JP4876620B2 - rice cooker - Google Patents

Description

  The present invention relates to a rice cooker having a course for cooking tofu.

  In recent years, “rice cooker cooking” in which cooking is performed using a rice cooker has been performed. The above-mentioned “rice cooker cooking” is for cooking foods other than rice using the course installed in the rice cooker. For example, the white rice course is used to cook cakes, stews, steamed foods, etc. Is. At present, many examples of these “rice cooker cooking” are published on cookbooks or on the Internet.

The tofu course is also the above-mentioned “rice cooker cooking” course, which is a course for making tofu using a rice cooker. As shown in FIG. 11, a rice cooker equipped with such a tofu course is configured to put soy milk 61 into a receiver 60 and create tofu (see, for example, Patent Document 1).
JP-A-1-249020

  In such a conventional configuration, when tofu is completed, a part of the tofu is completed in close contact with the inner bottom portion and the side surface of the receiver 60. There was a problem that when the tofu made in close contact was taken out from the receiver 60, the receiver 60 was damaged by a metal spoon or bean paste. Even in the case of making tofu using a rice cooker, there is a similar problem because soy milk is put directly into the inner pot to make tofu.

  In recent years, the inner surface of the inner pot has been subjected to a fluorine coating treatment, and if the fluorine coating treatment layer is damaged when the tofu is used, the damage becomes a factor. For example, when cooking rice, The convection in the pan was changed, which caused a reduction in rice cooking performance. In addition, once there is a scratch on the bottom of the pan, peeling of the fluorine coating layer of the pan from the scratch expands, which is a factor that impairs the durability of the inner pan.

  To avoid such problems, do not put soy milk directly into the inner pan, but put the container and water into which the soy milk is placed in the inner pan, warm the water by heating means, and heat the water soy milk in the container. There is also a cooking method that indirectly heats tofu to make tofu. However, in this cooking method, since the container is put in the inner pot, depending on the material of the container, for example, if it is a metal container or a glass container, the pot bottom is damaged when the container is installed in the inner pot. There was a case. If the container is made of resin, there is no danger of damaging the bottom of the pan, but cooking is started when it is not in normal use, such as forgetting to add water or foreign matter in the inner pan and pan temperature detection means. If the temperature of the inner pot rises when it is closed, there is a possibility that the container will melt.

  The present invention solves the above-mentioned conventional problems, when the soy milk in a resin container is indirectly heated by the heat of water and a cooking method for making tofu is adopted, without damaging the bottom of the pan, and when not in a normal use state An object of the present invention is to provide a rice cooker that can make tofu without melting the resin container even when cooking is started.

In order to achieve the above object, the present invention detachably houses an inner pot in a rice cooker body, detects the temperature of the bottom of the inner pot by means of a pan temperature detecting means, and covers the top opening of the rice cooker body. Covered by the body so that it can be opened and closed, a lid temperature detecting means is disposed in the lid body, a heat resistant resin container filled with soy milk is installed in the inner pot, and information on the pot temperature detecting means and the lid temperature detecting means is provided by the control means. The heating means is controlled based on this, the water in the inner pot and the inner pot is heated, and the heat-resistant resin container is indirectly heated with the heated water to cook the soy milk filled in the heat-resistant resin container into tofu When the third predetermined temperature is detected within the third predetermined time after the determination means detects the second predetermined temperature within the second predetermined time, the inner pot and pan temperature detecting means configured to determine whether to start the cooking in a state in which the foreign matter is present between the And, control means based on the result of the determination means, which is constituted to control the heating means.

As a result, even when cooking has started in the presence of foreign matter between the inner pot and the pan temperature detection means , abnormal heating of the inner pot can be avoided, and the heat resistance installed in the inner pot It is possible to prevent the resin container from melting.

  The rice cooker of the present invention can avoid abnormal heating of the inner pot even when cooking is started in a case where it is not in a normal use state, and the heat resistant resin container installed in the inner pot does not melt You can make tofu.

1st invention is a rice cooker main body, the inner pot detachably accommodated in this rice cooker main body, the pan temperature detection means which detects the temperature of the bottom of this inner pan, and the upper surface opening part of the said rice cooker main body A lid that can be freely opened and closed, a lid temperature detecting means disposed in the lid, a heat-resistant resin container that is installed in the inner pot and filled with soy milk, and heating that heats the food in the inner pot And the heating means based on the information of the pan temperature detecting means and the lid temperature detecting means to heat the water in the inner pot and the inner pot by the heating means, and the heat resistant by the heated water A control means having a function of cooking soy milk filled in the heat-resistant resin container into tofu by indirectly heating the heat-resistant resin container, and the pan temperature detecting means has a second predetermined temperature within a second predetermined time. If a third predetermined temperature is detected within a third predetermined time after detecting And a judging means for foreign objects between the inner pot and pan temperature detecting means is determined to have started cooking in the presence, the control means based on the result of the determination unit, configured to control said heating means Even when cooking is started when not in normal use, abnormal heating of the inner pot can be avoided, and the heat-resistant resin container installed in the inner pot can be prevented from melting. be able to.

