Heating cooker

Abstract

Provided is a cooking heater capable of reducing the temperature of a pot after the drying course to suppress the risk of burns. 【Solution means】In the rice cooker of the present invention, it includes a pot 4 for containing rice and water, a heating coil 11 for heating the pot 4, a pot sensor 12 for detecting the temperature of the pot 4, and a time measuring means 45 for measuring time. It has a drying course for drying the inside of the pot 4. In the drying course, based on the detected temperature from the pot sensor 12 and the time measured by the time measuring means 45, the pot 4 is heated by the heating coil 11 to maintain the first pot temperature α higher than the boiling temperature of water for the time T1 of the first drying process. The first drying process and the second drying process of heating the pot 4 by the heating coil 11 to maintain it at the second pot temperature γ lower than the first pot temperature α are sequentially performed based on the detected temperature from the pot sensor 12.

Description

Technical Field

[0001] The present invention relates to a cooking appliance capable of implementing a drying course for drying the inside of a pot.

Background Art

[0002] Conventionally, for example, in Patent Document 1, in a rice cooker as a cooking appliance, a heating means (12) heats an inner pot (3), and a lid heating means (10) heats an inner lid (4), so that both the inner pot (3) and the inner lid (4) are heated to implement a drying course for drying these members. Here, at the end of the drying course, the temperature of the inner pot (3) and the temperature of the inner lid (4) are maintained at a first predetermined temperature T1 which is 100°C, the evaporation temperature of water.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Generally, at the end of cooking such as after cooking rice, when the outer lid is opened, it can be visually understood that the inner pot is hot by seeing steam or the like generated from the inside of the inner pot. Also, for example, when using tools such as a rice paddle or a ball to move the food in the inner pot, the user does not accidentally touch the inner pot after the cooking is finished. However, at the end of the drying course, since there is no heated object such as moisture in the inner pot, no steam or the like is generated and the temperature of the inner pot cannot be visually recognized. In the case of a cooking appliance such as a rice cooker that is used for cooking such as cooking rice immediately after drying, there is a risk of accidentally touching it because the temperature of the inner pot cannot be seen at this time. In the rice cooker of Patent Document 1, since the temperature of the inner pot (3) and the temperature of the inner lid (4) are the first predetermined temperature T1, there was a risk of accidentally touching and getting burned.

[0005] Therefore, in view of the above circumstances, an object of the present invention is to provide a cooking heater capable of reducing the temperature of the pot at the end of the drying course and suppressing the risk of burns.

Means for Solving the Problems

[0006] In the cooking heater of the present invention, there are a pot for accommodating an object to be cooked, pot heating means for heating the pot, pot temperature detection means for detecting the temperature of the pot, It has an elastic member for sealing with the pot, an inner lid that covers the opening of the pot, lid heating means for heating the inner lid, and lid temperature detection means for detecting the temperature of the inner lid , and has a drying course for drying the inside of the pot. The drying course has a first drying step and a second drying step. In the first drying step, a first pot temperature higher than the boiling temperature of water as the target temperature, heating the pot by the pot heating means together with, using a first lid temperature lower than the first pot temperature as the target temperature, the inner lid is heated by the lid heating means. In the second drying step, a second pot temperature lower than the first pot temperature as the target temperature, heating the pot by the pot heating means together with, using a second lid temperature lower than the first pot temperature as the target temperature, characterized in that the inner lid is heated by the lid heating means.

Effects of the Invention

[0007] According to the present invention, the risk of burns can be suppressed.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Embodiments for Carrying Out the Invention

[0009] Hereinafter, preferred embodiments of the rice cooker according to the present invention will be described with reference to the accompanying drawings. In all these drawings, common parts will be given common reference numerals.

[0010] Figs. 1 to 11 show an embodiment in which the present invention is applied to a rice cooker. First, the configuration of the entire rice cooker will be described based on Figs. 1 and 2. 1 is the main body, which has a substantially rectangular shape with the front and rear, left and right sides facing each other when viewed from above, and the upper surface is open. 2 is a lid that opens and closes the upper surface opening of the main body 1. Similar to the main body 1, it has a substantially rectangular shape with the front and rear, left and right sides facing each other when viewed from above, and the upper surface is configured to be substantially flat. The main body 1 has a pot housing portion 3 with an open upper surface. When the lid 2 is opened, a bottomed pot 4, which is a container for containing water and rice as the object to be cooked, is detachably accommodated in the pot housing portion 3. The pot housing portion 3 is configured by combining a bowl-shaped resin inner frame 5, etc., and is formed in an overall bottomed cylindrical shape.

[0011] The pot 4 uses aluminum with good thermal conductivity as the main material 7, and a heating element 8 made of a magnetic metal plate such as ferritic stainless steel is joined from the lower side part to the bottom of the outer surface of the main material 7. Further, on the outer surface of the inner frame 5 facing the bottom surface from the lower part of the side surface of the pot 4, a heating coil 11 is provided as heating means for electromagnetic induction heating of the heating element 8 of the pot 4. When a high-frequency current is supplied to the heating coil 11, the heating element 8 of the pot 4 generates heat due to the alternating magnetic field generated from the heating coil 11, and the configuration is such that the object to be cooked in the pot 4 is heated during rice cooking and during heat preservation. Also, at the center of the bottom of the inner frame 5, a pot sensor 12 as pot temperature detection means is arranged so as to elastically contact the bottom of the outer surface of the pot 4.

[0012] A hinge 13 serving as a connecting portion with the main body 1 is provided at the rear part of the lid body 2. Further, on the front upper surface of the lid body 2, a lid body operating body 14 is disposed in an exposed state. When this lid body operating body 14 is pushed, the engagement between the main body 1 and the lid body 2 is released, and the lid body 2 opens with the hinge axis of the hinge 13 as the rotation center by a hinge spring 10 provided at the upper rear of the main body 1.

[0013] On the rear upper surface of the lid body 2, a steam port 15 for discharging steam generated from the object to be cooked in the pot 4 to the outside of the rice cooker is arranged. Further, on the upper surface of the lid body 2, in addition to this steam port 15 and the lid body operating body 14, an LCD (Liquid Crystal Display) 16 as a screen display portion and an LED (Light Emitting Diode) display portion 17 as a status display portion for displaying various information related to rice cooking, etc. A display means 18 composed of such elements and an operation means 19 composed of a touch sensor and arranged above the LCD 16 for starting rice cooking or selecting time, rice cooking course, etc. are respectively arranged. Also, below the display means 18 and the operation means 19, a control PC (Printed Circuit) board 21 provided with a display / operation control means 51 (see FIG. 4) for performing control related to operation and display is arranged.

