Cooking device

Abstract

To provide a heating cooker having a novel mechanism for detecting opening / closing of a lid, for example.SOLUTION: A heating cooker includes a cooker body having a heating cooking chamber opened upward, a lid capable of opening / closing an opening of the heating cooking chamber, a temperature sensor for measuring a temperature in the heating cooking chamber, and a detection part for detecting an opening / closing state of the lid by a measured temperature measured by the temperature sensor.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to a cooking appliance. [Background technology]

[0002] Patent Document 1 describes a cooking device that includes a circuit for detecting whether the lid is open or closed. The cooking device described in Patent Document 1 uses a Hall IC (Integrated Circuit) to detect whether the lid is open or closed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-33712 Summary of the Invention [Problem to be solved by the invention]

[0004] There is a need for a new mechanism to detect whether the lid of a cooking appliance is open or closed.

[0005] A main object of the present disclosure is to provide a cooking appliance having a novel mechanism for detecting, for example, whether the lid is open or closed. [Means for solving the problem]

[0006] In one aspect of the present disclosure, a cooking appliance includes a cooking appliance body having a cooking chamber that opens upward, a lid that can open and close the opening of the cooking chamber, a temperature sensor that measures the temperature inside the cooking chamber, and a detection unit that detects the open / closed state of the lid based on the temperature measured by the temperature sensor. [Effects of the Invention]

[0007] According to the present disclosure, for example, a cooking device having a novel mechanism for detecting whether the lid is open or closed can be provided. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic perspective view of a cooking device according to a first embodiment. [Figure 2] FIG. 2 is a schematic perspective view of the cooking device with the lid open. [Figure 3] FIG. 2 is a block diagram of the cooking device. [Figure 4] 10 is an example of a change over time in the ambient temperature of a cooking device. [Figure 5] 10 is a flowchart showing the start of a detection mode in the cooking appliance. [Figure 6] 4 is an example of a flowchart of a detection mode in the first embodiment. [Figure 7] 10 is a flowchart illustrating an example of a detection mode according to a modified example. [Figure 8] FIG. 10 is a schematic diagram of a cooking device according to a modified example. [Figure 9] FIG. 10 is a schematic diagram of a cooking device according to a second embodiment. [Figure 10] FIG. 10 is a block diagram of a cooking device according to a second embodiment. [Figure 11] 10 is an example of the change over time in the ambient temperature and the pan temperature in a cooking device. [Figure 12] 10 is a flowchart of a detection mode in the second embodiment. [Figure 13] FIG. 10 is a schematic diagram of a cooking device according to a third embodiment. [Figure 14] FIG. 10 is a block diagram of a cooking device according to a third embodiment. [Figure 15] 10 is a flowchart of a detection mode in the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, a cooking device 1 (see FIG. 1) according to one embodiment of the present disclosure will be described in detail with reference to the drawings. In the following description, components having substantially the same functions will be referred to by the same reference numerals, and the description thereof will be incorporated herein by reference.

[0010] In the present disclosure, the term "cooker" refers to a general appliance that heats and cooks ingredients, etc. A cooker generally has a main body with a cooking chamber and a heating mechanism that heats ingredients, etc. placed in the cooking chamber. The heating mechanism is not particularly limited as long as it is capable of heating ingredients, etc. The heating mechanism may, for example, be a mechanism that heats the entire cooking chamber to heat ingredients, etc. placed in the cooking chamber. The heating mechanism may, for example, be a mechanism that directly heats ingredients, etc. placed in the cooking chamber. Specifically, the heating mechanism may, for example, be a microwave generating mechanism that generates microwaves and irradiates the ingredients, etc. The heating mechanism may, for example, be composed of a resistance heating heater. A cooker may have multiple types of heating mechanisms, including, for example, a microwave generating mechanism that generates microwaves and a resistance heating heater. A cooker may, for example, be one that heats and cooks ingredients, etc. using microwaves. A cooker may, for example, be one that heats and cooks ingredients, etc. directly or indirectly using a resistance heating heater. The cooking device may heat ingredients and the like using radiant heat from a resistance heating heater and microwaves.

[0011] (First embodiment) Fig. 1 is a schematic perspective view of a cooking device 1 according to a first embodiment. Fig. 2 is a schematic perspective view of the cooking device 1 with the lid open.

[0012] 1 and 2 is specifically an automatic cooking pot. The cooking device 1 has a cooking device body 10 and a lid 20.