Furthermore, even if cooking is started in the presence of foreign matter between the inner pot and the pan temperature detection means, abnormal heating of the inner pot can be avoided more reliably, and the heat resistance installed in the inner pot It is possible to prevent the resin container from melting.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a block diagram of a rice cooker according to Embodiment 1 of the present invention, and FIG. 2 is a sectional view of the rice cooker. In order to simplify the drawing, lead wires and the like for electrical connection are omitted.

  As shown in FIG. 2, the rice cooker body 1 is formed in a substantially arc shape whose upper surface is open, and a protective frame 2 that is a pot storage portion is disposed inside the rice cooker body 1. An inner pot 3 having a water level line drawn on the inner peripheral surface is detachably disposed inside 2. An induction heating coil 5 that is a heating means 25 is disposed outside the protective frame 2. The heating means 25 described above may be a heater. Between the protective frame 2 and the inner pot 3, a pan temperature detecting means 6 is disposed to play a role of detecting the temperature of the inner pot 3.

  The lid body 7 is attached to the upper part of the rice cooker body 1 so as to be openable and closable, and an inner lid 9 having a steam passage 8 at the center is disposed below the lid body 7. A lid heat radiating plate 10 provided with a lid heating means 4 for radiatively heating the inner lid 9 is disposed on the upper portion of the inner lid 9, and a lid temperature detecting means 11 is disposed at the center of the lid heat radiating plate 10. is doing. The lid temperature detecting means 11 plays a role of detecting the temperature of the lid body 7, and when the moisture contained in the food 12 in the inner pot 3 is heated by the heating means 25 to become steam, the steam is detected. By constituting so that it may hit the lid temperature detection means 11 vicinity, the role of the boiling detection of the foodstuff 12 in the inner pot 3 is also played.

Next, as shown in FIG. 1, the control means 20 and the determination means 21 are constituted by a microcomputer 24. The determination means 21 determines whether cooking has started in an abnormal state that is not in a normal use state based on information from the pan temperature detection means 6 and inputs the result to the control means 20. The control unit 20 controls the current for causing the heating unit 25 to generate an alternating magnetic field based on the result of the determination unit 21 and the temperature information of the pan temperature detection unit 6 and the lid temperature detection unit 11. Further, it controls a buzzer (not shown) as the notification means 22 and an LCD (not shown) as the display means 23.

  Here, operation | movement of the tofu course mounted in a rice cooker is demonstrated, referring FIG. 3 and FIG. When cooking tofu on the tofu course, as shown in FIG. 3, a heat resistant resin container 15 is installed in the inner pot 3, and a certain amount of water 16 is placed in the inner pot 3, and soy milk 17 is added. It puts in the heat-resistant resin container 15 and starts cooking 30. The soymilk 17 is mixed with a certain amount of coagulant to solidify the tofu.

  Here, since the soymilk 17 filled in the heat-resistant resin container 15 is indirectly heated through the water 16 to make tofu, the temperature of the water 16 in the inner pot 3 needs to be increased once. There is. Therefore, a current is continuously supplied from the control means 20 to the heating means 25 immediately after the start. The food 12 in the inner pot 3 is continuously heated by the heating means 25, and eventually the water 16 in the inner pot 3 boils and becomes steam.

  As shown in FIG. 2, the water vapor passes through a steam passage 8 disposed at the center of the inner lid 9 and is discharged to the outside of the rice cooker. In the process in which the water vapor is discharged to the outside, the lid temperature detecting means 11 disposed in the center of the lid heat radiating plate 10 above the steam passage 8 is heated by the water vapor. In the process, when the lid temperature detecting means 11 detects a predetermined temperature (usually 80 ° C.), the supply of continuous current from the control means 20 to the heating means 25 is stopped, and the continuous food supply 12 in the inner pot 3 is stopped. Interrupt heating. The above process is hereinafter referred to as a boiling detection process 31.