[0014] The LED display unit 17 displays the state of the actual rice cooker. In this embodiment, when a reservation setting is made, the "reservation" LED display unit lights up. When the rice cooker enters the warming state, the "warming" process LED display unit lights up. When the pressure inside the pot 4 becomes lower than atmospheric pressure due to the decompression means 38 described later, the "vacuum" process LED display unit lights up. When the pressure starts to be applied inside the pot 4 during rice cooking and the pressure inside the pot 4 is pressurized until the rice is cooked, the "pressure" process LED display unit is configured to light up. Therefore, even in the dimming state where the backlight of the LCD 16 is dimmed, the user can understand the current state of the rice cooker at a glance by checking the LED display unit 17. Here, the colors of the lights when each LED display unit of the LED display unit 17 lights up may be made different from each other, so that the user can understand at a glance what state the rice cooker is in currently. In this embodiment, the LED display unit 17 is arranged immediately in front of the LCD 16, but it may also be arranged at a position away from the LCD 16. Alternatively, the configuration excluding the LED display unit 17 may be adopted, and the display content of this LED display unit 17 may be displayed on the LCD 16.

[0015] The operation means 19 composed of touch sensors is, for example, a component in which a plurality of touch keys are arranged, each of which is formed by connecting a transparent electrode portion made of a conductive polymer and a contact portion connected to the control PC board 21 with a pattern wiring. By performing a touch operation on any of the plurality of button display portions displayed on the LCD 16, the touch key arranged above the button display portion and corresponding to the button display portion is touched, and the button display portion is selected.

[0016] In consideration of the operability and safety of the user in this way, the lid operation body 14 is arranged at the front of the upper surface, which is closer to the user in the rice cooker, and the steam port 15 is arranged at the rear of the upper surface, which is farther from the user in the rice cooker. By doing so, a large space can be secured between the lid operation body 14 and the steam port 15 on the upper surface of the lid body 2 for providing the display means 18. Since the display means 18 and the operation means 19 arranged above it can be provided in a large size, the visibility of the display means 18 and the operability of the operation means 19 can be improved. Further, on the upper surface of the lid body 2, except for the operation means 19 above the LCD 16, there are no operation means such as physical keys and buttons, such as a rice cooking key and a power-off key, which were provided in conventional rice cookers. Since the operation of the rice cooker is performed only by the operation means 19, the trouble of searching for buttons during operation can be saved, and the operability can be improved. Also, a very smart appearance can be achieved, and the space where the display means 18 and the operation means 19, which are precision parts, are arranged can be made compact. Further, by removing physical keys and buttons, etc., the upper surface of the lid body 2 can be configured in a substantially flat shape, making it easy to wipe and clean, and improving the cleanability.

[0017] Below the lid body 2, an inner lid assembly 23 as a lower member of the lid body 2 is disposed. The inner lid assembly 23 is made of a metal material having a disk shape with substantially the same diameter as the upper opening of the pot 4, and includes an inner lid 24 that covers the upper opening of the pot 4, a lid packing 25 as an elastic member provided on the entire outer circumference of the inner lid 24 to seal the space between the inner lid 24 and the pot 4, and a pressure regulating portion 26 that adjusts the internal pressure of the pot 4. As shown in FIG. 2, the annularly formed lid packing 25 abuts on the upper surface, which is the opening of the pot 4, when the lid is closed with the lid body 2 closed, closes the gap between the pot 4 and the inner lid 24, and seals the steam generated from the pot 4.

[0018] Inside the lid body 2, in order to detect the opening and closing of the lid body 2, lid opening / closing detection means 27 is provided near the hinge 13. Here, the lid opening / closing detection means 27 may be of any detection method such as optical, mechanical, magnetic, etc., as long as it can output a detection signal corresponding to the opening and closing of the lid body 2. Also, inside the lid body 2, a lid heater 31 as lid heating means for heating the inner lid 24 and a thermistor-type lid temperature sensor 32 for controlling the temperature of the inner lid 24 by this lid heater 31 are respectively provided. And inside the lid body 2, a steam discharge path 33 that communicates the steam port 15 and the pressure regulating part 26 is formed as a path for discharging the steam generated in the pot 4 to the outside.

[0019] A pressure regulating valve 34 for opening and closing the steam discharge path 33 between the inside of the pot 4 and the steam port 15 is provided in the pressure regulating part 26. The pressure regulating valve 34 is spherical and interlocks with a solenoid 35 provided inside the lid body 2. When discharging the steam in the pot 4 to the outside, it opens the steam discharge path 33, and when pressurizing or depressurizing the inside of the pot 4, the solenoid 35 rolls the pressure regulating valve 34 so as to block the steam discharge path 33. And during pressurization, the cooked rice in the pot 4 is heated by applying high-frequency current to the heating coil 11, the cooked rice boils and generates steam, and when the internal pressure of the pot 4 reaches a predetermined value as this steam fills the pot 4, it opens the steam discharge path 33 against the self-weight of the pressure regulating valve 34, so that the pressure inside the pot 4 is maintained above atmospheric pressure.

[0020] 38 is a pressure reducing means for reducing the inside of the pot 4 to a pressure lower than the normal atmospheric pressure when the lid body 2 is closed on the main body 1. The pressure reducing means 38 accommodates the pot 4 in the pot housing 3, and after closing the lid body 2, energizes the solenoid 35 to lower the internal pressure of the sealed pot 4 with the pressure regulating valve 34 closing the steam discharge path 33. Also, when the pressure inside the pot 4 drops by a certain value from the atmospheric pressure, the operation of the pressure reducing pump 39 which is the operation source of the pressure reducing means 38 is stopped, and the inside of the pot 4 is kept in a decompressed state. Further, when returning the inside of the pot 4 from the decompressed state to the same pressure as the outside air, the operation of the pressure reducing pump 39 is stopped, and a path (not shown) communicating between the pressure reducing pump 39 and the inside of the pot 4 is opened. That is, the pressure reducing means 38 also serves as a pressure return means for returning the inside of the pot 4 from the decompressed state to the same pressure as the outside air.

[0021] In addition, inside the main body 1, a unitized heating board assembly 42 including heating control means 41 is disposed. The heating control means 41 includes a control IC 43 constituting a microcomputer, storage means 44 such as a memory capable of reading and writing various information and data (see FIG. 4), and timing means 45 such as a timer capable of measuring the time related to cooking rice (see FIG. 4) for electrically controlling each part of the rice cooker. In particular, the heating control means 41 is configured to mainly control the heating coil 11 based on the detected temperature of the pot sensor 12 to manage the temperature of the bottom of the pot 4, and mainly control the lid heater 31 based on the detected temperature of the lid temperature sensor 32 to manage the temperature of the inner lid 24 facing the object to be cooked.