[0013] As shown in FIG. 2, cooker body 10 has cooking chamber 10a that opens upward. More specifically, cooker body 10 has pot 11 that constitutes cooking chamber 10a. Cooker body 10 is provided with heating mechanism 33 (see FIG. 3) that heats pot 11. Pot 11 is heated by heating mechanism 33. As a result, the temperature in cooking chamber 10a within pot 11 rises. In this embodiment, heating mechanism 33 is configured with an electric resistance heater. Pot 11 may or may not be detachable from cooker body 10.

[0014] Lid 20 is rotatably attached to cooker body 10. Cooker 1 is configured so that cooking chamber 10a can be opened and closed using lid 20. Specifically, lid 20 is rotatably attached to a portion of cooker body 10 located on one side of pot 11 in one direction, about a rotation axis that is perpendicular to the opening direction of pot 11. By rotating lid 20 about the rotation axis from the closed state shown in FIG. 1, lid 20 can be opened as shown in FIG. 2, thereby releasing cooking chamber 10a.

[0015] Lid 20 is provided with temperature sensor 31. Temperature sensor 31 is located in a space that communicates with the inside of cooking chamber 10a when lid 20 is closed. Therefore, temperature sensor 31 can measure the temperature inside cooking chamber 10a. Hereinafter, the temperature measured by temperature sensor 31 may be referred to as ambient temperature TA.

[0016] FIG. 3 is a block diagram of the cooking appliance 1. As shown in FIG. 3, the cooking appliance 1 has a control unit 32. The control unit 32 is a part that controls each mechanism of the cooking appliance 1. The control unit 32 may include, for example, a processor such as a CPU (Central Processing Unit) or an ASIC (Application Specific Integrated Circuit), and a storage device. The storage device stores, for example, data and computer programs. For example, the storage device temporarily stores data required for each process of the control unit 32 and stores setting data for each mechanism. The storage device may include a main storage device and an auxiliary storage device. The storage device may include, for example, a non-volatile memory, a hard disk drive, etc.

[0017] Specifically, the control unit 32 is connected to a temperature sensor 31, a heating mechanism 33, and an alarm unit 34. The control unit 32 acquires the temperature measured by the temperature sensor 31. The control unit 32 controls the heating mechanism 33 to set the ambient temperature TA to a desired temperature. The alarm unit 34 is a mechanism for notifying the user of the cooking appliance 1 of information, etc. The alarm unit 34 may be configured, for example, by a sound-generating mechanism or a display. A specific example of the sound-generating mechanism is a speaker, etc. The control unit 32 commands the alarm unit 34 to make the alarm unit 34 issue an alarm. The alarm may be, for example, a sound, a light, or a display.

[0018] The control unit 32 includes a detection unit 32a. The detection unit 32a is a part that detects whether the lid 20 is open or closed based on the ambient temperature TA (measured temperature) measured by the temperature sensor 31.

[0019] Fig. 4 shows an example of a change over time in the ambient temperature in the cooking appliance 1. Fig. 5 is a flowchart showing the start of the detection mode in the cooking appliance 1. Fig. 6 is an example of a flowchart of the detection mode in the first embodiment.

[0020] Next, with reference to FIGS. 4 to 6, detection of the lid 20 being in an open state while the cooking appliance 1 is in operation will be described. In the example shown in FIG. 4, cooking in the cooking appliance 1 begins at time t0. For example, at time t0, when a user operates the cooking appliance 1 or when the cooking time set by the user for the cooking appliance 1 is reached, the control unit 32 drives the heating mechanism 33 to start heating the pot 11. As a result, the ambient temperature TA in the cooking chamber 10a of the pot 11 begins to rise. In the example shown in FIG. 4, the control unit 32 controls the heating mechanism 33 so that the ambient temperature TA becomes a set temperature equal to or higher than temperature T1. In this example, the ambient temperature TA reaches temperature T1 at time t1. Cooking by the cooking appliance 1 is assumed to continue until time t2 or later. Therefore, unless the lid 20 is undesirably opened, the ambient temperature TA is assumed to be maintained at or higher than temperature T1 even at time t2 until the predetermined cooking end time.

[0021] When cooking in the cooking appliance 1 is started, the control unit 32 performs the control shown in FIG.

[0022] First, in step S1, the detection unit 32a included in the control unit 32 acquires the ambient temperature TA from the temperature sensor 31. The detection unit 32a determines whether the ambient temperature TA is equal to or higher than a predetermined temperature T1. If the detection unit 32a determines that the ambient temperature TA is lower than the predetermined temperature T1, the process returns to step S1.