  When the boiling detection step 31 is completed, the control unit 20 controls the amount of power supplied to the heating unit 25 so that the temperature detected by the pan temperature detection unit 6 is constant. Hereinafter, this process is referred to as a temperature adjustment process 32. In this temperature adjustment step 32, the soymilk 17 filled in the heat resistant resin container 15 is indirectly heated with the water 16 warmed by the heating means 25. The temperature detected by the pan temperature detection means 6 is about 80 ° C., and the end time of the temperature adjustment step 32 is 60 to 90 minutes from the cooking start 30. In addition, you may set the above-mentioned detection temperature and time flexibly by the material of the inner pot 3, the structure of a rice cooker, etc. Thus, the soy milk 17 filled in the heat resistant resin container 15 can be made tofu by indirectly heating the soy milk 17 filled in the heat resistant resin container 15 at a constant temperature. After completion of the temperature adjustment step 32, the cooking of tofu ends.

  Since the rice cooker of this invention puts the heat resistant resin container 15 in the inner pot 3 and cooks, it has the countermeasure which prevents the inner pot 3 being heated abnormally and the heat resistant resin container 15 melt | dissolving. . That is, the control unit 20 is configured to control the heating unit 25 based on the result of the determination unit 21 that determines whether cooking is started in an abnormal state other than the normal use state based on the information of the pan temperature detection unit 6. When the pan temperature detecting unit 6 detects the first predetermined temperature θ1 within the first predetermined time T1, the determining unit 21 determines that cooking has started without water in the inner pan 3. ing.

  In the above configuration, the operation will be described with reference to FIG. FIG. 5 (a) shows that cooking is started in a state where water 16 is forgotten to be put in the inner pot 3 (state of an empty pan shown by a dotted line), and cooking is started in a normal use state (state shown by a solid line). It is the graph which showed the raise of the detection temperature of the pan temperature detection means 6 in case, and the relationship of time.

As shown in the figure, the tendency of the temperature rise between the state where the water 16 is forgotten to be put in the inner pot 3 and the normal use state is greatly different. If you forget to put water 16 in the inner pot 3 and heat it up to the first predetermined time T1, there is no water 16 in the inner pot 3, so the inner pot 3 is easy to be heated, compared to the normal use state, The slope of temperature rise is steep. When the inner pot 3 is suddenly heated and the temperature of the inner pot 3 becomes abnormally high, there is a possibility of occurrence of an event that the heat-resistant resin container 15 installed in the inner pot 3 is dissolved. Therefore, when the temperature detected by the pan temperature detecting means 6 reaches the first predetermined temperature θ1 before the first predetermined time T1 has elapsed from the start of cooking, the determining means 21 enters the water 16 in the inner pot 3. The control means 20 controls the current so as to avoid abnormal heating of the inner pot 3.

  Next, a process of avoiding abnormal heating of the inner pot 3 in a state where the water 16 has been forgotten to be put in the inner pot 3 will be described with reference to the flowchart of FIG. After cooking is started in step 30, timing is started in step 34. Next, after timing in step 35, temperature detection is performed by the pan temperature detecting means 6 in step 36, and it is determined whether the detected temperature has reached the first predetermined temperature θ1. If the first predetermined temperature θ1 has not been reached in step 36, the process proceeds to step 38, and it is determined whether the first predetermined time T1 has elapsed since the start of cooking.

  If the first predetermined time T1 has not elapsed in step 38, the process returns to step 35, and the operations of steps 35, 36, and 38 are repeated. When the first predetermined temperature θ1 is reached in step 36 before the first predetermined time T1 has elapsed in step 38, the determination means 21 has forgotten to put the water 16 in the inner pot 3. In order to avoid the abnormal heating of the inner pot 3, the process proceeds to step 37 to stop the supply of current to the heating means 25. When the first predetermined time T1 has elapsed in step 38 until the first predetermined temperature θ1 is reached in step 36, the determination means 21 determines that the normal use state has been reached, and the next step (step 39) is performed. Transition.

  As described above, in the present embodiment, the control unit 20 is based on the result of the determination unit 21 that determines whether cooking has started in an abnormal state other than the normal use state based on the information of the pan temperature detection unit 6. In addition, the heating means 25 is configured to be controlled, and the determination means 21 cooks in a state where there is no water in the inner pot 3 when the pot temperature detecting means 6 detects the first predetermined temperature within the first predetermined time. Because it is judged that it has started, even if cooking is started with no water in the inner pot 3, abnormal heating of the inner pot 3 can be avoided and installed in the inner pot 3 The melted heat resistant resin container 15 can be prevented from melting. Note that θ1 and T1 may be set flexibly depending on the material of the inner pot 3, the configuration of the rice cooker, and the like. In the present embodiment, θ1 = 73.5 ° C. and T1 = 64 s were set to avoid abnormal heating of the inner pot 3.