[0022] FIG. 3 shows the electrical configuration of the rice cooker in the present embodiment. In the figure, the heating control means 41 equipped in the main body 2 includes a control IC 43 constituting a microcomputer, storage means 44, and timing means 45 for measuring time. It receives each temperature detection signal from the pot sensor 12 and the lid temperature sensor 32, the detection signal from the lid opening / closing detection means 27, and the control signal from the display / operation control means 51 described later, and controls the heating coil 11 and the lid heater 31 respectively during rice cooking, heat preservation, and maintenance, and also controls the solenoid 35 for moving the pressure regulating valve 34 described above and the operation of the pressure reducing pump 39 of the pressure reducing means 38 respectively.

[0023] The heating control means 41 includes, as functions in the control sequence of the program read from the storage means 53, a rice cooking control means 47, a warming control means 48, and a maintenance control means 49 in the control IC 43. The rice cooking control means 47, upon receiving an instruction to start rice cooking from the operation means 19, executes in sequence each of the steps including a soaking step to promote the absorption of water by the rice put into the pot 4, a boiling heating step to raise the temperature of the object to be cooked to boiling in a short time, a boiling continuation step to continue the boiling state of the object to be cooked, and a mashing step to maintain the temperature at a high level so as not to burn the rice, and performs rice cooking control to heat the object to be cooked inside the pot 4 with a desired pressure for rice cooking. The warming control means 48 controls to keep the rice inside the pot 4 at a predetermined warming temperature. The maintenance control means 49 controls to perform boiling cleaning of the inside of the pot 4, the surface of the inner lid 24 and the pot 4 side of the lid packing 25, and the inside of the steam discharge path 33, or controls to dry these locations.

[0024] On the other hand, the display / operation control means 51 includes a control IC 52, a storage means 53, a timing means (not shown), etc. that constitute a microcomputer, receives an operation signal from the operation means 19 and a control signal from the heating control means 41, controls the display operation of the display means 18 and the notification operation of a notification means 54 such as a buzzer that notifies by sound at the start or end of the operation of the rice cooker, and also transmits a control signal to the heating control means 41. This display / operation control means 51 includes, as functions in the control sequence of the program stored in the storage means 53, a display control means 55 and a condition setting means 56 in the control IC 52. The display control means 55 generates various control signals based on the operation signal from the operation means 19, and controls the display operation of the display means 18 and the notification operation of the notification means 54. The condition setting means 56, in cooperation with the display control means 55, enables the selection and setting of conditions that can be selected by the operation means 19, for example, the selection and setting of a desired rice cooking course from among rice cooking courses having selections and settings such as multiple types of rice, cooking methods, firmness, and water hardness settings.

[0025] The memory means 44 stores, for example, rice cooking courses corresponding to respective rice settings, cooking method settings, firmness settings, etc., boiling cleaning courses corresponding to boiling cleaning settings, and drying courses. For these rice cooking courses, the display control means 55 controls the display means 18 to selectively display the rice settings, cooking method settings, firmness settings, etc. of the rice cooking courses stored in the memory means 44, and the selection and setting of these cooking courses are performed by selecting them with the operation means 19 and thus performing these settings. Also, for these boiling cleaning courses, the display control means 55 controls the display means 18 to selectively display the setting of the boiling cleaning time stored in the memory means 44, and the selection and setting of these boiling cleaning courses are performed by selecting them with the operation means 19 and thus performing these settings. Further, the memory means 44 stores a plurality of heating patterns which are patterns of driving the heating coil 11, the lid heater 31, the pressure regulating valve 34, and the decompression means 38, such as at what timings and outputs to drive them, and the rice cooking control means 47, the heat preservation control means 48, and the maintenance control means 49 control the heating coil 11, the lid heater 31, the pressure regulating valve 34, and the decompression means 38 according to these heating patterns and energization patterns.

[0026] FIG. 4 shows a top view of the LCD 16, and the upper side of each drawing will be described as "front", the lower side as "rear", the left side as "left", and the right side as "right". Also, the front side of each drawing will be described as "upper" and the back side as "lower". This figure shows the top screen G1. When the user plugs in the power plug provided in the main body 1 in advance into a household outlet, power necessary for each part of the rice cooker is supplied. At this time, the display control means 55 causes the LCD 16 to display the layout of the top screen G1 as shown in FIG. 4 as the initial screen for regular use displayed on the LCD 16 after a predetermined time has elapsed or at the display of a predetermined startup display screen.

[0027] Referring to FIG. 4 to describe the top screen G1, a menu key display area A1 is formed at the front part thereof, where four button display parts B1 to B7 are arranged side by side left and right. Here, the button display part B1 of "Rice & Cooking" includes a text display body D1 of "Rice & Cooking" and a text display body D2 of "▼". Also, the button display part B3 of "Cooking Method" includes a text display body D3 of "Cooking Method" and a text display body D4 of "▼". And the button display part B5 of "Texture" includes a text display body D5 of "Texture" and a text display body D6 of "▼". Also, the button display part B7 of "Warm Keeping" includes a text display body D7 of "Warm Keeping" and a text display body D8 of "▼".

[0028] Also, behind the menu key display area A1, a rice cooking information display area A2 is formed, where four setting display bodies D11 to D14 are arranged side by side left and right. Here, the setting display body D11 of "Rice & Cooking" displays the set rice information or cooking information, and is arranged behind the button display part B1 of "Rice", and in FIG. 4, "White Rice Brand Selection" is displayed. Also, the setting display body D12 of "Cooking Method" displays the set cooking method information, and is arranged behind the button display part B3 of "Cooking Method", and in FIG. 4, "Master Cooking" is displayed. And the setting display body D13 of "Texture" displays the set texture information, such as hard or soft, and is arranged behind the button display part B5 of "Texture", and in FIG. 4, "Normal" is displayed. Also, the setting display body D14 of "Warm Keeping" displays the set warm keeping information, and is arranged behind the button display part B7 of "Warm Keeping", and in FIG. 4, "Standard" is displayed.

[0029] And behind the rice cooking information display area A2, a button display part B15 including a text display body D15 of "HITASHI+" and a button display part B16 including a text display body D16 of "Maintenance" are arranged side by side in the front and back. Also, on the right side of the button display part B15 of "HITASHI+" and the button display part B16 of "Maintenance", a text display body D17 of "Rice Cooking Time" which makes people associate the numbers displayed on the clock display body D16 with the rice cooking time, the required time for rice cooking, the remaining time which is the time until the actual rice cooking is completed, the cooking completion time which is the predicted time of rice cooking completion, etc. are displayed. In FIG. 4, a clock display body D18 which displays "About 38 minutes" which is the required time for rice cooking calculated from the setting of the rice cooking information display area A2, and a button display part B19 including a text display body D19 of "Rice Cooking Start" are arranged side by side on the left and right.