[0023] If the detection unit 32a determines that the ambient temperature TA is equal to or higher than the predetermined temperature T1, the process proceeds to step S2. In step S2, the detection unit 32a starts a detection mode. This detection mode is a mode for detecting whether the lid 20 is open.

[0024] In the example shown in Fig. 4, the ambient temperature TA is below the predetermined temperature T1 from time t0 until time t1. Therefore, the detection mode is not started in step S2. When time t1 is reached, the ambient temperature TA becomes equal to or higher than the predetermined temperature T1. Therefore, after time t1, the detection mode shown in Fig. 6 is started.

[0025] As shown in FIG. 6, when the detection mode is started, the detection unit 32a first determines in step S21 whether the ambient temperature TA is equal to or higher than a predetermined temperature T2. Here, the predetermined temperature T2 is lower than the predetermined temperature T1. The predetermined temperature T2 is preferably lower than the predetermined temperature T1 by, for example, 5°C or more. The difference between the predetermined temperature T2 and the predetermined temperature T1 is preferably 50°C or less, and more preferably 30°C or less. If the detection unit 32a determines in step S21 that the ambient temperature TA is equal to or higher than the predetermined temperature T2, the process returns to step S21. If the ambient temperature TA is equal to or higher than the predetermined temperature T2, step S21 is repeated until the end of the cooking period.

[0026] In step S21, when it is determined that the ambient temperature TA is lower than the predetermined temperature T2, the process proceeds to step S22. Here, the predetermined temperature T2 is lower than the predetermined temperature T1, so that the ambient temperature TA being lower than the predetermined temperature T2 means that the ambient temperature TA has dropped by the predetermined temperature (T1-T2) or more.

[0027] In step S22, the detection unit 32a determines whether the current time is within the cooking period of the cooking appliance 1. If the detection unit 32a determines in step S22 that the current time is not within the cooking period, the detection mode ends. If the detection unit 32a determines in step S22 that the current time is within the cooking period, the process proceeds to step S23.

[0028] The process proceeds to step S23 when the ambient temperature TA drops by a predetermined temperature (T1-T2) or more and becomes less than the predetermined temperature T2, and the cooking period has not ended, i.e., the cooking period is still in progress. In such a case, it is assumed that cooking is taking place, which would not normally occur with lid 20 closed. Therefore, the process proceeds to step S23 when lid 20 is open.

[0029] In step S23, detection unit 32a detects that lid 20 has been opened and issues a command to notification unit 34 to notify that lid 20 has been opened. As a result, notification unit 34 issues a notification. For example, notification unit 34 notifies the user that lid 20 has been opened by making a sound or displaying a message that lid 20 has been opened. For example, notification unit 34 may issue a notification to a mobile terminal connected to cooking appliance 1 via short-range communication or the Internet.

[0030] Following step S23, step S24 is carried out. In step S24, the detection unit 32a stops the heating mechanism 33, and causes the cooking appliance 1 to end cooking.

[0031] As described above, in the cooking appliance 1, the opening and closing of the lid 20 can be detected based on the ambient temperature TA measured by the temperature sensor 31. Therefore, it is possible to preferably detect, for example, that the lid 20 has been opened during cooking while the heating mechanism 33 is operating.

[0032] For example, even if the lid 20 is opened when the ambient temperature TA is low, it is unlikely to have a significant effect on cooking. However, if the lid 20 is opened when the ambient temperature TA is high, it is likely to have a significant effect on cooking. By detecting the open / closed state of the lid 20 based on the ambient temperature TA as in this embodiment, it is possible to preferably detect that the lid 20 has been opened when the ambient temperature TA is high, which is likely to have a significant effect on cooking. Therefore, a decrease in the quality of cooking can be preferably prevented.

[0033] For example, if the user intentionally opens lid 20 for just a moment and then immediately closes it, it may not necessarily be necessary to issue an alert or stop cooking. In this embodiment, detection unit 32a detects that lid 20 has been opened when ambient temperature TA, which is the measured temperature, drops by a predetermined temperature or more during a cooking period that is within a predetermined period, specifically when ambient temperature TA falls below predetermined temperature T2 (step S21). Therefore, for example, if lid 20 is intentionally opened for just a moment by the user, cooking continues, preventing cooking from being undesirably stopped.

[0034] Other examples and modifications of the preferred embodiment of the present disclosure will be described below. In the following description, members having substantially the same functions as those in the first embodiment will be referred to by the same reference numerals, and description thereof will be omitted.

