JP3667168B2 - Cooked rice container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
[0002]
The present invention relates to a cooked rice warming container used for warming cooked rice.
[Prior art]
[0003]
In the case of heating and heating the inner pot for containing cooked rice with a heating means, a cooked rice warming container that keeps a predetermined temperature by controlling energization to the heating means has been well known in the past. The heat-retaining temperature in the cooked rice heat-retaining container is set to a slightly higher heat-retaining temperature (for example, about 73 ° C.) so that the stored cooked rice is not easily spoiled (see, for example, JP-A-5-7526) ).
[0004]
By the way, when the heat-retaining set temperature is set to a high temperature that is difficult to rot as described above, there has been a problem that the cooked rice becomes hard or turns brown.
[0005]
In view of this, there has been proposed a low temperature heat retention control in which the heat retention set temperature is lowered (for example, about 65 ° C.), but in this case, the cooked rice is less likely to become hard or discolored. However, there is a problem that the temperature of rice when eating is too low
In order to solve the above problems, it has also been proposed to set a meal time in accordance with a general meal time zone and perform reheating control so that the temperature of the rice automatically rises at that time. (For example, refer to JP-A-8-299168).
[Problems to be solved by the invention]
[0006]
However, in the case of the above known example, there arises a problem that it is not possible to cope with a case where the user's actual meal time zone and the set meal time zone are different.
[0007]
This invention is made | formed in view of said point, and it aims at enabling it to perform temperature rising control corresponding to a user's actual meal time slot | zone.
[Means for Solving the Problems]
[0008]
In the invention of claim 1, as means for solving the above-mentioned problem, a container main body for storing an inner pot for storing cooked rice, a lid body of the container main body, a heating means for keeping the inner pot warm and heating, Temperature detecting means for detecting the temperature of the inner pot, timing means for measuring the time of the day, and the heating means so as to keep the inner pot temperature detected by the temperature detecting means at a temperature lower than the normal temperature. In a cooked rice warming container equipped with a low temperature heat insulation control means for controlling energization of the lid, a lid open / close detection means for detecting opening / closing of the lid body, a lid open / close count detected by the lid open / close detection means, and a time are stored. A meal time estimation means for estimating a stored time when the number of times of opening and closing the lid is large as a meal time from the next time, and the inner pan temperature is preset at the meal time estimated by the meal time estimation means Temperature rising The heating means from a predetermined time before the meal time so as to raise the set temperature Temperature rise by And said Temperature rising When the set temperature is reached Temperature rising And a temperature rise control means for stopping the operation.
[0009]
By configuring as described above, the meal time is estimated from the time when the lid is opened and closed frequently, and the inner pot temperature is adjusted to the estimated meal time. Temperature rising The temperature is raised to the set temperature. Therefore, the rice can be put in the “others” state according to the user's actual meal time zone. In addition, the rice can be kept at a low temperature in a state other than the meal time.
[0010]
In the invention of claim 2, as means for solving the above-mentioned problems, a container main body for storing the inner pot for storing cooked rice, a lid body of the container main body, a heating means for keeping the inner pot warm and heating, Temperature detecting means for detecting the temperature of the inner pot, timing means for measuring the time of the day, and the heating means so as to keep the inner pot temperature detected by the temperature detecting means at a temperature lower than the normal temperature. In the cooked rice warming container provided with the low temperature warming control means for controlling the energization of the warming amount detection means for detecting the warming amount of the rice in the inner pot, and the warming amount detected by the warming amount detection means has changed Meal time estimation means for storing the time and estimating the stored time as the meal time, and the inner pan temperature is preset at the meal time estimated by the meal time estimation means Temperature rising The heating means from a predetermined time before the meal time so as to raise the set temperature Temperature rise by And said Temperature rising When the set temperature is reached Temperature rising And a temperature rise control means for stopping the operation.
[0011]
By configuring as described above, the time at which the heat retention amount of the rice is changed is estimated as the meal time, and the inner pot temperature is adjusted according to the estimated meal time. Temperature rising The temperature is raised to the set temperature. Therefore, the rice can be put in the “others” state according to the user's actual meal time zone. In addition, the rice can be kept at a low temperature in a state other than the meal time.
[0012]
In invention of Claim 3, as a means for solving the said subject, the container main body which accommodates the inner pot for containing cooked rice, the cover body of this container main body, the heating means which heat-retains and heats the said inner pot, Temperature detecting means for detecting the temperature of the inner pot, timing means for measuring the time of the day, and the heating means so as to keep the inner pot temperature detected by the temperature detecting means at a temperature lower than the normal temperature. In a cooked rice warming container equipped with a low temperature keeping control means for controlling energization of the meal, the meal time for estimating the meal time as the time when the change in the temperature of the inner pan detected by the temperature detection means exceeds a preset value The inner pot temperature is preset at the meal time estimated by the estimation means and the meal time estimation means. Temperature rising A temperature increase control means for controlling energization to the heating means is provided so as to increase to a set temperature.