[0030] Also, at the rear part of the top screen G1, a setting button display part B20 including a text display body D20 which makes people associate with a picture of a gear, a button display part B21 including a text display body D21 of "Keep Warm", a button display part B22 including a text display body D22 of "Reservation", a time display body D23 which displays the current time, and a button display part B24 including a text display body D24 of "Turn Off" are arranged side by side on the left and right.

[0031] The "Stop" button display section B24 is operated when stopping rice cooking or keeping warm. When the "Stop" button display section B24 is touched, the display control means 55 receives an operation signal from the operation means 19 disposed above the "Stop" button display section B24 and transmits it to the heating control means 41. The rice cooking control means 47 performs control to stop heating the rice to be cooked in the pot 4 or cancel the reserved rice cooking and set it to the stop state. The display control means 55 controls the display means 18 to display the top screen G1 with the display in the rice cooking information display area A2 set to the settings at the most recent rice cooking, that is, the settings stored in the storage means 53. When the "Stop" button display section B24 is touched on the top screen G1, the display control means 55 discards the settings of the rice, cooking method, hardness adjustment, and water hardness that were set before rice cooking and are currently displayed in the rice cooking information display area A2, and controls the display means 18 to display the display in the rice cooking information display area A2 with the settings at the most recent rice cooking, that is, the settings stored in the storage means 53.

[0032] The "Start Rice Cooking" button display section B19 is operated when starting rice cooking. When the "Start Rice Cooking" button display section B19 is touched, the condition setting means 56 stores the settings of the rice and cooking, cooking method, texture, and keeping warm currently displayed in the rice cooking information display area A2 as the settings for this rice cooking course in the storage means 53. The rice cooking control means 47 controls the start of rice cooking for the rice to be cooked in the main body 1 according to the settings of this rice cooking course stored in the storage means 44. The heat preservation control means 48 is configured to control the heat preservation operation for the cooked rice in the main body 1 after the rice cooking process according to the settings of this rice cooking course.

[0033] The "Keep Warm" button display section B19 is operated when performing heat preservation. When the "Keep Warm" button display section B19 is touched, the heat preservation control means 48 is configured to transmit appropriate control signals to the heating coil 11 and the lid heater 31 to start heat preservation reheating for the rice to be cooked in the main body 1.

[0034] The button display section B1 for "Rice - Cooking" is operated to select the type and brand of rice as the item to be cooked and the cooking method such as congee. When the button display section B1 for "Rice - Cooking" is touched, the display control means 55 controls the display means 18 to display a rice - cooking selection screen (not shown). When the type, brand of rice, or cooking method is selected on this rice - cooking selection screen, the display control means 55 returns to the top screen G1 and controls the display means 18 to display the selected type, brand of rice, or cooking method on the text display body D11.

[0035] The button display section B3 for "Cooking Method" is operated to select the type of cooking method for the item to be cooked. When the button display section B3 for "Cooking Method" is touched, the display control means 55 controls the display means 18 to display a cooking - method selection screen (not shown). When the cooking method for the item to be cooked is selected on this cooking - method selection screen, the display control means 55 returns to the top screen G1 and controls the display means 18 to display the selected cooking method for the item to be cooked on the text display body D12.

[0036] The button display section B5 for "Texture" is operated to select the type of texture of the cooked rice as the item to be cooked. When the button display section B5 for "Texture" is touched, the display control means 55 controls the display means 18 to display a texture selection screen (not shown). When the texture of the cooked rice is selected on this texture selection screen, the display control means 55 returns to the top screen G1 and controls the display means 18 to display the selected texture of the cooked rice on the text display body D13.

[0037] The button display section B7 for "Warm - keeping" is operated to set the warm - keeping operation in the warm - keeping process carried out after the rice - cooking process. When the button display section B7 for "Warm - keeping" is touched, the display control means 55 controls the display means 18 to display a warm - keeping selection screen (not shown). When the warm - keeping operation is set on this warm - keeping selection screen, the display control means 55 returns to the top screen G1 and controls the display means 18 to display the current setting of the warm - keeping operation on the text display body D14.

[0038] The button display section B15 of "HITASHI+" is operated when extending in advance the time of the HITASHI cooking process in the rice cooking process. When the button display section B15 of "HITASHI+" is touched, the display control means 55 controls the display means 18 to display a HITASHI cooking extension time selection screen (not shown). When an extension time is selected on this HITASHI cooking extension time selection screen, the display control means 55 returns to the top screen G1 and controls the display means 18 to display, in the text display body D15, a display with the extension time selected for "HITASHI+" added, for example, if the selected extension time is 30 minutes, a display such as "HITASHI + 30 minutes".

[0039] The setting button display section B20 is operated to set the rice cooker. When the setting button display section B20 is touched, the display control means 55 controls the display means 18 to display a setting screen (not shown). Note that on the setting screen, it may be configured so that the presence or absence of notification by the notification means 54 and the size of the notification sound can be set, or it may be configured so that the presence or absence of notification can be set for each of the start / end of the operation of the rice cooker.

[0040] The button display section B22 of "RESERVATION" is operated when performing reservation rice cooking. When the button display section B22 of "RESERVATION" is touched, the display control means 55 controls the display means 18 to display a reservation setting screen (not shown). When a reservation is set on this reservation setting screen and reservation rice cooking is started, the rice cooking control means 47 starts the rice cooking so that the rice to be cooked in the main body 1 is cooked at the set reservation time, and also controls to start the warming by the warming control means 48.

[0041] The button display section B16 of "MAINTENANCE" is operated when performing boiling cleaning or drying of the rice cooker. When the button display section B16 of "MAINTENANCE" is touched, the display control means 55 controls the display means 18 to display a maintenance selection screen G2 as shown in FIG. 5.

[0042] Figure 5 shows a maintenance selection screen G2 that appears when the button display section B16 for "Cleaning" is touched on the top screen G1. Referring to this figure, the maintenance selection screen G2 will be described. At the front of the screen, a text display body D31 reading "Please select cleaning" is arranged. Behind the text display body D31, a maintenance selection display area A3 is formed, where two button display sections B32 and B34 are arranged side by side, left and right. Here, the button display section B32 for "Boiling Cleaning" includes a text display body D32 reading "Boiling Cleaning" and an image display body D33 showing a photo of boiling water in the pot 4. Also, the button display section B34 for "Drying Course" includes a text display body D34 reading "Drying Course" and an image display body D35 showing a photo of the pot 4 and the inner lid assembly 23. Further, at the rear of the maintenance selection screen G2, a button display section B36 including a text display body D36 reading "Back" and a button display section B37 including a text display body D37 reading "Cancel" are arranged side by side, left and right.