[0035] (First Modification) 7 is an example of a flowchart of the detection mode in this modification. In the first modification, the flow shown in FIG. 5 is referred to in common with the first embodiment.

[0036] In the first embodiment, an example was described in which opening of the lid 20 is detected when the ambient temperature TA falls below a predetermined temperature T2. In contrast, in the first modified example, opening of the lid 20 is detected based on the rate of decrease in the ambient temperature TA per unit time.

[0037] Specifically, as shown in Fig. 7, in the detection mode of the first modified example, the detection unit 32a first determines in step S25 whether the ambient temperature TA has dropped. Specifically, for example, in step S25, the detection unit 32a determines whether the current ambient temperature TA has dropped by a predetermined temperature (e.g., 5°C) compared to the ambient temperature TA a predetermined time ago (e.g., 10 seconds ago). If it is determined in step S25 that the ambient temperature TA has not dropped, the process returns to step S25. This step S25 is repeated until the end of the cooking period, similar to step S21 in the first embodiment.

[0038] If it is determined in step S25 that the ambient temperature TA has decreased, the process proceeds to step S26. In step S26, the detection unit 32a determines whether the rate of decrease of the ambient temperature TA per unit time (dT / dt) is equal to or greater than a predetermined rate of decrease X. Here, the rate of decrease of the ambient temperature TA per unit time may be, for example, the current slope of a graph of the ambient temperature TA obtained by Fourier transforming the ambient temperature TA measured by the temperature sensor 31 at predetermined intervals.

[0039] If it is determined in step S26 that the decrease rate dT / dt is less than the predetermined decrease rate X, the detection unit 32a determines that the lid 20 is not open, and the process returns to step S25.

[0040] In step S26, if the rate of decrease dT / dt is equal to or greater than the predetermined rate of decrease X, the ambient temperature TA is rapidly decreasing, so the detection unit 32a determines that the lid 20 is opened, and steps S22, S23, and S24 in the first embodiment are performed sequentially.

[0041] As in the first modification, the rate of change of the ambient temperature TA per unit time can also be used to preferably detect the opening and closing of the lid 20. Furthermore, if the user opens the lid 20 only momentarily and the ambient temperature TA does not drop significantly, the opening of the lid 20 is not detected, and undesired interruptions of cooking can be prevented.

[0042] (Second Modification) FIG. 8 is a schematic diagram of a cooking device according to a second modified example.

[0043] In the first embodiment, an example in which the temperature sensor 31 is provided on the lid 20 has been described. However, the present disclosure is not limited to this configuration. The temperature sensor 31 may be located in any position as long as it is capable of measuring the ambient temperature TA. For example, as shown in FIG. 8, the temperature sensor 31 may be located on the cooker body 10. In this case, it is preferable that the temperature sensor 31 be located on the cooker body 10 closer to the lid 20. Specifically, it is preferable that the temperature sensor 31 be located closer to the lid 20 than the center of the cooking chamber 10a in the direction in which the cooker body 10 and the lid 20 face each other. This is because the temperature sensor 31 can easily detect temperature changes when the lid 20 is opened.

[0044] (Second embodiment) Fig. 9 is a schematic diagram of a cooking device according to a second embodiment. Fig. 10 is a block diagram of the cooking device according to the second embodiment. As shown in Figs. 9 and 10, the cooking device according to the second embodiment differs from the cooking device 1 according to the first embodiment in that in addition to the temperature sensor 31, another temperature sensor 35 is provided.

[0045] Temperature sensor 35 is a temperature sensor that measures the temperature of pot 11 that constitutes cooking chamber 10a. Like temperature sensor 31, temperature sensor 35 is connected to control unit 32. Hereinafter, the temperature of pot 11 measured by temperature sensor 35 and output to control unit 32, more specifically, to detection unit 32a, may be referred to as pot temperature TB.

[0046] Temperature sensor 35 is positioned so as to be in contact with pot 11. Temperature sensor 35 is preferably positioned on the opposite side of lid 20 from the center of cooking chamber 10a in the direction in which lid 20 and cooker body 10 face each other. Temperature sensor 35 is preferably positioned so as to be in contact with the back side of the bottom wall of pot 11. When temperature sensor 35 is positioned in this way, even if lid 20 is opened during cooking, the temperature detected by temperature sensor 35 is less likely to drop due to low-temperature air flowing into cooking chamber 10a, and the temperature of pot 11 can be measured with high accuracy.

