater is misused (S47). In step S47, it is determined that the user has misused the product, and a buzzer and a display warn the user of the misuse (S48). If NO in step S43, it is checked whether the micro switch 47 for the middle shelf is ON (S49). If YES in S49, check whether the micro switch 48 for the lower shelf is OFF (S5).
0). When step S50 is YES, it is determined that the heater heating container 7 is placed only on the middle shelf 11, and the middle shelf heating is set (S51).

When step S50 is NO, the heating chamber 5
Since there are a plurality of heater heating containers 7 inside, it is determined that the container is misused (S47). In step S47, it is determined that the user has misused the product, and a buzzer or a display warns the user of the misuse. If NO in step S49, the micro switch 48 on the lower shelf is used.
It is checked whether is ON (S52). Step S52 is Y
If ES, lower shelf heating is set (S53). When step S52 is NO, high frequency heating is set (S5).
4). When each heating condition is set, heating is started (S5
5). After heating is started in step S55, the elapse of the set time is checked (S56). Step S56 is YE
When S, heating is finished (S57).

FIG. 12 is a front view of a modification of the heater heating container detector 21 of the third embodiment, and FIG. 13 is a side view of a second modification of the heater heating container detector 21 of the third embodiment. 12
In the heater heating container detector 21 of No. 3, magnets 37, 15, and 16 having different sizes and gradually decreasing are used. Then, the micro switch 46 based on the difference in the distances L1, L2, L3 from the hinge 18 of each magnet 37, 15, 16
It is configured to compensate for the pressing force applied to 47, 48 and open and close the contacts with a substantially uniform driving force. In this case, the number of the same magnetic body can be changed, or different magnetic body materials (for example, a rare earth cobalt magnet having a strong holding force for a normal ferrite magnet for the magnet 37) can be selected and used.

Further, in FIG. 13 showing the second modification, an overhanging portion 5c is formed on the side wall 5a of the shelf 10 on the right side.
The heater heating container 7 is placed on the shelf 10 with a left offset by the overhanging portion 5c. As a result, the distance L between the magnet 37 and the heater heating container 7 is shortened, and the pressing force of the movable plate 43 that detects the upper shelf is compensated. In addition, magnets 37 and 15
The mounting surface of can also be projected. As described above, according to each modification of the third embodiment, the pressing force of the microswitch 46 of each magnetic detector is substantially uniform, and the opening / closing operation of the contact of the switch is accurately performed.

Fourth Embodiment FIG. 14 shows a heater heating container detector 21 according to a fourth embodiment of the present invention.
FIG. 15 is a flow chart showing a cooking operation by high frequency heating and heater heating. Hereinafter, description will be made with reference to the flowchart of FIG. First, the cooking start key 4b
It is determined whether or not has been pressed (S58). Step S5
When 8 is YES, it is checked whether the micro switch 47 for the middle shelf is ON (S59). Step S59 is YE
If S, it is checked whether the micro switch 48 for the lower shelf is OFF (S60). When step S60 is YES, the weight sensor 35 checks whether the high-frequency heating container 31 is on the mounting table 32 (S61). Step S61
When is YES, the middle shelf heating is set (S62).

When the step S60 is NO, the heater heating container 7 is placed inside the heating cabinet 5 on the lower shelf 12 and the middle shelf 11, so it is judged that the heater is misused (S63). Further, when the step S61 is NO, the heater heating container 7 is the middle shelf 1
1. Since the high-frequency heating container 31 is mounted on the mounting table 32, it is determined to be misused (S63). In step S63, it is determined that the user has misused the product, and a buzzer and a display warn the user of the misuse (S64). When step S59 is NO, it is checked whether the micro switch 48 on the lower shelf is ON (S65).
When step S65 is YES, the weight sensor 35 checks whether the high frequency heating container 31 is on the mounting table 32 (S66). When step S66 is YES, lower shelf heating is set. When step S66 is NO, the heating compartment 5
Since the heater heating container 7 is mounted on the lower shelf 12 and the high-frequency heating container 31 is mounted on the mounting table 32 inside the container, it is determined to be misused (S63).