[0013]
By configuring as described above, the meal time is estimated from the change in the inner pot temperature, and the inner pot temperature is adjusted according to the estimated meal time. Temperature rising The temperature is raised to the set temperature. Therefore, the rice can be put in the “others” state according to the user's actual meal time zone. In addition, the rice can be kept at a low temperature in a state other than the meal time.
[0014]
As in the invention of claim 4, in the cooked rice heat insulating container according to any one of claims 1, 2, and 3, the estimation of the meal time by the meal time estimating means is performed in three time zones of morning, noon and night. If this is done, the meal time can be estimated more accurately.
DETAILED DESCRIPTION OF THE INVENTION
[0015]
Hereinafter, some preferred embodiments of the present invention will be described with reference to the accompanying drawings.
[0016]
First, with reference to FIG. 1 thru | or FIG. 5, the structure of the cooked rice heat insulation container used in the following embodiment is demonstrated.
[0017]
This cooked rice heat-insulating container is used for both cooking and heat-insulating, and has a double-structured container body 1 configured so that the inner pot 3 can be set therein, and an upper opening of the container body 1. It is comprised by the cover body 2 which covers so that opening and closing is possible.
[0018]
The container body 1 has a bottomed cylindrical outer case 4 made of synthetic resin that forms an outer peripheral surface and a bottom, a bottomed cylindrical protective frame 5 that forms an inner peripheral surface, and an upper end of the outer case 4 It is comprised by the synthetic resin shoulder member 6 which couple | bonds the upper end of the said protective frame 5, and the said inner pot 3 is set so that extraction is possible in the inside.
[0019]
An electric heater 7 for heat insulation is provided on the upper side surface of the inner case 5, and the temperature of the inner pot 3 is detected by contacting the bottom surface of the inner pot 3 at the center of the bottom surface of the inner case 5. A center sensor 8 is provided which acts as temperature detecting means.
[0020]
An annular work coil 9 is disposed at the bottom of the inner case 5 so as to surround the center sensor 8 and to correspond from the bottom surface of the inner pot 3 to the lower curved portion. The work coil 9 acts as magnetism generating means in the high frequency electromagnetic induction heating apparatus and is used as heating means. Reference numeral 10 denotes a coil die that holds the work coil 9, and 11 denotes a ferrite core that shields the magnetism generated by the work coil 9 so as not to affect the devices existing below.
[0021]
The lid 2 includes a synthetic resin upper plate 12 constituting the upper surface, a synthetic resin lower plate 13 constituting the outer peripheral annular portion on the lower surface, and a heat radiating plate 14 covering the opening in the lower plate 13. To form a hollow structure. The lid 2 is rotatably attached to one side of the shoulder member 6 via a hinge mechanism 15, and its open end is engaged with a predetermined position of the lid 2. A lock mechanism 16 that maintains the closed state of the lid 2 is provided.
[0022]
In FIG. 1, reference numeral 17 denotes a steam discharge passage, 18 denotes a pressure adjusting cylinder, 19 denotes a lid heater, 20 denotes an operation panel, and 21 denotes cooling for cooling a power transistor (not shown) for starting the work coil 9. A fan, 22 is a cord reel, 23 is a heat insulating material in the lid 2, and 24 is a control board.
[0023]
As shown in FIG. 2, the operation panel 20 has a rice cooking key 25 that is turned ON during rice cooking, a menu key 26 that selects various rice cooking menus, a cancel key 27 that cancels various operation states, and an ON operation that is performed during reheating. Manual reheating key 28, heat retention selection key 29 for selecting normal heat retention (in other words, high temperature heat retention) and heat retention at a temperature lower than normal heat retention (in other words, low temperature heat retention), ON at the time of reservation Reservation key 30 to be operated, hour key 32, minute key 33, rice cooking indicator lamp 34, heat retention indicator lamp 35, reservation indicator lamp 36, temperature rise indicator lamp which is turned on at the time of reheating and automatic heating and acts as a display means 37 and a liquid crystal display unit 38 are provided.
[0024]
By the way, as shown in FIG. 3, the cooked rice warming container is provided with a lid opening / closing sensor 39 that acts as a lid opening / closing detection means for detecting opening / closing of the lid body 2. As shown in FIG. 4, the lid opening / closing sensor 39 includes a micro switch 40 provided on the shoulder member 6 and the micro switch 40, and an actuator 40 a of the micro switch 40 is formed by a protrusion 41 provided on the lid body 2. As shown in FIG. 5, it may be configured by a reed switch 42 provided on the shoulder member 6 and a magnet 43 provided on the lid 2 side. Further, as the lid opening / closing sensor 39, an optical sensor or the like may be used.