[0043] The button display section B32 for "Boiling Cleaning" and the button display section B34 for "Drying Course" are operated to select the type of maintenance. When the button display section B32 for "Boiling Cleaning" is touched, the display control means 55 controls the display means 18 to display a boiling cleaning setting screen G3 as shown in Figure 6. When the button display section B34 for "Drying Course" is touched, the display control means 55 controls the display means 18 to display a drying course screen G3 as shown in Figure 8.

[0044] The button display section B36 for "Back" is operated to discard the settings on the current screen, for example, the maintenance selection screen G2, and return to the previous screen, for example, the top screen G1. When the button display section B36 for "Back" is touched, the display control means 55 discards the settings currently displayed on the LCD 16 and returns to the previous screen, for example, the top screen G1, and controls the display means 18 to display the settings shown on that previous screen.

[0045] The "Cancel" button display section B37 is operated when discarding the settings on the current screen, for example, the maintenance selection screen G2, and returning to the top screen G1. When the "Cancel" button display section B37 is touched, the display control means 55 discards the settings currently displayed on the LCD 25, returns to the top screen G1, and controls the display means 18 to display the settings displayed on the most immediately previous top screen G1.

[0046] Figure 6 shows a boiling cleaning setting screen G3 that is shifted to when the "Boiling Cleaning" button display section B32 on the maintenance selection screen G2 is touched. Referring to this figure to explain the boiling cleaning setting screen G3, a text display body D41 with the text "About cleaning [Boiling Cleaning]" is arranged at the front part thereof. Behind the text display body D41, an explanatory text display body D42 with the text "(1) Pour water up to the water level scale 2 of 'White Rice' and close the lid" and an explanatory text display body D43 with the text "(2) Select the boiling time and touch Start" are arranged side by side in the front and back. And behind the explanatory text display body D43, a boiling time selection display area A4 is formed where three button display sections B44 to B46 are arranged side by side from left to right. Here, the "10-minute Start" button display section B44 includes a text display body D44 with the text "10-minute Start For light stains". Also, the "30-minute Start" button display section B45 includes a text display body D45 with the text "30-minute Start Recommended". And the "60-minute Start" button display section B46 includes a text display body D46 with the text "60-minute Start When concerned about the smell". Also, at the rear part of the maintenance selection screen G2, a "Return" button display section B36, a time display body D23, and a "Cancel" button display section B37 are arranged side by side from left to right. By displaying the current time on the time display body D23, it can be used as a reference for setting the boiling time.

[0047] The button display parts B44 to B46 are operated to select the boiling cleaning time and start the boiling cleaning. When the button display parts B44 to B46, for example, the button display part B45 of "Start for 30 minutes", are touched, the maintenance control means 49 performs a boiling cleaning operation for a time set according to the heating pattern of the current boiling cleaning setting, for example, for 30 minutes.

[0048] Figure 7 shows a drying course confirmation screen G4 that appears when the button display part B34 of "Drying Course" is touched on the maintenance selection screen G2. Referring to this figure, the description of the drying course confirmation screen G4 is as follows. At the front part thereof, a text display body D51 of "Regarding cleaning [Drying Course]" is arranged. Behind the text display body D51, an explanatory text display body D52 of "This is a course for drying the inner pot and the inner lid after hand washing with the rice cooker" and a pre-drying confirmation text display body D53 of "Please set the inner pot and the inner lid" are arranged side by side in the front and back.

[0049] Also, behind the pre-drying confirmation text display body D53, a clock display body D18 that displays the drying time and in Figure 7, "About 30 minutes" is displayed, and a button display part B54 including a text display body D54 of "Drying Start" are displayed side by side on the left and right.

[0050] And at the rear part of the drying course confirmation screen G4, a button display part B36 of "Return", a time display body D23, and a button display part B37 of "Cancel" are arranged side by side on the left and right. By displaying the current time on the time display body D23, it can be used as a reference for the end time of the drying time.

[0051] The button display part B54 of "Dry Start" is operated to start the drying course. When the button display part B54 of "Dry Start" is touched, the setting of the drying course is transmitted from the display and operation control means 51 to the heating control means 41. Then, the maintenance control means 49 of the heating control means 41 controls the heating coil 11 and the lid heater 31 so as to perform the heating operation of the drying course along the heating pattern of the drying course setting stored in the storage means 44.

[0052] Next, the operation in the boiling cleaning operation of the rice cooker with the above configuration will be described. First, water is put into the pot 4 as described in the description text display body D42. After setting this pot 4 in the pot housing part 3, the lid body 2 is closed. Before and after that, by the operation means 19, the button display part B16 of "Maintenance" is touched on the top screen G1, and the button display part B32 of "Boiling Cleaning" is touched on the maintenance selection screen G2 to shift to the boiling cleaning setting screen G3.

[0053] Then, when the button display parts B44 to B46, for example, the button display part B45 of "30 Minutes Start" are touched on the boiling cleaning setting screen G3 by the operation means 19, the setting of this boiling cleaning is transmitted from the display and operation control means 51 to the heating control means 41, and the maintenance control means 49 performs the boiling cleaning operation for the set time, for example, 30 minutes, along the heating pattern of the current boiling cleaning setting.

[0054] When the boiling cleaning operation is started, the maintenance control means 49 controls the solenoid 35 to roll the pressure regulating valve 34 so as to open the steam discharge path 33, and puts the inside of the pot 4 in a state of communicating with the outside of the main body 1. Also, the maintenance control means 49 controls the heating coil 11 so as to strongly heat the water in the pot 4 and raise it to the boiling temperature in a short time by heating until boiling is detected. Then, the display control means 55 controls the display means 18 to display a boiling cleaning execution screen G5 as shown in FIG. 8.

[0055] Referring to the figure and explaining the boiling cleaning execution screen G5, at the front part thereof, a caution text display body D61 saying "During Heating" and a text display body D62 saying "Performing Boiling Cleaning" are displayed side by side left and right. Further, behind the caution text display body D61 of "During Heating" and the text display body D62 of "Performing Boiling Cleaning", a text display body D63 of "Remaining" which makes one associate that the number displayed on the clock display body D16 is the remaining time until the boiling cleaning ends, and a clock display body D18 which displays the remaining time until the boiling cleaning ends and in FIG. 7, "About 30 minutes" which is the set time of the boiling cleaning is displayed, are displayed side by side left and right. Also, at the rear part of the top screen G1, a time display body D23 and a button display part B24 of "Stop" are arranged side by side left and right. By displaying the current time on the time display body D23, it can be used as a reference for the boiling cleaning end time, and by the button display part B24 of "Stop", the boiling cleaning can be ended at any time.