(Embodiment 2)
The determining means 21 shown in FIG. 1 has a foreign object between the inner pot 3 and the pan temperature detecting means 6 if the pot temperature detecting means 6 does not detect the second predetermined temperature θ2 within the second predetermined time T2. It is determined that cooking has started in the state, and the control unit 20 is configured to control the heating unit 25 based on the result of the determination unit 21. Other configurations are the same as those of the first embodiment.

  The operation of the above configuration will be described with reference to FIG. FIG. 6A shows a case where the temperature adjustment process 32 is started in a state where foreign matter exists between the inner pot 3 and the pan temperature detecting means 6 (a state where foreign matter is mixed as indicated by a dotted line), and a normal use state (in a solid line). It is the graph which showed the temperature rise of the pan temperature detection means 6 at the time of starting the temperature adjustment process 32 in the state shown), and time.

As shown in the figure, the tendency of the temperature rise in the state where foreign matter exists between the inner pot 3 and the pot temperature detecting means 6 and the normal use state are greatly different. When there is a foreign object between the inner pot 3 and the pan temperature detecting means 6, the inner pot 3 and the pot temperature detecting means 6 are not in contact with each other, so the pot temperature detecting means 6 is more than the actual temperature of the inner pot 3. A low value is detected, and the slope of the temperature rise is gentle compared to the case of normal use. In the normal use state, the temperature adjustment step 32 adjusts the temperature so that the pan temperature detecting means 6 becomes the second predetermined temperature θ2, and therefore there is a foreign object between the inner pot 3 and the pan temperature detecting means 6. When cooking is performed, the temperature detected by the pan temperature detecting means 6 is always lower than the second predetermined temperature θ2, so that the control means 20 increases the temperature detected by the pan temperature detecting means 6 to the second predetermined temperature θ2. A constant amount of current is always supplied to the heating means 25 to heat the inner pot 3.

  In the case of normal use, in this temperature adjustment step 32, the soymilk 17 filled in the heat-resistant resin container 15 is cooked by indirect heating with water 16 to make tofu, so that the process time is changed. The predetermined time T2 of 2 needs to be long. Therefore, if cooking continues in a state where there is a foreign object between the inner pot 3 and the pan temperature detecting means 6, the inner pot 3 will always be heated, so the water 16 in the inner pot 3 will eventually boil, There is a possibility that all the steam will be discharged to the outside of the rice cooker before the second predetermined time T2 elapses. Once there is no water 16 in the inner pot 3, the inner pot 3 is heated suddenly, and the temperature of the inner pot 3 becomes abnormally high, the heat-resistant resin container 15 installed in the inner pot 3 is dissolved. There is a possibility of the occurrence of an event.

  Therefore, in this embodiment, if the temperature detected by the pan temperature detecting means 6 does not reach the second predetermined temperature θ2 before the time from the start of the temperature adjustment step 32 passes the second predetermined time T2. The determination means 21 determines that there is a foreign object between the inner pot 3 and the pot temperature detection means 6, and the control means 20 controls the current so as to avoid abnormal heating of the inner pot 3.

  Next, a process of avoiding abnormal heating of the inner pot 3 in the state where foreign matter exists between the inner pot 3 and the pot temperature detecting means 6 will be described with reference to the flowchart of FIG. After the temperature adjustment process 32 is started in step 40, timing is started in step 41. After timekeeping in step 42, temperature detection is performed by the pan temperature detecting means 6 in step 43 to determine whether the detected temperature has reached the second predetermined temperature θ2. If the second predetermined temperature θ2 has not been reached at step 43, the routine proceeds to step 45, where it is determined whether the second predetermined time T2 has elapsed since the temperature adjustment step 32 was started. If the second predetermined time T2 has not elapsed in step 45, the process returns to step 42 and the operations of steps 42, 43, and 45 are repeated. And when 2nd predetermined time T2 passes in step 45 until it reaches 2nd predetermined temperature (theta) 2 in step 43, the foreign material exists between the inner pot 3 and the pan temperature detection means 6 The determination means 21 determines that it is, the process proceeds to step 46, and the supply of current to the heating means 25 for avoiding abnormal heating of the inner pot 3 is stopped. If the second predetermined temperature θ2 has been reached in step 43 before the second predetermined time T2 has elapsed in step 45, the determination means 21 determines that it is in a normal use state, and the next step (step 44). Migrate to

  As described above, in the present embodiment, if the pan temperature detecting means 6 does not detect the second predetermined temperature θ2 within the second predetermined time T2, a foreign matter is placed between the inner pot 3 and the pan temperature detecting means 6. Since the control means 20 is configured to control the heating means 25 based on the result of the determination means 21, the control means 20 is configured to control the heating means 25 based on the result of the determination means 21. Even if cooking is started in a state where foreign matter is present, abnormal heating of the inner pot 3 can be avoided and the heat-resistant resin container 15 installed in the inner pot 3 can be prevented from melting. . In addition, you may set (theta) 2 and T2 flexibly by the material of the inner pot 3, the structure of a rice cooker, etc. In the present embodiment, θ2 = 80.0 ° C. and T2 = 40.0 min were set to avoid abnormal heating of the inner pot 3.