[0025]
As shown in FIG. 3, the control board 24 incorporates a microcomputer unit (hereinafter abbreviated as a microcomputer) 44, a work coil drive circuit 45, and a heat retaining electric heater drive circuit 46. , A work coil 9 for heating the inner pot 3 for cooking, an electric heater 7 for maintaining and heating the inner pot 3, and energizing the lid heater 19, and an operation panel 20 having various keys 25 to 31. And signals from the center sensor 8 and the lid opening / closing sensor 39 are input. Further, the microcomputer 44 outputs signals to the various display lamps 34 to 37 and the liquid crystal display unit 38. Further, the microcomputer 44 has a built-in clock as time measuring means for measuring the time of the day, and the time display is displayed on the liquid crystal display unit 38 in the operation panel 20.
[0026]
First embodiment
FIG. 6 shows a flowchart of automatic temperature rise time change control in the cooked rice heat retaining container according to the first embodiment of the present invention.
[0027]
In this case, the microcomputer 44 keeps the temperature of the inner pot temperature T detected by the center sensor 8 at a heat retention temperature (for example, 60 ° C.) lower than the normal heat retention temperature (for example, 72 ° C.) and the work coil. 9 stores the function as a low temperature heat insulation control means for controlling energization to the lid 9, the lid opening / closing frequency K detected by the lid opening / closing sensor 39, and the time, and stores the time when the stored lid opening / closing frequency K is large from the next time. The function as the meal time estimating means for estimating the meal time, and the inner pot temperature T is preset at the meal time estimated by the meal time estimating means. Temperature rising The work coil 9 starts from a predetermined time before the meal time so as to increase to a set temperature Ts (for example, 110 ° C.). Temperature rise by And said Temperature rising When the set temperature Ts is reached Temperature rising And a function as a temperature rise control means for stopping the operation. In the cooked rice container according to the present embodiment, as shown in the time chart of FIG. 7, it is at 6 o'clock (morning), 11:00 (noon), and 18:00 (evening) which are general meal time zones. The temperature raising control means is activated, and is programmed at the time of shipment so as to maintain the normal heat retention for a predetermined time (for example, 3 hours from the start of temperature rise in the morning and night, and 2 hours from the start of temperature rise in the daytime). In addition, it is programmed at the time of shipment so that the temperature raising control means operates even at 2 o'clock necessary for preventing corruption.
[0028]
Next, with reference to the flowchart shown in FIG. 6 and the time chart shown in FIG. 8, the automatic temperature rising time change control in the cooked rice warming container according to the present embodiment will be described in detail.
[0029]
If it is confirmed in step S1 that the temperature is being maintained, it is determined in step S2 whether or not a signal is input from the lid opening / closing sensor 39 (that is, whether or not the lid body 2 has been opened / closed). If YES, the process proceeds to step S3 to determine whether or not the lid 2 is opened and closed for the first time. If an affirmative determination is made here, the current time N is stored in the microcomputer 44 at the same time as the counting of the one-hour timer is started in step S4, and 1 is added to the opening / closing count K of the lid 2 in step S5. However, if a negative determination is made in step S3, the process directly proceeds to step S5, and 1 is added to the lid opening / closing count K. The above control is repeated until it is determined in step S6 that one hour has elapsed.
[0030]
If an affirmative determination is made in step S6, the one-hour timer count is stopped in step S7, and the current time N is read from the microcomputer 44.
[0031]
In step S8, step S9 and step S10, the current time N is between 2 o'clock and 11 o'clock (i.e., breakfast time zone), between 11 o'clock and 16 o'clock (i.e. lunch time zone), and between 16:00 and 2 o'clock ( That is, it is determined whether or not it is a dinner time zone, and if an affirmative determination is made here, the lid opening / closing frequency K is preset in step S11, step S12, and step S13 (that is, the figure). 7 in the time chart of FIG. 7), the lid opening / closing frequency Ks in the lunch time zone (ie, temperature rise 3 in the time chart of FIG. 7) and dinner time zone (ie, temperature rise 4 in the time chart of FIG. 7). ₁ , Ks ₂ And Ks _Three Are compared with each other, where K> Ks ₁ , K> Ks ₂ And K> Ks _Three If it is determined, the process proceeds to step S14, step S15, and step S16, respectively, and the temperature rise start time is changed to a time that is a predetermined time (for example, one hour) before the current time N (that is, the lid 2 is initially set). Is changed so that the temperature rise is completed at the time when is opened / closed). If a negative determination is made in step S11, step S12, and step S13, the temperature rise start time is not changed, and the count of the 1-hour timer is cleared in step S17, and the process returns to step S1.