[0047] 11 shows an example of changes over time in the ambient temperature and pan temperature in the cooking device of Embodiment 2. An example of changes over time in the ambient temperature TA and pan temperature TB as shown in FIG.

[0048] When cooking begins at time t0, both ambient temperature TA and pan temperature TB rise. As heating mechanism 33 heats pan 11, pan temperature TB rises at a faster rate than ambient temperature TA. Even when the heating setting temperature is reached, pan temperature TB remains higher than ambient temperature TA.

[0049] Fig. 12 is a flowchart of the detection mode in the second embodiment. As shown in Fig. 12, in this embodiment, when ambient temperature TA becomes equal to or higher than predetermined temperature T1 and detection mode starts, first, in step S26, detection unit 32a acquires ambient temperature TA from temperature sensor 31 and pan temperature TB from temperature sensor 35, and determines whether the difference between pan temperature TB and ambient temperature TA (temperature difference ΔT) is equal to or higher than predetermined temperature difference ΔT1. If it is determined in step S26 that temperature difference ΔT is less than predetermined temperature difference ΔT1, the process returns to step S26. Step S26 is repeated until cooking is completed.

[0050] If it is determined in step S26 that the temperature difference ΔT is equal to or greater than the predetermined temperature difference ΔT1, steps S22, S23 and S24 are carried out in sequence, as in the first embodiment.

[0051] As shown in FIG. 11, the temperature difference ΔT does not change substantially until time t2 when cooking is being carried out with the lid 20 closed. When lid 20 is opened at time t2, ambient temperature TA drops more rapidly than pan temperature TB, increasing temperature difference ΔT. Therefore, as in this embodiment, it is possible to detect whether lid 20 is open or closed based on temperature difference ΔT.

[0052] When detecting whether lid 20 is open or closed based on temperature difference ΔT as in this embodiment, if pan temperature TB drops due to, for example, a malfunction or abnormality in heating mechanism 33, pan temperature TB drops and ambient temperature TA also drops accordingly, making it difficult for temperature difference ΔT to become large. This makes it possible to reduce false detections of whether lid 20 is open or closed due to a malfunction or abnormality in heating mechanism 33, making it easier to reliably detect whether lid 20 is open or closed.

[0053] The predetermined temperature difference ΔT1 can be set appropriately based on, for example, the maximum pan temperature TB or the maximum ambient temperature TA during the cooking process. For example, the predetermined temperature difference ΔT1 may be set to a temperature that is a predetermined multiple (e.g., 1.1 times or more) of the temperature difference ΔT when the pan temperature TB reaches its maximum during the cooking process.

[0054] (Third embodiment) Fig. 13 is a schematic diagram of a cooking device according to a third embodiment. Fig. 14 is a block diagram of a cooking device according to a third embodiment. Fig. 15 is a flowchart of a detection mode in the third embodiment.

[0055] The cooking appliance according to the third embodiment differs from the cooking appliance according to the second embodiment in that it includes a magnetic field generating mechanism 36 and a magnetic field detecting mechanism 37. One of the magnetic field generating mechanism 36 and the magnetic field detecting mechanism 37 is provided on one side of the cooking appliance body 10 and the lid 20, and the other is provided on the other side of the cooking appliance body 10 and the lid 20. Specifically, in this embodiment, the magnetic field generating mechanism 36 is provided on the lid 20, and the magnetic field detecting mechanism 37 is provided on the lid 20. The magnetic field generating mechanism 36 may be configured, for example, by an electromagnet or a permanent magnet. The magnetic field detecting mechanism 37 may be configured, for example, by a Hall sensor or a Hall IC. In this embodiment, as shown in FIG. 14 , the magnetic field detecting mechanism 37 configured by a Hall sensor is connected to the control unit 32.