[0056] Thereafter, when the maintenance control means 49 receives a temperature detection signal from the pot sensor 12 that the temperature of the pot 4 has reached a predetermined temperature or higher, for example, 90°C or higher, it starts the control of detecting boiling. While the maintenance control means 49 continues to perform the control of continuously energizing the heating coil 11 to strongly heat the water inside the pot 4, it calculates the inclination of the detected temperature as to how much the detected temperature of the pot sensor 12 rises in a predetermined time. Specifically, when the maintenance control means 49 calculates that the temperature rise at the bottom of the pot 4 from the detected temperature of the pot sensor 12 is, for example, 3°C or less in 120 seconds, that is, below a predetermined temperature rise rate, it determines that boiling has been detected due to the change in the temperature rise rate of the pot 4. Also, the maintenance control means 49 takes in the temperature detection signal from the pot sensor 12, and when the detected temperature at the bottom of the pot 4 reaches 100°C which is the predetermined temperature, it determines that the water inside the pot 4 has boiled.

[0057] Thus, when the maintenance control means 49 determines that the water inside the pot 4 has boiled, it controls the energization and de-energization of the heating coil 11 so that the temperature of the pot 4 is maintained at a predetermined temperature, such as 100°C which is the boiling temperature of water, based on the detected temperature of the pot sensor 12, and continues the boiling state of the water inside the pot 4. In the rice cooker of this embodiment, for the type of boiling cleaning, the circulation steam method, which is a method of directly circulating heated steam to kill microorganisms, is adopted. The water inside the pot 4 is boiled to form steam, and the steam is made to adhere to the inner wall of the pot 4, the inner lid 24, the portion of the lid packing 25 facing the inside of the pot 4, the inner wall of the steam discharge path 33, and the steam port 15, thereby performing sterilization of the adhered locations and deodorization to eliminate odors. Here, the maintenance control means 49 controls to drive the lid heater 31 so that the amount of water droplets adhering to the inner lid 24 does not become excessive at the end of the boiling cleaning, and when the lid body 2 is opened after the boiling cleaning, it reduces the dripping of the water droplets adhering to the inner lid 24 along the surface of the inner lid 24 onto the upper surface of the pot housing portion 3.

[0058] When the display of the clock display body D18 becomes "about 0 minutes" and the maintenance control means 49 receives a timing signal indicating that the time set from the timing means 45 has elapsed, it controls to stop the energization of the heating coil 11 and transmits a signal indicating that the boiling cleaning operation has ended to the display / operation control means 51. The display control means 55, in response to this signal, controls the notification means 54 to perform a notification indicating that the boiling cleaning operation has ended, and also controls the display means 18 to display the top screen G1.

[0059] Next, the operation in the drying course of the rice cooker with the above configuration will be described. FIG. 9 graphically shows the temporal changes in the pot temperature t which is the detected temperature of the pot temperature sensor 12, P the lid temperature t which is the detected temperature of the lid temperature sensor 32, L the output P of the heating coil 11, P the output P of the lid heater 31, L respectively, in the rice cooking process of the rice cooker of this embodiment.

[0060] Referring to Fig. 9, the operation in the drying course of this embodiment will be described. For example, after cleaning the pot 4 and the inner lid assembly 23, the inner lid assembly 23 is attached to the lid body 2, the pot 4 is set in the pot housing portion 3, and then the lid body 2 is closed. Or in a state where the boiling cleaning operation has ended, with water droplets present on the pot 4, the inner lid 24, and the lid packing 25, the operation means 19 touches and operates the button display portion B16 of "Maintenance" on the top screen G1, and then touches and operates the button display portion B34 of "Drying Course" on the maintenance selection screen G2 to shift to the drying course confirmation screen G4.

[0061] Then, when the operation means 19 touches and operates the button display portion B54 of "Drying Start" on the drying course confirmation screen G4, the drying course information is sent from the display and operation control means 51 to the heating control means 41, and the maintenance control means 49 implements the drying course according to the heating pattern of the drying course.

[0062] When the drying course is started, it shifts to the first drying step. The maintenance control means 49 controls the solenoid 35 to roll the pressure regulating valve 34 to open the steam discharge path 33, putting the inside of the pot 4 in communication with the outside of the main body 1. Also, the maintenance control means 49 performs on-off power control of the heating coil 11 at a duty ratio of A% based on the temperature detection of the bottom of the pot 4 by the pot sensor 12 to strongly heat the pot 4, and performs continuous power-on control of the lid heater 31 based on the temperature detection of the inner lid 24 by the lid temperature sensor 32 to strongly heat the inner lid 24. By heating with both the heating coil 11 and the lid heater 31 in this way, the generation of a temperature difference between the pot 4 and the inner lid 24 is suppressed, reducing the possibility of condensation. Then, the display control means 55 controls the display means 18 to display a drying course implementation screen G6 as shown in Fig. 10.

[0063] Referring to the figure and explaining the drying course execution screen G6, at the front part thereof, a caution text display body D65 reading "Drying" is displayed. Further, behind the caution text display body D65 reading "Drying", a text display body D63 reading "Remaining" and a clock display body D18 that displays the remaining time until the end of the drying course and shows "about 30 minutes" in FIG. 10 are arranged side by side left and right. Also, at the rear part of the drying course execution screen G6, a time display body D23 and a "Stop" button display section B24 are arranged side by side left and right. By displaying the current time on the time display body D23, it can be used as a reference for the drying course end time, and the "Stop" button display section B24 enables the drying course to be ended at any time.

[0064] The pot temperature t in FIG. 9 P As shown in the graph of, when the duty ratio of the heating coil 11 is controlled to be turned on and off at A%, at the start, the temperature of the pot 4 rises, and for example, when the temperature of the pot 4 reaches the first pot temperature α where the target temperature is set to a value exceeding 100°C such as 104 to 105°C, the heating coil 11 turns off. When the temperature of the pot 4 drops below the first pot temperature α, the heating coil 11 turns on with the duty ratio of A% to control the on and off of the heating coil so that the temperature is maintained at the first pot temperature α, thereby controlling the temperature of the pot 4.

[0065] Also, when the maintenance control means 49 receives, from the lid temperature sensor 24, a temperature detection signal indicating that the temperature of the inner lid 24 has reached a first lid temperature β1 at which the target temperature is set, for example, to 95 to 100 °C, etc., the duty ratio of the lid heater 31 is controlled to be turned on and off at B%, and further, when it reaches a second temperature β2 set, for example, to 101 to 105 °C, etc., the lid heater is turned off and the lid heater 31 is controlled so that the temperature of the inner lid 24 is maintained at a third lid temperature β3 between the first lid temperature β1 and the second lid temperature β2. Since the inner lid assembly 23 uses a resin material, for example, in the lid packing 25, etc., by maintaining the temperature below the second lid temperature β2 in this way, the parts incorporated in the inner lid 24 and the inner lid assembly 23 can be dried without deteriorating the parts made of the resin material. Note that this is an example, and the third lid temperature β3 may be set to a value near 100 °C, for example, 96 to 101 °C, etc., as the target temperature.