[0032]
As described above, in the present embodiment, the time when the lid 2 is opened and closed is estimated as the meal time, and the rice in the inner pot 3 is in an “other” state at which the temperature is increased. The temperature rise start time is to be changed. For example, referring to the time chart of FIG. 8, in the preset program, as shown by the dotted line, the temperature starts to start at 6 o'clock in the breakfast period, but the lid 2 is opened and closed first. If the operated time (that is, current time N) is 6 o'clock, K> Ks in step S11 in the flowchart described above. ₁ Therefore, as shown by the solid line, the temperature rise starts at N-1 = 5. In addition, in the time chart of FIG. 8, the temperature rising start time in the lunch time zone and the dinner time zone is not changed.
[0033]
In this embodiment, the heating time is set to 3 hours in the morning and evening, and 2 hours in the daytime. However, if the time zone with many lid opening / closing times K is continuous, the heating time is lengthened. When the lid opening / closing frequency K is large only at one place, the temperature raising time may be shortened. In addition, the lid opening / closing count K is sampled at regular intervals, but only the time zone in which the lid opening / closing count K is large may be stored and the temperature rise start time may be changed.
[0034]
Second embodiment
FIG. 9 shows a flowchart of the count control of the lid opening / closing frequency K in the cooked rice warming container according to the second embodiment of the present invention, and FIGS. 10 to 12 show the second embodiment of the present invention. The flowchart of the automatic temperature rising time change control in the cooked rice thermal insulation container concerning is shown.
[0035]
Also in this case, the microcomputer 44 keeps the temperature of the inner pot temperature T detected by the center sensor 8 at a heat retention temperature (for example, 60 ° C.) lower than the normal heat retention temperature (for example, 72 ° C.) and A function as a low temperature heat insulation control means for controlling energization to the work coil 9 and the lid opening / closing frequency K and time detected by the lid opening / closing sensor 39 are stored, and the stored time when the lid opening / closing frequency K is large is stored next time. The function as the meal time estimating means for estimating the meal time from the meal time and the inner pot temperature T is preset at the meal time estimated by the meal time estimating means Temperature rising The work coil 9 starts from a predetermined time before the meal time so as to increase to a set temperature Ts (for example, 110 ° C.). Temperature rise by And said Temperature rising When the set temperature Ts is reached Temperature rising And a function as a temperature rise control means for stopping the operation. In addition, it is programmed at the time of shipment so that the temperature raising control means operates even at 2 o'clock necessary for preventing corruption.
(I) Count control of the number of times the lid is opened and closed (see the flowchart in FIG. 9)
If it is confirmed in step S1 that the temperature is being maintained, it is determined in step S2 whether or not a signal is input from the lid opening / closing sensor 39 (that is, whether or not the lid 2 has been opened / closed), and an affirmative determination is made. If the current time N is 2 to 4 o'clock, 4 o'clock to 6 o'clock, 6 o'clock to 8 o'clock, 8 o'clock to 10 o'clock, 10 to 12 o'clock, 12 o'clock to 14 o'clock in step S3 to step S14 14:00 to 16:00, 16:00 to 18:00, 18:00 to 20:00, 20:00 to 22:00, 22:00 to 24:00, and 24:00 to 2 o'clock are determined, respectively. If it is determined, the lid opening / closing count K in each time zone in steps S15 to S26. ₂ , K _Four , K ₆ , K ₈ , K _Ten , K ₁₂ , K ₁₄ , K ₁₆ , K ₁₈ , K ₂₀ , K _{twenty two} And K _{twenty four} Is incremented by one.
[0036]
That is, one day is divided into 12 time zones every two hours, and the number of times of opening and closing the lid for each time zone is counted.
[0037]
(II) Temperature rise start time change control during breakfast time (see flowchart in FIG. 10)
In step S1 to step S3, the lid open / close count K ₂ And K _Four , K ₆ And K ₈ Are compared with each other, where K ₂ <K _Four , K ₂ <K ₆ And K ₂ <K ₈ Are determined in step S4 and step S5. _Four And K ₆ And K ₈ Is compared here, where K _Four <K ₆ And K _Four <K ₈ Are determined, the process proceeds to step S6, and the lid opening / closing count K ₆ And K ₈ Is compared here, where K ₆ <K ₈ If it is determined, the process proceeds to step S7, where the maximum time N = 8 o'clock of the lid open / close count is determined.
[0038]
K in step S6 ₆ ≧ K ₈ If it is determined, the process proceeds to step S8, where the maximum number of times of opening and closing the lid is determined as N = 6. K in step S5 _Four ≧ K ₈ Is determined, in step S9, the maximum number of lid opening / closing times N = 4 is determined. K in step S3 ₂ ≧ K ₈ If it is determined, the process proceeds to step S10, and the maximum number of times of opening / closing the lid is determined as N = 2.