(Embodiment 3)
The determining means 21 shown in FIG. 1 detects the third predetermined temperature θ3 within the third predetermined time T3 after the pan temperature detecting means 6 detects the second predetermined temperature θ2 within the second predetermined time T2. Then, it is determined that cooking has started in a state where foreign matter exists between the inner pot 3 and the pan temperature detecting means 6, and the control means 20 controls the heating means 25 based on the result of the determination means 21. It is composed. Other configurations are the same as those in the first or second embodiment.

  The operation of the above configuration will be described with reference to FIG. FIG. 7A shows a case where the temperature adjustment process 32 is started in a state where foreign matter exists between the inner pot 3 and the pan temperature detecting means 6 (a state where foreign matter is mixed as indicated by a dotted line), and a normal use state (in a solid line). It is the graph which showed the temperature rise of the pan temperature detection means 6 at the time of starting the temperature adjustment process 32 in the state shown), and time. Normally, as shown in FIG. 7 (a), the tendency of the temperature rise in the state where foreign matter is present between the inner pot 3 and the pan temperature detecting means 6 and the normal use state is greatly different. Depending on the configuration of the vessel, there may be little difference in temperature rise, and it may not be possible to determine the presence of foreign matter between the inner pan 3 and the pan temperature detecting means 6 only by the tendency of temperature rise. .

  In that case, cooking proceeds as a normal use state, but the inner pot 3 is always heated because it is detected lower than the normal use state even though there is not much difference in the detected temperature. When this happens, the water 16 in the inner pot 3 will eventually boil and become water vapor, which may be discharged outside the rice cooker before cooking is completed. Once there is no water 16 in the inner pot 3, the inner pot 3 is heated suddenly, and the temperature of the inner pot 3 becomes abnormally high, the heat-resistant resin container 15 installed in the inner pot 3 is dissolved. There is a possibility of the occurrence of an event.

  Therefore, in the present embodiment, when the temperature from the process start of the temperature adjustment process 32 reaches the second predetermined temperature θ2 by the time the second predetermined time T2 elapses, Once the supply of current to the heating means 25 is stopped. Then, when it is detected that the detected temperature has fallen below the third predetermined temperature θ3 by the time when the third predetermined time T3 has elapsed since that time, the determination means 21 detects a foreign matter between the inner pot 3 and the pot temperature detecting means 6. And the control means 20 controls the current so as to avoid abnormal heating of the inner pot 3.

  As shown in FIG. 7B, this means that the heated inner pot 3 and the pan temperature detecting means 6 are not in contact with each other when there is a foreign object between the inner pot 3 and the pan temperature detecting means 6. Therefore, it is utilized that the tendency of temperature decrease is significantly different from that in the normal use state.

  Next, a process of avoiding abnormal heating of the inner pot 3 in the state where foreign matter exists between the inner pot 3 and the pan temperature detecting means 6 will be described with reference to the flowchart of FIG. After the temperature adjustment process 32 is started in step 40, timing is started in step 41. After timing, the temperature is detected by the pan temperature detecting means 6 in step 43 to determine whether the detected temperature has reached the second predetermined temperature θ2. If the second predetermined temperature θ2 has not been reached, it is determined in step 45 whether the second predetermined time T2 has elapsed since the temperature adjustment step 32 was started. If the second predetermined time T2 has not elapsed in step 45, the process returns to step 42 and the operations of steps 42, 43, and 45 are repeated. And when 2nd predetermined time T2 passes in step 45 until it reaches 2nd predetermined temperature (theta) 2 in step 43, the foreign material exists between the inner pot 3 and the pan temperature detection means 6 Then, the determination means 21 determines that the current is supplied to the heating means 25 in order to avoid the abnormal heating of the inner pot 3.