[0066] In this way, in the first drying process, when the temperature of the pot 4 is maintained at the first pot temperature α and the temperature of the inner lid 24 is maintained at the third lid temperature β3, the water droplets adhering to the pot 4 and the inner lid 24 evaporate into water vapor, and this water vapor and heat are discharged outside the machine from the steam outlet 15 through the steam discharge path 33.

[0067] When the maintenance control means 49 receives, from the timing means 45, a timing signal indicating that the time T1 has elapsed since the start of the first drying process, the maintenance control means 49 ends the first drying process and shifts to the next second drying process. In this embodiment, the time T1 of the first drying process is set to, for example, half of the time T of the entire drying course, such as 15 minutes, but this is an example, and for example, the time T1 of the first drying process may be configured to be changed in accordance with the temperatures of the pot 4 and the inner lid 24 at the start of the drying course. When the temperatures of the pot 4 and the inner lid assembly 23 are low, such as after cleaning, the time T1 may be lengthened, for example, to 18 minutes, etc., to shorten the time T2 of the second drying process, and when the temperatures of the pot 4 and the inner lid assembly 23 are high, such as after the boiling cleaning operation, the time T1 may be shortened, for example, to 12 minutes, etc., to lengthen the time T2 of the second drying process. whole of the time T, for example, 15 minutes, but this is an example, and for example, the time T1 of the first drying process may be configured to be changed in accordance with the temperatures of the pot 4 and the inner lid 24 at the start of the drying course. When the temperatures of the pot 4 and the inner lid assembly 23 are low, such as after cleaning, the time T1 may be lengthened, for example, to 18 minutes, etc., to shorten the time T2 of the second drying process, and when the temperatures of the pot 4 and the inner lid assembly 23 are high, such as after the boiling cleaning operation, the time T1 may be shortened, for example, to 12 minutes, etc., to lengthen the time T2 of the second drying process.

[0068] When shifting to the second drying process, the maintenance control means 49 performs on-off control of the duty ratio when the heating coil 11 is ON based on the temperature detection of the bottom of the pot 4 by the pot sensor 12 at C% which is lower than or equal to A% (A ≥ C), and controls the heating coil 11 so that the temperature of the pot 4 is maintained at a second pot temperature γ (α > γ) at which the target temperature is set to a value lower than the first pot temperature α, for example, 91 to 92 °C. Also, based on the temperature detection of the inner lid 24 by the lid temperature sensor 32, the maintenance control means 49 performs on-off control of the duty ratio when the lid heater 31 is ON at D% which is lower than or equal to B% (B ≥ D), and controls the heating coil 11 so that the temperature of the inner lid 24 is maintained at a fourth lid temperature ε (β3 ≥ ε) at which the target temperature is set to a value equal to or lower than the third lid temperature β3, for example, 93 to 95 °C.

[0069] In this embodiment, the pot temperature t in FIG. 9 P and the lid temperature t L As shown in the graph, in the second drying process, the pot 4 and the inner lid 24 are maintained at a temperature lower than that in the first drying process, and by maintaining the temperature lower than 100 °C which is the boiling temperature of water, while drying the pot 4 and the inner lid 24 within the limited time T of the entire drying course, the risk of being burned even if the pot 4 and the inner lid 24 are touched after the drying course is suppressed. Also, in the second drying process, the fourth lid temperature ε is set to be higher than the second pot temperature γ (ε > γ). In the first drying process, the temperature reduction range of the inner lid 24 is made smaller than that of the pot 4 for the part where the temperature of the inner lid 24 could not be raised to the temperature of the pot 4, to promote the drying of the inner lid 24 and the components incorporated in the inner lid assembly 23, so that the drying of the inner lid 24 can be completed within the entire drying course time T. whole whole

[0070] When the display of the clock display body D18 becomes "about 0 minutes", the maintenance control means 49 starts from the start of the drying course from the timekeeping means 45 for the entire drying course time T wholeWhen receiving the elapsed timing signal, it performs control to stop the energization of the heating coil 11 and also performs control to stop the energization of the lid heater 31, and transmits a signal indicating that the drying course has ended to the display / operation control means 51. The display control means 55 controls the display means 18 to display a drying course end screen G7 as shown in FIG. 11 in response to this signal. On the other hand, assuming a case where the drying course is carried out at night or the like, the display control means 55 controls the notification means 54 not to notify that the drying course has ended, thereby improving the convenience for the user. Note that when the drying course ends, it may be configured such that the user can set whether to notify by sound that the drying course has ended by the notification means 54, and this setting may be configured to be set on a setting screen that is shifted when the setting button display section B20 on the top screen G1 is touched and operated, for example.

[0071] Referring to FIG. 11 to explain the drying course end screen G7, a text display body D71 reading "The drying course has ended" is displayed at the front part thereof. Also, behind the text display body D71 of "The drying course has ended", an explanatory text display body D72 reading "Please cool the interior and then cook rice and clean it." is displayed. Also, a button display section B24 of "OFF" is arranged at the rear part of the drying course end screen G7, enabling the drying course end screen G7 to be erased at any time and shifted to the top screen G1.

[0072] The display control means 55 controls the display means 18 to erase the drying course end screen G7 and shift to the top screen G1 when it receives from the pan sensor 12 a temperature detection signal of the pan 4 and a temperature detection signal of the inner lid 24 from the lid temperature sensor 32, indicating that both the temperature of the pan 4 and the temperature of the inner lid 24 have fallen below a predetermined temperature, for example, 45°C, which will not cause burns. Alternatively, when the display control means 55 receives from the timing means a timing signal indicating that a predetermined time, for example, 30 minutes, has elapsed since the end of the drying course, it controls the display means 18 to erase the drying course end screen G7 and shift to the top screen G1. Therefore, by checking the display means 18, it is possible to know whether the inside of the pan 4 has been cooled to a normal temperature and it is safe to touch the pan 4 or the inner lid 24.

[0073] As described above, in the rice cooker as the cooking appliance of the present embodiment, there are provided a pan 4 for containing rice and water as the object to be cooked, a heating coil 11 as the pan heating means for heating the pan 4, a pan sensor 12 as the pan temperature detection means for detecting the temperature of the pan 4, and a timing means 45 for measuring time. It has a drying course for drying the inside of the pan 4. In the drying course, based on the detected temperature from the pan sensor 12 and the timing of the timing means 45, a first drying step of heating the pan 4 by the heating coil 11 so as to maintain the first pan temperature α, which is a first pan temperature higher than the boiling temperature of water, for a first drying step time T1, which is a first time, and a second drying step of heating the pan 4 by the heating coil 11 so as to maintain it at a second pan temperature γ, which is a second pan temperature lower than the first pan temperature α, based on the detected temperature from the pan sensor 12, are sequentially performed.