[0039]
In step S11, the lid opening / closing count K (N-2) and the lid opening / closing count maximum time N (= 2, 4, 6, 8) two hours before the lid opening / closing count maximum time N (= 2, 4, 6, 8). 8) Comparison of the lid opening / closing frequency K (N + 2) after 2 hours is made, and if it is determined that K (N−2) ≧ K (N + 2), the process proceeds to step S12, and the temperature rise start time is N−2. When it is determined that K (N−2) <K (N + 2) (that is, 2 hours before the lid opening / closing frequency is the highest), the process proceeds to step S13, and the temperature rising start time is N (that is, the lid opening / closing time). The most frequent times).
[0040]
(III) Temperature rise start time change control in the lunch time zone (refer to the flowchart of FIG. 11)
In step S1 to step S3, the lid open / close count K _Ten And K ₁₂ , K ₁₄ And K ₁₆ Are compared with each other, where K _Ten <K ₁₂ , K _Ten <K ₁₄ And K _Ten <K ₁₆ Are determined in step S4 and step S5. ₁₂ And K ₁₄ And K ₁₆ Is compared here, where K ₁₂ <K ₁₄ And K ₁₂ <K ₁₆ Are determined, the process proceeds to step S6, and the lid opening / closing count K ₁₄ And K ₁₆ Is compared here, where K ₁₄ <K ₁₆ If it is determined, the process proceeds to step S7, where it is determined that the maximum number of times of opening and closing the lid is N = 16: 00.
[0041]
K in step S6 ₁₄ ≧ K ₁₆ If it is determined, the process proceeds to step S8, where the most frequent time N = 14: 00 is determined. K in step S5 ₁₂ ≧ K ₁₆ Is determined, in step S9, the maximum time N = 12: 00 of the lid open / close count is determined. K in step S3 _Ten ≧ K ₁₆ If it is determined, the routine proceeds to step S10, where the maximum time N = 10 o'clock of the lid opening / closing frequency is determined.
[0042]
Next, in step S11, the lid opening / closing count K (N-2) two hours before the lid opening / closing count maximum time N (= 10, 12, 14, 16) and the lid opening / closing count maximum time N (= 10, 12, 14,. 16) The lid opening / closing frequency K (N + 2) after 2 hours is compared, and if it is determined that K (N−2) ≧ K (N + 2), the process proceeds to step S12, where the temperature rise start time is N−2. If it is determined that K (N−2) <K (N + 2) (that is, 2 hours before the lid opening / closing maximum time), the process proceeds to step S13, and the temperature rising start time is N (that is, the lid opening / closing time). The most frequent times).
[0043]
(IV) Temperature rise start time change control in the dinner time zone (refer to the flowchart of FIG. 12)
In step S1 to step S3, the lid open / close count K ₁₈ And K ₂₀ , K _{twenty two} And K _{twenty four} Are compared with each other, where K ₁₈ <K ₂₀ , K ₁₈ <K _{twenty two} And K ₁₈ <K _{twenty four} Are determined in step S4 and step S5. ₂₀ And K _{twenty two} And K _{twenty four} Is compared here, where K ₂₀ <K _{twenty two} And K ₂₀ <K _{twenty four} Are determined, the process proceeds to step S6, and the lid opening / closing count K _{twenty two} And K _{twenty four} Is compared here, where K _{twenty two} <K _{twenty four} If it is determined, the process proceeds to step S7, where the maximum number of lid opening / closing times N = 24: 00 is determined.
[0044]
K in step S6 _{twenty two} ≧ K _{twenty four} If it is determined, the process proceeds to step S8, and the maximum number of times of lid opening / closing N = 22: 00 is determined. K in step S5 ₂₀ ≧ K _{twenty four} Is determined, in step S9, the maximum number N of lid opening / closing times is set to 20:00. K in step S3 ₁₈ ≧ K _{twenty four} If it is determined, the process proceeds to step S10, where the most frequent time N = 18 o'clock of the lid opening / closing frequency is determined.
[0045]
Next, in step S11, the lid opening / closing count K (N-2) two hours before the lid opening / closing count maximum time N (= 18, 20, 22, 24) and the lid opening / closing count maximum time N (= 18, 20, 22, 24) The lid opening / closing frequency K (N + 2) after 2 hours is compared, and if it is determined that K (N−2) ≧ K (N + 2), the process proceeds to step S12, where the temperature rise start time is N−2. If it is determined that K (N−2) <K (N + 2) (that is, 2 hours before the lid opening / closing maximum time), the process proceeds to step S13, and the temperature rising start time is N (that is, the lid opening / closing time). The most frequent times).