  When the detected temperature reaches the second predetermined temperature θ2 in step 43, the process proceeds to step 47, the supply of current to the heating means 25 is temporarily stopped, and the time measurement of T ′ is newly started in step 48. After the time is measured in step 49, the temperature is detected by the pan temperature detecting means 6 in step 50, and it is determined whether the detected temperature is lower than the third predetermined temperature θ3. If the temperature falls below the third predetermined temperature θ3, the process proceeds to step 46 where the determination means 21 determines that there is a foreign object between the inner pot 3 and the pot temperature detection means 6, and the inner pot 3 is abnormally heated. In order to avoid this, the supply of current to the heating means 25 is stopped.

If the detected temperature does not reach the third predetermined temperature θ3 in step 50, the process proceeds to step 51, and it is determined whether the third predetermined time T3 has elapsed since the second predetermined temperature θ2 was detected. To do. When the third predetermined time T3 has elapsed, the determination means 21 determines that the normal use state has been reached, and the process proceeds to the next step (step 52).

  As described above, in the present embodiment, the determination unit 21 detects the second predetermined temperature θ2 within the second predetermined time T2 after the pan temperature detection unit 6 detects the second predetermined temperature T2 within the third predetermined time T3. When the third predetermined temperature T3 is detected, it is determined that cooking has started in a state where there is a foreign object between the inner pot 3 and the pan temperature detecting means 6, and the control means 20 is based on the result of the determining means 21. Therefore, even if cooking is started in a state where there is a foreign object between the inner pot 3 and the pan temperature detecting means 6, the abnormal heating of the inner pot 3 is more reliably performed. Can be avoided, and melting of the heat-resistant resin container 15 installed in the inner pot 3 can be prevented. In addition, you may set (theta) 3 and T3 flexibly by the material of the inner pot 3, the structure of a rice cooker, etc. In the present embodiment, θ3 = 70.0 ° C. and T3 = 124 s were set to avoid abnormal heating of the inner pot 3.

(Embodiment 4)
The determining means 21 shown in FIG. 1 is in a state where there is no water in the inner pot 3 and the inner pot 3 and the pot temperature when the pot temperature detecting means 6 detects the fourth predetermined temperature θ4 within the fourth predetermined time T4. The controller 20 is configured to control the heating unit 25 based on the result of the determination unit 21 so that it is determined that cooking has been started in a state where foreign matter exists between the detection units 6. Other configurations are the same as those of the first embodiment.

  The operation of the above configuration will be described with reference to FIG. FIG. 8A shows the case where cooking is started in a state where the water 16 is forgotten to be put in the inner pot 3 (the state of the empty pot indicated by a dotted line). Forgetting to put water 16 in the inner pot 3 and foreign matter is present between the inner pot 3 and the pan temperature detecting means 6 (empty pan shown with dotted line + foreign matter mixed state) and normal use state (shown with solid line) It is the graph which showed the temperature rise of the pan temperature detection means 6 at the time of starting cooking in the state, and the relationship of time.

  As shown in the figure, the state in which the water 16 has been forgotten to be put in the inner pot 3, the state in which the water 16 has been forgotten in the inner pot 3, and there is a foreign object between the inner pot 3 and the pan temperature detecting means 6, The tendency of the temperature rise between the pan 3 and the normal use state is different. Forgetting to put water 16 in the inner pot 3 and there is a foreign object between the inner pot 3 and the pot temperature detecting means 6, the temperature rise of the pot temperature detecting means 6 forgot to put the water 16 in the inner pot 3. In spite of being in a state, foreign matter exists between the inner pot 3 and the pan temperature detecting means 6, so that the detected temperature of the pot temperature detecting means 6 becomes the first predetermined temperature θ1 by the first predetermined time T1. Not reach.

  If cooking is performed in this state, the inner pot 3 is suddenly heated, the temperature of the inner pot 3 becomes abnormally high, and the heat-resistant resin container 15 installed in the inner pot 3 is dissolved. An event may occur. Therefore, in this Embodiment, after passing the process which can be judged that the pan temperature detection means 6 started cooking in the state without the water 16 in the inner pot 3, the process elapsed time is set to the fourth predetermined time T4. When the detected temperature of the pan temperature detecting means 6 reaches the fourth predetermined temperature θ4 by the time elapsed, the determination means 21 is in a state where there is no water 16 in the inner pot 3, and the inner pot 3 and the pot temperature detecting means. 6, it is determined that cooking has started in a state where foreign matter is present, and the control means 20 controls the current so as to avoid abnormal heating of the inner pot 3.