[0056] The magnetic field generating mechanism 36 and the magnetic field detecting mechanism 37 are in close proximity when the lid 20 is closed. The magnetic field generating mechanism 36 and the magnetic field detecting mechanism 37 are arranged such that the magnetic field from the magnetic field generating mechanism 36 can be detected by the magnetic field detecting mechanism 37 when the lid 20 is closed, but the distance between the magnetic field generating mechanism 36 and the magnetic field detecting mechanism 37 increases when the lid 20 is opened, preventing the magnetic field from being detected by the magnetic field detecting mechanism 37. In the cooking device according to this embodiment, the detecting unit 32a detects whether the lid 20 is open or closed based on the ambient temperature TA and the like, as in the second and first embodiments, and also detects whether the lid 20 is open or closed based on the amount of magnetic field detected by the magnetic field detecting mechanism 37. Specifically, in this embodiment, the detecting unit 32a detects whether the lid 20 is open when a condition based on the measured temperatures, such as the ambient temperature TA detected by the temperature sensor 31 and the pan temperature TB detected by the temperature sensor 35, satisfies a predetermined condition, regardless of the magnitude of the magnetic field detected by the magnetic field detecting mechanism 37. Specifically, even if the amount of magnetism detected by magnetic detection mechanism 37 is large and it is determined that lid 20 is closed based on the amount of magnetism alone, detection unit 32a detects whether lid 20 is open or closed based on a condition based on the measured temperature. By detecting whether lid 20 is open or closed based on a condition based on the measured temperature as in this embodiment, it is possible to preferably detect whether lid 20 is open or closed even if a magnetic field exceeding a predetermined amount is detected due to a malfunction of magnetic detection mechanism 37, magnetic field generation mechanism 36, or the like.

[0057] 15, in this embodiment, when the ambient temperature TA reaches or exceeds a predetermined temperature T1 and the detection mode starts, first, in step S27, the detection unit 32a determines whether or not the magnetic detection mechanism 37 detects a magnetic field of a predetermined magnitude or greater. If it is determined in step S27 that the magnetic detection mechanism 37 does not detect a magnetic field of a predetermined magnitude or greater, it is determined from the result that the lid 20 is open, and steps S22, S23, and S24 are sequentially performed, as in the first embodiment.

[0058] If it is determined in step S27 that the magnetic detection mechanism 37 has detected a magnetic field of a predetermined magnitude or greater, step S21 is performed. In this case, the magnetic field detected is greater than the predetermined magnitude, which indicates that the lid 20 is closed or that the magnetic field generation mechanism 36 and the magnetic detection mechanism 37 are malfunctioning or have other abnormalities.

[0059] Step S21 is substantially the same as step S21 in the first embodiment, and therefore the description of the first embodiment is incorporated herein. If it is determined in step S21 that the ambient temperature TA is equal to or higher than the predetermined temperature T2, steps S22, S23, and S24 are sequentially performed. If it is determined in step S21 that the ambient temperature TA is lower than the predetermined temperature T2, the process returns to step S27. By performing steps S27 and S21, the opening and closing of the lid 20 can be suitably detected even if an abnormality occurs in the magnetic field generating mechanism 36 or the magnetic field detecting mechanism 37.

[0060] In the detection mode shown in FIG. 15, step S26 or the like may be performed instead of step S21.

[0061] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims. Furthermore, configurations obtained by combining the configurations of the different embodiments described in this specification are also included in the scope of the present invention. [Explanation of symbols]

[0062] 1:Heating cooker 10: Cooking appliance body 10a:Heating cooking chamber 11: Hotpot 20: Lid 31, 35: Temperature sensor 32: Control section 32a: Detection unit 33: Heating mechanism 34: Information Department 36: Magnetic generation mechanism 37: Magnetic detection mechanism

Claims

1. a cooking device body having a heating and cooking chamber that opens upward; a lid that can open and close the opening of the cooking chamber; a temperature sensor for measuring the temperature inside the cooking chamber; a detection unit that detects whether the lid is open or closed based on the temperature measured by the temperature sensor; A heating cooker comprising:

2. The cooking device according to claim 1 , wherein the detection unit detects that the lid has been opened when the measured temperature drops by a predetermined temperature or more within a predetermined period of time.

3. Further, another temperature sensor is provided to measure the temperature of the pot constituting the heating cooking chamber, The cooking device according to claim 1 , wherein the detection unit detects whether the lid is open or closed based on a difference between a temperature detected by the other temperature sensor and a temperature detected by the temperature sensor.

4. The cooking device according to claim 3 , wherein the other temperature sensor is provided so as to come into contact with a bottom wall of the pot.

5. a magnetic generating mechanism provided in one of the cooking appliance body and the lid; a magnetic detection mechanism provided on the other of the cooking appliance body and the lid, the magnetic detection mechanism being capable of detecting magnetism from the magnetic generation mechanism when the lid is closed; Furthermore, The cooking device according to claim 1 , wherein the detection unit detects whether the lid is open or closed based on the measured temperature and the amount of magnetism detected by the magnetic detection mechanism.

6. The cooking device according to claim 5 , wherein the detection unit detects that the lid is opened when a condition based on the measured temperature satisfies a predetermined condition, regardless of the magnitude of the detected magnetic quantity.

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