[0046]
As described above, in this embodiment, one day is divided into 12 time zones every two hours, and the time zone with the highest number of lid opening / closing times for each time zone is estimated as the meal time, The temperature rise start time is changed so that the rice in the inner pot 3 is in a “others” state where the temperature is raised.
[0047]
Third embodiment
FIG. 13 shows a flowchart of automatic temperature rise time change control in the cooked rice heat retaining container according to the third embodiment of the present invention.
[0048]
In this case, the microcomputer 44 keeps the temperature of the inner pot temperature T detected by the center sensor 8 at a heat retention temperature (for example, 60 ° C.) lower than the normal heat retention temperature (for example, 72 ° C.) and the work coil. 9 functions as a low temperature heat control means for controlling energization to the heat 9, functions as a heat retention amount detection means for detecting the heat retention amount W of the rice in the inner pot 3, and the heat retention amount W detected by the heat retention amount detection means. A function as a meal time estimating means for storing the time at which the meal time is changed and estimating the stored time as a meal time, and the inner pan temperature T is preset at the meal time estimated by the meal time estimating means Temperature rising The work coil 9 from a predetermined time before the meal time so as to increase to the set temperature Ts. Temperature rise by And said Temperature rising When the set temperature Ts is reached Temperature rising And a function as a temperature rise control means for stopping the operation.
[0049]
Next, with reference to the flowchart shown in FIG. 13, the automatic temperature rising time change control in the cooked rice heat insulating container according to the present embodiment will be described in detail.
[0050]
If it is confirmed in step S1 that the temperature is being maintained, it is determined in step S2 whether or not the temperature raising start timing for detecting the amount of heat has been reached. If an affirmative determination is made here, rice is determined in step S3. Is started (that is, energization of the work coil 9 is started) and a timer is started, and the inner pot temperature T detected by the center sensor 8 in step S4 is input to the microcomputer 44.
[0051]
When it is determined in step S5 that the inner pan temperature T has reached a preset temperature Ts (for example, 90 ° C.), the heating of the rice (that is, energization of the work coil 9) is stopped in step S6. At the same time, the timer is stopped, and the warming amount W of the rice is calculated based on the timer value (ie, time) in step S7, and the current time is stored in the microcomputer 44 in step S8.
[0052]
Next, in step S9, the heat retention amount W of the rice is compared with the previous heat retention amount W ′. If it is determined that W <W ′, the current time is read from the microcomputer 44 in step S10, and step S11. The temperature rise start time is set from the current time. That is, the current time is estimated as the meal time, and the temperature rise start time is set so that the temperature rise is completed by that time.
[0053]
As described above, in the present embodiment, the meal time is estimated from the change in the heat retention amount W of the rice, and the inner pot temperature T is adjusted to the estimated meal time. Temperature rising The temperature is raised to the set temperature. Therefore, the rice can be put in the “others” state according to the user's actual meal time zone.
[0054]
In this embodiment, the heat retaining amount W of rice is calculated based on the time required for the inner pot temperature T to rise by a predetermined temperature, but based on the degree of increase in the inner pot temperature T. The heat retention amount W may be calculated.
[0055]
In the present embodiment, the center sensor is used as means for detecting the heat retention amount, but it is also possible to determine the heat retention amount using a weight sensor.
[0056]
Fourth embodiment
FIG. 14 shows a flowchart of automatic temperature rise time change control in the cooked rice heat-retaining container in the fourth embodiment of the present invention.
[0057]
In this case, the microcomputer 44 keeps the temperature of the inner pot temperature T detected by the center sensor 8 at a heat retention temperature (for example, 60 ° C.) lower than the normal heat retention temperature (for example, 72 ° C.) and the work coil. A function as a low temperature insulation control means for controlling energization to 9 and a meal time estimation for estimating a meal time as a time when the change in the inner pot temperature T detected by the center sensor 8 exceeds a preset set value X The inner pan temperature T is set in advance at the meal time estimated by the function as the means and the meal time estimation means. Temperature rising It has a function as a temperature rise control means for controlling energization to the work coil 9 so as to raise the set temperature.
[0058]
Next, with reference to the flowchart shown in FIG. 14, the automatic temperature rising time change control in the cooked rice heat insulating container according to the present embodiment will be described in detail.
[0059]
If it is confirmed in step S1 that the temperature is being maintained, the inner pot temperature T detected by the center sensor 8 in step S2 is input to the microcomputer 44, and the current temperature T is detected in step S3. ₀ Is stored in the microcomputer 44. When it is determined in step S4 that a predetermined time (for example, 3 minutes) has elapsed, the inner pot temperature T detected at that time in step S5. ₁ Is stored in the microcomputer 44, and the temperature drop degree ΔT = T in step S6. ₀ -T ₁ Is calculated, and the current time is stored in the microcomputer 44 in step S7.