  Next, FIG. 8B shows a process for avoiding abnormal heating of the inner pot 3 when the water 16 is forgotten to be put in the inner pot 3 and foreign matter is present between the inner pot 3 and the pot temperature detecting means 6. This will be described with reference to the flowchart. After starting the process in step 60, time is measured in step 61. The timing is started when cooking is started. After measuring the time, the temperature is detected by the pan temperature detecting means 6 in step 62 to determine whether the detected temperature has reached the fourth predetermined temperature θ4.

  If the detected temperature does not reach the fourth predetermined temperature θ4 in step 62, the process proceeds to step 64 to check whether the lid temperature detecting means 11 has reached the predetermined temperature φ1. Here, the reason for confirming the temperature of the lid temperature detecting means 11 is that when there is water 16 in the inner pot 3, the temperature of the lid temperature detecting means 11 may be increased by being heated by water vapor. This is for determining the presence or absence of water 16 in the inner pot 3 as a determination criterion. When the predetermined temperature φ1 has been reached, it is determined that the normal use state or a foreign object exists between the inner pan 3 and the pan temperature detecting means 6 (there is water 16 in the inner pan 3), and the next step (step 65). The state in which foreign matter exists between the inner pot 3 and the pan temperature detecting means 6 is determined to be abnormal use in the temperature adjustment step 32 as in the above-described step. Absent. If the predetermined temperature φ1 has not been reached, the process proceeds to step 66, where it is determined whether T4 has elapsed since the start of cooking.

  If the fourth predetermined time T4 has not elapsed in step 66, the process returns to step 61, and the operations of steps 61, 62, 64, 66 are repeated. If the fourth predetermined temperature θ4 is reached at step 62 before the fourth predetermined time T4 elapses at step 66, the routine proceeds to step 63, where heating for avoiding abnormal heating of the inner pot 3 is performed. The supply of current to the means 25 is stopped. When the fourth predetermined time T4 has elapsed in step 66, the determination means 21 determines that the normal use state is in effect, and the process proceeds to the next step (step 65).

  As described above, in the present embodiment, when the pan temperature detecting unit 6 detects the fourth predetermined temperature θ4 within the fourth predetermined time T4, the determination unit 21 is in a state where there is no water in the inner pan 3. In addition, it is determined that cooking has started in a state where there is a foreign object between the inner pot 3 and the pan temperature detection means 6, and the control means 20 controls the heating means 25 based on the result of the determination means 21. Even if you forget to put water 16 in the inner pot 3 and start cooking in the presence of foreign matter between the inner pot 3 and the pan temperature detecting means 6, the inner pot 3 is heated abnormally. Can be avoided, and melting of the heat-resistant resin container 15 installed in the inner pot 3 can be prevented. In addition, you may set (theta) 4 and T4 flexibly by the material of the inner pot 3, the structure of a rice cooker, etc. In the present embodiment, θ4 = 117.0 ° C., φ1 = 70.0 ° C., T4 = 480 s, and abnormal heating of the inner pot 3 was avoided.

(Embodiment 5)
1 determines that the determination means 21 has started cooking in an abnormal state other than the normal use state based on the information of the pan temperature detection means 6, the notification means 22 is notified so as to notify that effect. I try to control it. Other configurations are the same as those of the first embodiment.

  In the above configuration, an operation when notifying that when it is determined that cooking has started in an abnormal state other than the normal use state will be described with reference to FIG.

  After cooking is started in step 30, timing is started in step 34. Next, after timing in step 35, temperature detection is performed by the pan temperature detecting means 6 in step 36, and it is determined whether the detected temperature has reached the first predetermined temperature θ1. If the first predetermined temperature θ1 has not been reached in step 36, the process proceeds to step 38, and it is determined whether the first predetermined time T1 has elapsed since the start of cooking.

If the first predetermined time T1 has not elapsed in step 38, the process returns to step 35, and the operations of steps 35, 36, and 38 are repeated. If the first predetermined temperature θ1 is reached in step 36 before the first predetermined time T1 has passed in step 38, the determination means 21 cooks without the water 16 in the inner pot 3. It is determined that the start 30 has been started, the process proceeds to step 70, and a notification to that effect is given by a buzzer (not shown) as the notification means 22. And in order to avoid the abnormal heating of the inner pot 3, it progresses to step 37 and the supply of the electric current to the heating means 25 is stopped. When the first predetermined time T1 has elapsed in step 38 until the first predetermined temperature θ1 is reached in step 36, the determination means 21 determines that the normal use state has been reached, and the next step (step 39) is performed. Transition.

  As described above, in the present embodiment, when the determination unit 21 determines that cooking has started in an abnormal state other than the normal use state based on the information of the pan temperature detection unit 6, a notification is made to notify that effect. Since the means 22 is controlled, it is possible to inform the user that cooking has been performed in an abnormal state and to prevent a reoccurrence of abnormal use.