When step S65 is NO, the weight sensor 35 checks whether or not the high-frequency heating container 31 is on the mounting table 32 (S68). When step S68 is YES, high frequency heating is set (S69). When step S69 is NO, upper shelf heating is set (S70). When each heating condition is set, heating is started (S71). After the heating is started in step S71, the elapse of the set time is checked (S72). When step S72 is YES, heating is completed (S73).

The following table exemplifies the correspondence between each heating condition and the cooking menu for the three steps of upper, middle, and lower shelves in each of the above-described embodiments.

[0045]

[Table 1]

FIG. 16 is a sectional view showing a modification of the heater heating container detector in each of the above-mentioned embodiments. In FIG. 16, reference numerals 23 and 24 are light projectors such as light emitting diodes,
Reference numerals 25 and 26 are photodetectors made of phototransistors, and 27 is a light passage hole penetrating the heating chamber 5.

In the heater heating container detector having such a structure, when the heater heating container 7 is placed on the middle shelf 11, the passage hole 27 is closed and the projection light from the projector 23 is blocked. Therefore, the heater heating container 7 placed on the middle shelf 11 is detected by the change in the light received by the light receiver 25. Similarly, the heater heating container 7 placed on the lower shelf 12 is detected by the change in the light received by the light receiver 26.

Embodiment 5 FIG. 17 is an explanatory view of the structure of Embodiment 5 of the present invention, and FIG. 18 is a characteristic diagram of heating temperature t. The fifth embodiment is intended to improve the quality of cooking by changing the heating time T corresponding to the heating amount "finely" under the heating conditions of the heater heating. In the figure, 51 is an exhaust port, 52 is an exhaust duct, and 53.
Is a temperature sensor for controlling the internal temperature of the heating chamber 5.

In the fifth embodiment having such a structure, the cooking material 8 is placed on the heater heating container 7 and placed on any of the upper, middle and lower shelves. When the cooking start key 4b is pressed to start heating the heater, the internal temperature t of the heating chamber 5 rises. The temperature t is detected by the temperature sensor 53 and output to the microcomputer 36. The detection signal of the temperature sensor 53 is the cooking material 8
, The temperature and power supply voltage, and the initial internal temperature t0. Therefore, the microcomputer 36 uses the detection signal of the temperature sensor 53 to change the temperature with time, that is, the temperature gradient ta.
Calculate nδ = Δt / ΔT. Then, the microcomputer 36 sets the optimum heating amount for the cooking menu based on the initial internal temperature t0 and the temperature gradient tan δ.

[0050]

The heating cooker according to the present invention detects a heater heating source for heating a heater, a plurality of shelves on which a heater heating container is placed, and an internal temperature in the heating chamber. A temperature sensor is provided, and the heater heating container detection means detects the presence or absence of the heater heating container on the shelf and, if there is, the mounting shelf, and the heating condition control means heats the heater. The heater heating condition of the heater heating source is set to the heater heating condition determined for each detection shelf based on the detection information of the heating rack of the heater heating container of the container detecting means, and cooking of the operation panel is performed. Cooking is started under the set heating conditions by pressing the start key, and the heating condition control means changes the heating time from the initial chamber temperature detected by the temperature sensor and the rate of change of temperature with respect to time, so that cooking is performed. You can improve the performance of the.

Further, the heating cooker of the present invention comprises a high-frequency heating source for high-frequency cooking and a mounting table on which the high-frequency heating container is mounted, and the high-frequency heating container detecting means mounts the high-frequency heating container on the mounting table. The presence or absence of the device and its weight are detected, and the heating condition control means sets the high frequency heating condition of the high frequency heating source based on the detection information of the weight of the high frequency heating container of the high frequency heating container detection means, and sets the high frequency heating condition of the operation panel. Since the cooking is started under the set heating condition by pressing the cooking start key, the quality of the cooking can be improved even in the high frequency cooking.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a heating chamber according to a first embodiment of the present invention.

2 is a side view of the heater heating container detector of FIG. 1. FIG.

3 is a front view of the heater heating container detector of FIG. 1. FIG.

FIG. 4 is a configuration explanatory diagram of the first embodiment of the present invention.

FIG. 5 is a flowchart of a cooking operation according to the first embodiment of the present invention.

FIG. 6 is an explanatory diagram of a modified example of the heater heating container detector according to the first embodiment.