[0060]
In step S8, the temperature drop degree ΔT is compared with the set value X. If it is determined that ΔT> X, the current time is read out in step S9, and the temperature rise starts from the current time in step S10. The time is set. That is, the current time is estimated as the meal time, and the temperature rise start time is set so that the temperature rise is completed by that time.
[0061]
As described above, in the present embodiment, the meal time is estimated based on the change in the inner pot temperature T, and the inner pot temperature T is adjusted according to the estimated meal time. Temperature rising The temperature is raised to the set temperature. Therefore, the rice can be put in the “others” state according to the user's actual meal time zone.
【The invention's effect】
[0062]
According to invention of Claim 1, the container main body which accommodates the inner pot for containing cooked rice, the cover body of this container main body, the heating means which heat-retains and heats the said inner pot, The temperature which detects the temperature of the said inner pot Detecting means, time measuring means for measuring time of day, and low temperature heat control for controlling energization to the heating means so as to keep the temperature of the inner pot detected by the temperature detecting means at a temperature lower than the normal temperature. And a lid opening / closing detection means for detecting opening / closing of the lid body, a lid opening / closing count and time detected by the lid opening / closing detection means, and storing the lid opening / closing count Meal time estimation means for estimating a large time as the next meal time, and the inner pan temperature is preset at the meal time estimated by the meal time estimation means Temperature rising The heating means from a predetermined time before the meal time so as to raise the set temperature Temperature rise by And said Temperature rising When the set temperature is reached Temperature rising Temperature control means for stopping the food, and estimating the meal time from the time when the lid is opened and closed frequently, and adjusting the inner pot temperature according to the estimated meal time Temperature rising Since the temperature is raised to the set temperature, there is an effect that the rice can be put in an “other” state in accordance with the user's actual meal time zone. In addition, there is also an effect that the rice can be kept in a low temperature heat insulation state outside the meal time zone.
[0063]
According to invention of Claim 2, the container main body which accommodates the inner pot for containing cooked rice, the cover body of this container main body, the heating means which heat-retains and heats the said inner pot, The temperature which detects the temperature of the said inner pot Detecting means, time measuring means for measuring time of day, and low temperature heat control for controlling energization to the heating means so as to keep the temperature of the inner pot detected by the temperature detecting means at a temperature lower than the normal temperature. In the cooked rice warming container provided with the means, the warming amount detection means for detecting the warming amount of the rice in the inner pot, and the time when the warming amount detected by the warming amount detection means is changed and stored. Meal time estimation means for estimating the time as meal time, and the inner pan temperature is preset at the meal time estimated by the meal time estimation means Temperature rising The heating means from a predetermined time before the meal time so as to raise the set temperature Temperature rise by And said Temperature rising When the set temperature is reached Temperature rising The temperature rise control means for stopping the cooking is estimated, and the time when the heat retention amount of the rice is changed is estimated as the meal time. Temperature rising Since the temperature is raised to the preset temperature, there is an effect that the rice can be brought into an “other” state in accordance with the user's actual meal time zone. In addition, there is also an effect that the rice can be kept in a low temperature heat insulation state outside the meal time zone.
[0064]
According to invention of Claim 3, the container main body which accommodates the inner pot for containing cooked rice, the cover body of this container main body, the heating means which heat-retains and heats the said inner pot, The temperature which detects the temperature of the said inner pot Detecting means, time measuring means for measuring time of day, and low temperature heat control for controlling energization to the heating means so as to keep the temperature of the inner pot detected by the temperature detecting means at a temperature lower than the normal temperature. And a meal time estimation means for estimating a meal time as a time when a change in the temperature of the inner pan detected by the temperature detection means exceeds a preset set value. The inner pot temperature was preset at the meal time estimated by the means Temperature rising A temperature rise control means for controlling energization to the heating means so as to increase to the set temperature is used to estimate the meal time based on the change in the inner pot temperature, and the inner pot temperature is adjusted according to the estimated meal time. Temperature rising Since the temperature is raised to the set temperature, there is an effect that the rice can be put in an “other” state in accordance with the user's actual meal time zone. In addition, there is also an effect that the rice can be kept in a low temperature heat insulation state outside the meal time zone.
[0065]
As in the invention of claim 4, in the cooked rice heat insulating container according to any one of claims 1, 2, and 3, the estimation of the meal time by the meal time estimating means is performed in three time zones of morning, noon and night. If this is done, the meal time can be estimated more accurately.
[Brief description of the drawings]
[0066]
FIG. 1 is a longitudinal sectional view of a cooked rice heat insulating container according to each embodiment of the present invention.
FIG. 2 is a plan view of an operation panel in the cooked rice heat insulating container according to each embodiment of the present invention.
FIG. 3 is a block diagram showing a control system in the cooked rice heat insulating container according to each embodiment of the present invention.