(Embodiment 6)
When the determination means 21 determines that cooking has started in an abnormal state other than the normal use state based on information from the pan temperature detection means 6, the control means 20 shown in FIG. Other configurations are the same as those of the first embodiment.

  In the above configuration, an operation when displaying that when it is determined that cooking has started in an abnormal state other than the normal use state will be described with reference to FIG.

  After cooking is started in step 30, timing is started in step 34. Next, after timing in step 35, temperature detection is performed by the pan temperature detecting means 6 in step 36, and it is determined whether the detected temperature has reached the first predetermined temperature θ1. If the first predetermined temperature θ1 has not been reached in step 36, the process proceeds to step 38, and it is determined whether the first predetermined time T1 has elapsed since the start of cooking.

  If the first predetermined time T1 has not elapsed in step 38, the process returns to step 35, and the operations of steps 35, 36, and 38 are repeated. If the first predetermined temperature θ1 is reached in step 36 before the first predetermined time T1 has passed in step 38, the determination means 21 cooks without the water 16 in the inner pot 3. It is determined that the start 30 is started, and the process proceeds to step 71, and a message to that effect is displayed on the LCD (not shown) as the display means 23. And in order to avoid the abnormal heating of the inner pot 3, it progresses to step 37 and the supply of the electric current to the heating means 25 is stopped. When the first predetermined time T1 has elapsed in step 38 until the first predetermined temperature θ1 is reached in step 36, the determination means 21 determines that the normal use state has been reached, and the next step (step 39) is performed. Transition.

  As described above, in the present embodiment, when the determination unit 21 determines that cooking has started in an abnormal state other than the normal use state based on the information of the pan temperature detection unit 6, the fact is displayed. Therefore, it is possible to inform the user that the cooking was in an abnormal state, and the recurrence of abnormal use can be prevented.

  As described above, the rice cooker according to the present invention can avoid abnormal heating of the inner pot even when cooking is started in a case where it is not in a normal use state, and is heat resistant installed in the inner pot. Since the tofu can be made without melting the resin container, it is useful as a rice cooker having a course for cooking tofu.

The block diagram of the rice cooker of Embodiment 1 of this invention Cross section of the rice cooker Cross section of inner pot and heat-resistant resin container of the rice cooker Outline flowchart of the tofu course of the rice cooker (A) The graph which showed the temperature rise of the pan temperature detection means of the rice cooker, and the relationship of time (b) The principal part flowchart of the rice cooker (A) The graph which showed the temperature rise and time relationship of the pan temperature detection means of the rice cooker of Embodiment 2 of this invention (b) The principal part flowchart of the rice cooker (A) The graph which showed the temperature rise of the pan temperature detection means of the rice cooker of Embodiment 3 of this invention and the relationship of time (b) The temperature fall of the pan temperature detection means of the rice cooker and the relationship of time were shown. Graph (c) Main part flow chart of the rice cooker (A) The graph which showed the temperature rise and time relationship of the pan temperature detection means of the rice cooker of Embodiment 4 of this invention (b) The principal part flowchart of the rice cooker The principal part flowchart of the rice cooker of Embodiment 5 of this invention The principal part flowchart of the rice cooker of Embodiment 6 of this invention Cross section of the main part of a conventional rice cooker

DESCRIPTION OF SYMBOLS 1 Rice cooker body 3 Inner pan 4 Lid heating means 6 Pan temperature detection means 7 Lid body 11 Lid temperature detection means 15 Heat resistant resin container 20 Control means 21 Judgment means 25 Heating means

Claims (1)

A rice cooker body, an inner pot that is detachably stored in the rice cooker body, a pan temperature detecting means for detecting the temperature of the bottom of the inner pot, and a lid that freely opens and closes the upper surface opening of the rice cooker body Body, lid temperature detection means disposed in the lid body, heat-resistant resin container installed in the inner pot and filled with soy milk, heating means for heating the food in the inner pot, and the pot temperature The heating means is controlled based on the information of the detection means and the lid temperature detection means, the water in the inner pot and the inner pot is heated by the heating means, and the heat-resistant resin container is indirectly heated by the heated water. After the control means having the function of cooking the soy milk filled in the heat-resistant resin container into tofu and the pan temperature detecting means detects the second predetermined temperature within the second predetermined time, When the third predetermined temperature is detected within the predetermined time of 3, the inner pot and the pot temperature Cooker and a determination means for determining that foreign matter has started cooking in the presence, said control means configured so that based on the results of the determination means, for controlling said heating means between the known means.