FIG. 7 is an explanatory diagram of the number of movable plates of the heater heating container detector and the arrangement positions of magnets corresponding to the shelves in the first embodiment of the present invention.

FIG. 8 is a flowchart of cooking operation by high frequency heating and heater heating according to the second embodiment of the present invention.

FIG. 9 is a front view of a heater heating container detector according to a third embodiment of the present invention.

FIG. 10 is a structural explanatory diagram of Embodiment 3 of the present invention.

FIG. 11 is a flowchart of a cooking operation by high-frequency heating and heater heating according to the third embodiment of the present invention.

FIG. 12 is a front view of a modified example of the third embodiment of the present invention.

FIG. 13 is a side view of a second modified example of the third embodiment of the present invention.

FIG. 14 is a front view of a heater heating container detector according to a fourth embodiment of the present invention.

FIG. 15 is a flowchart of cooking operation by high frequency heating and heater heating according to a fourth embodiment of the present invention.

FIG. 16 is a cross-sectional view of a modified example of the heater heating container detector in each embodiment of the present invention.

FIG. 17 is a structural explanatory diagram of Embodiment 5 of the present invention.

FIG. 18 is a characteristic diagram of heating temperature in Example 5 of the present invention.

FIG. 19 is a perspective view showing an appearance of a conventional heating cooker.

[Explanation of symbols]

4 operation panel, 4b cooking start key, 5 heating cabinet, 7 heater heating container, 10, 11, 12 mounting shelf,
21 heater heating container detection means, 28, 29 heater heating source, 35 high frequency heating control means, 36 heating condition control means, 53 temperature sensor.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tsutomu Arai             1728 Omaeda, Hanazono-cho, Osato-gun, Saitama 1728               Within Mitsubishi Electric Home Equipment Co., Ltd. (72) Inventor Katsuyoshi Yamada             1728 Omaeda, Hanazono-cho, Osato-gun, Saitama 1728               Within Mitsubishi Electric Home Equipment Co., Ltd. (72) Inventor Takahiro Kanai             1728 Omaeda, Hanazono-cho, Osato-gun, Saitama 1728               Within Mitsubishi Electric Home Equipment Co., Ltd. (72) Inventor Takeshi Saito             1728 Omaeda, Hanazono-cho, Osato-gun, Saitama 1728               Within Mitsubishi Electric Home Equipment Co., Ltd. (72) Inventor Yoshinori Wakatsuki             1728 Omaeda, Hanazono-cho, Osato-gun, Saitama 1728               Within Mitsubishi Electric Home Equipment Co., Ltd. (72) Inventor Koji Hishiyama             1728 Omaeda, Hanazono-cho, Osato-gun, Saitama 1728               Within Mitsubishi Electric Home Equipment Co., Ltd. F term (reference) 3L086 AA02 AA04 BA08 BB13 CA04                       CB02 CB05 CC08 DA24                 3L087 AA01 BB05 BB20 BC06 CC01                       DA24 DA28

Claims (2)

[Claims] 1. A heating cooker comprising a heater heating source for cooking a heater, a plurality of shelves for mounting a heater heating container, and a temperature sensor for detecting an internal temperature in a heating cabinet. The heater heating container detection means detects the presence or absence of a heater heating container placed on the shelf and, if there is a heater heating container, detects the placement shelf, and the heating condition control means causes the heater heating container to be detected. The heater is detected by the heating container detecting means, and the heater is detected based on the detection information of the mounting shelf of the heating container.
Set the heater heating condition of the heater heating source to the heater heating condition specified for each detection shelf and set the cooking start key on the operation panel.
Pressing starts the cooking under the set heating condition, and the heating condition control means changes the heating time from the initial temperature inside the chamber detected by the temperature sensor and the rate of change of temperature with respect to time. Heating cooker. 2. A high-frequency heating source for high-frequency cooking, and a mounting table for mounting the high-frequency heating container, wherein the high-frequency heating container detection means determines whether or not the high-frequency heating container is mounted on the mounting table. Detects the weight, and the heating condition control means sets the high frequency heating condition of the high frequency heating source based on the detection information of the weight of the high frequency heating container of the high frequency heating container detecting means, and the cooking starter of the operation panel.
The heating cooker according to claim 1, wherein cooking is started under the set heating condition by pressing a toki.