FIG. 4 is an enlarged cross-sectional view of a main part showing an example of a lid opening / closing sensor in the cooked rice heat insulating container according to each embodiment of the present invention.
FIG. 5 is an enlarged cross-sectional view showing a main part of another example of the lid opening / closing sensor in the cooked rice heat insulating container according to each embodiment of the present invention.
FIG. 6 is a flowchart showing the contents of automatic temperature rise time change control in the cooked rice heat retaining container according to the first embodiment of the present invention.
FIG. 7 is a time chart showing preset automatic temperature rise timing in the cooked rice heat-retaining container according to the first embodiment of the present invention.
FIG. 8 is a time chart showing automatic temperature rise timing in the cooked rice heat retaining container according to the first embodiment of the present invention.
FIG. 9 is a flowchart showing the contents of lid open / close count counting control in the cooked rice warming container according to the second embodiment of the present invention.
FIG. 10 is a block diagram showing the contents of automatic temperature rising time change control for breakfast in the cooked rice heat-retaining container according to the second embodiment of the present invention.
FIG. 11 is a flowchart showing the contents of the automatic temperature rise time change control for lunch in the cooked rice thermal insulation container according to the second embodiment of the present invention.
FIG. 12 is a flowchart showing the contents of the dinner automatic temperature rising time change control in the cooked rice heat-retaining container according to the second embodiment of the present invention.
FIG. 13 is a flowchart showing the contents of automatic temperature rise time change control in the cooked rice heat-retaining container according to the third embodiment of the present invention.
FIG. 14 is a flowchart showing the contents of automatic temperature rising time change control in the cooked rice heat retaining container according to the fourth embodiment of the present invention.
[Explanation of symbols]
[0067]
1 is a container body, 2 is a lid, 3 is an inner pot, 7 is a heating means (electric heater for heat insulation), 8 is a temperature detection means (center sensor), 9 is a heating means (work coil), and 28 is a reheating key. , 39 is a lid opening / closing detection means (lid opening / closing sensor), and 44 is a microcomputer.

Claims (4)

A container main body for storing the inner pot for containing cooked rice, a lid for the container main body, a heating means for keeping the inner pot warm, a temperature detecting means for detecting the temperature of the inner pot, and the time of the day A cooked rice warming container comprising timekeeping means for timing and low temperature heat insulation control means for controlling energization to the heating means so as to keep the inner pot temperature detected by the temperature detection means at a heat insulation temperature lower than a normal heat insulation temperature. A lid opening / closing detection means for detecting opening / closing of the lid body, a lid opening / closing frequency and time detected by the lid opening / closing detection means, and storing the time when the stored lid opening / closing frequency is high from the next meal a meal time estimation means for time and estimated, the heating means before the predetermined time from the meal time to raise the inner bowl temperature to a preset heating temperature setting meal time estimated by said meal time estimating means and to start the heating by Rice insulated container, characterized in that annexed the Atsushi Nobori control means for stopping the heating when it reaches the serial set temperature. A container main body for storing the inner pot for containing cooked rice, a lid for the container main body, a heating means for keeping the inner pot warm, a temperature detecting means for detecting the temperature of the inner pot, and the time of the day A cooked rice warming container comprising timekeeping means for timing and low temperature heat insulation control means for controlling energization to the heating means so as to keep the inner pot temperature detected by the temperature detection means at a heat insulation temperature lower than a normal heat insulation temperature. In addition, a heat retention amount detecting means for detecting a heat retention amount of the rice in the inner pot, a time when the heat retention amount detected by the heat retention amount detection means is changed, and the stored time is estimated as a meal time. a meal time estimating means, the heating by the heating means before the predetermined time from the meal time to raise the inner bowl temperature to a preset heating temperature setting meal time estimated by said meal time estimating means To the set temperature Rice insulated container to a temperature increase control means for stopping heating upon reaching a characterized in that it is attached to. A container main body for storing the inner pot for containing cooked rice, a lid for the container main body, a heating means for keeping the inner pot warm, a temperature detecting means for detecting the temperature of the inner pot, and the time of the day A cooked rice warming container comprising timekeeping means for timing and low temperature heat insulation control means for controlling energization to the heating means so as to keep the inner pot temperature detected by the temperature detection means at a heat insulation temperature lower than a normal heat insulation temperature. The meal time estimating means for estimating the meal time as the time when the change in the temperature of the inner pan detected by the temperature detecting means exceeds a preset value, and the meal time estimated by the meal time estimating means rice insulated container, characterized in that annexed a Atsushi Nobori control means for controlling the energization of the heating means to raise the preset temperature increase set temperature Uchinabe temperature.   The cooked rice heat-retaining container according to any one of claims 1, 2, and 3, wherein the meal time is estimated by the meal time estimating means in three time zones of morning, noon and night.

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