[0074] With such a configuration, since the temperature of the pan 4 has dropped to the second pan temperature γ at the end of the drying course, it is possible to suppress the risk of burns even if the pan 4 is touched after the drying course while drying the pan 4 in a limited time.

[0075] In the rice cooker of this embodiment, an inner lid 24 that covers the opening of the pot 4, a lid heater 31 as lid heating means for heating the inner lid 24, and a lid temperature sensor 32 as lid temperature detection means for detecting the temperature of the inner lid 24 are provided. In the drying course, in the first drying step, based on the detected temperature from the lid temperature sensor 32 and the time measurement by the time measurement means 45, the inner lid 24 is heated by the lid heater 31 so as to maintain the temperature between a first lid temperature β1 and a second lid temperature β2, which is a third lid temperature β3, as the set first lid temperature, for the time T1 of the first drying step. In the second drying step, based on the detected temperature from the lid temperature sensor 32, the inner lid 24 is heated by the lid heater 31 so as to maintain the temperature at a fourth lid temperature ε, which is a second lid temperature below the third lid temperature β3.

[0076] With this configuration, it is possible to suppress the occurrence of a temperature difference between the pot 4 and the inner lid 24 and reduce the possibility of condensation. Since the temperature of the inner lid 24 has dropped to the fourth lid temperature ε at the end of the drying course, it is possible to suppress the risk of being burned even if the inner lid 24 is touched after the drying course while drying the inner lid 24 within a limited time.

[0077] In the rice cooker of this embodiment, the first pot temperature α is 100°C or higher, and the second pot temperature γ is less than 100°C. During the entire time T of the drying course, which is a limited time, whole while drying the pot 4, it is possible to suppress the risk of being burned even if the pot 4 is touched after the drying course.

[0078] In the rice cooker of this embodiment, there is a boiling cleaning as a boiling mode for boiling and cleaning the inside of the pot 4. In the boiling cleaning, with water contained in the pot 4, the pot 4 is heated by the heating coil 11 so as to maintain the boiling temperature of the water based on the detected temperature from the pot sensor 12. Since it is possible to perform a drying course for drying the pot 4 and the inner lid 24 after cleaning by boiling cleaning without the user touching the pot 4 or the inner lid 24, the usability of the user is improved.

[0079] In addition, the rice cooker of the present embodiment includes notification means 54 that notifies by sound at the start or end of the operation of the rice cooker, and the notification means 54 is configured to be able to be set so as not to notify that the drying course has ended. Since the drying course can be carried out at night or the like, the convenience for the user can be improved.

[0080] In addition, the rice cooker of the present embodiment includes display means 18 that displays various information related to cooking. The display means 18 is configured to display a drying course end screen G7 as a display indicating the end after the drying course ends. By checking the display means 18, it is possible to know whether or not the drying course has ended.

[0081] In addition, in the rice cooker of the present embodiment, the display means 18 displays a drying course end screen G7 as a display indicating that the inside of the pot 4 is at a high temperature after the drying course ends. The drying course end screen G7 automatically disappears and shifts to the top screen G1 when the temperature of the pot 4 drops to a predetermined temperature at which burns are not caused as the third temperature, or when a predetermined time such as 30 minutes as the second time has elapsed after the end of the drying course. By checking the display means 18, it is possible to know whether the inside of the pot 4 has been cooled to a normal temperature and it is safe to touch the pot 4 or the inner lid 24.

[0082] 4 Pot 11 Heating coil (heating means) 12 Pot sensor (pot temperature detection means) 18 Display means 24 Inner lid 25 Lid packing (elastic member) 31 Lid heater (lid heating means) 32 Lid temperature sensor (lid temperature detection means) 45 Timing means 54 Notification means G7 Drying course end screen (display indicating the end, display indicating that the inside of the pot 4 is at a high temperature) T1 Time of the first drying process (first time) α First pot temperature (first pot temperature) β3 Third lid temperature (first lid temperature) γ Second pot temperature (second pot temperature) ε Fourth lid temperature (second lid temperature)

Explanation of symbols

[0083] 4 Pot 11 Heating coil (heating means) 12 Pot sensor (pot temperature detection means) 18 Display means 24 Inner lid 31 Lid heater (lid heating means) 32 Lid temperature sensor (lid temperature detection means) 45 Timing means 54 Notification means G7 Drying course end screen (display indicating completion, display indicating that the inside of pot 4 is at a high temperature) T1 Time of the first drying process (first time) α First pot temperature (first pot temperature) β3 Third lid temperature (first lid temperature) γ Second pot temperature (second pot temperature) ε Fourth lid temperature (second lid temperature)

Claims

1. A pot for containing an object to be cooked, Pot heating means for heating the pot, Pot temperature detection means for detecting the temperature of the pot, An inner lid having an elastic member for sealing between the inner lid and the pot and covering the opening of the pot, Lid heating means for heating the inner lid, Lid temperature detection means for detecting the temperature of the inner lid, and It has a drying course for drying the inside of the pot, The drying course has a first drying step and a second drying step, In the first drying step, Using the first pot temperature higher than the boiling temperature of water as the target temperature, the pot is heated by the pot heating means, and using the first lid temperature lower than the first pot temperature as the target temperature, the inner lid is heated by the lid heating means. In the second drying step, Using the second pot temperature lower than the first pot temperature as the target temperature, the pot is heated by the pot heating means, and using the second lid temperature lower than the first pot temperature as the target temperature, the inner lid is heated by the lid heating means. A cooking heater characterized by this.

2. The cooking heater according to claim 1, characterized in that the second lid temperature is lower than the first lid temperature.

3. The cooking heater according to claim 1, characterized in that the second lid temperature is higher than the second pot temperature.

4. The first pot temperature is 100°C or higher, The cooking heater according to claim 1, characterized in that the second pot temperature is less than 100°C.

5. It has a boiling mode for boiling and washing the inside of the pot, In the boiling mode, in a state where water is contained in the pot, the pot is heated by the pot heating means so as to be maintained at the boiling temperature of the water based on the detected temperature from the pot temperature detection means. The cooking heater according to any one of claims 1 to 4.

6. It is provided with notification means for notifying by sound at the start or end of the operation of the cooking heater, The cooking heater according to claim 1, characterized in that the notification means can be set so as not to notify that it has ended at the end of the drying course.

7. It is provided with display means for displaying various information related to cooking, The cooking heater according to claim 1 or 6, characterized in that the display means displays that it has ended after the end of the drying course.

8. The display means displays that the inside of the pot is at a high temperature after the end, The heating cooker according to claim 7, characterized in that the indication of the high temperature automatically disappears when the temperature of the pan drops to a third temperature or when a second time has elapsed after the end.

Images