JP7209573B2 - rice cooker - Google Patents

Description

The present invention relates to a rice cooker.

Various improvements have been made to rice cookers in order to cook rice deliciously. Rice is cooked by heating rice in a pot, but the rice may be cooked unevenly depending on the location in the pot (for example, Patent Document 1). In the electric rice cooker of Patent Document 1, by arranging a light transmitting plate on the inner peripheral side of the side heater and providing a light reflecting plate on the outer peripheral side of the side heater, uneven absorption of water in the rice cooker and uneven cooking are suppressed. are doing.

JP-A-10-57237

However, although the electric rice cooker of Patent Literature 1 can cook rice, there is a demand for further improvement in how well the rice is cooked.

The present invention has been made in view of the above problems, and an object thereof is to provide a rice cooker capable of improving the finish of cooking rice.

A rice cooker according to the present invention includes a pot, a heating section, and a control section. The kettle is charged with rice and carbonated water. The heating unit heats the kettle. The control section controls the heating section. The control unit controls the heating unit to heat the kettle in a carbonated water cooking mode set for cooking rice using carbonated water.

According to the rice cooker of the present invention, it is possible to improve the finish of cooking rice.

(a) and (b) are schematic perspective views of the rice cooker of the present embodiment, and (c) is a schematic top view of the rice cooker. It is a flow chart for explaining rice cooking processing by the rice cooker of this embodiment. (a) is a graph showing temperature changes in a mode set to cook rice using water, and (b) shows temperature changes in a carbonated water rice cooking mode set to cook rice using carbonated water. graph. It is a typical top view of the rice cooker of this embodiment. It is a flow chart for explaining rice cooking processing by the rice cooker of this embodiment. It is a typical perspective view of the rice cooker of this embodiment. It is a schematic diagram of the rice cooker of this embodiment. It is a flow chart for explaining rice cooking processing by the rice cooker of this embodiment. It is a flow chart for explaining rice cooking processing by the rice cooker of this embodiment. (a) to (c) are graphs showing temperature changes by the rice cooker of the present embodiment. (a) and (b) are graphs showing temperature changes by the rice cooker of the present embodiment. It is a graph which shows the temperature change by the rice cooker of this embodiment.

EMBODIMENT OF THE INVENTION Hereinafter, with reference to drawings, embodiment of the rice cooker which concerns on this invention is described. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

[Embodiment 1]
First, an embodiment of a rice cooker 100 according to the present invention will be described with reference to FIG. 1(a) and 1(b) are schematic perspective views of the rice cooker 100 of the present embodiment, and FIG. 1(c) is a schematic top view of the rice cooker 100 of the present embodiment. be. FIG. 1A is a schematic diagram of a state in which the lid 114 is closed with respect to the body portion 112 in the rice cooker 100, and FIG. FIG. 10 is a schematic diagram of a state in which the device is closed;

As shown in FIGS. 1( a ) and 1 ( b ), rice cooker 100 includes body portion 112 , lid 114 , pot 120 , heating portion 130 , and control portion 140 . The body portion 112 has an open top shape, and a hole is provided in the center of the body portion 112 . The pot 120 is placed in the hole of the body portion 112 . Lid 114 is attached to one end of main body 112 . Lid 114 is provided so as to be openable and closable with respect to body portion 112 .

The hook 120 is placed inside the body portion 112 and attached to the body portion 112 . Note that the hook 120 is detachable from the body portion 112 .

When the pot 120 is attached to the body portion 112 , the pot 120 is covered with the body portion 112 and the lid 114 by closing the lid 114 with respect to the body portion 112 . The pot 120 is exposed by opening the lid 114 with respect to the body portion 112 .

Kettle 120 contains rice and carbonated water. The rice in pot 120 is cooked using carbonated water. Water may be added to the pot 120 in addition to rice and carbonated water.

The heating section 130 is arranged in the main body section 112 . The heating unit 130 heats the pot 120 placed on the body unit 112 . The heating unit 130 may generate heat in an electromagnetic manner. Heating unit 130 may include a coil.

Control unit 140 controls heating unit 130 . The controller 140 is arranged on the lid 114 . The control unit 140 controls the heating unit 130 to heat the kettle 120 in a carbonated water cooking mode set for cooking rice using carbonated water.

Control unit 140 includes a processor and memory. A processor is a hardware circuit configured by a central processing unit (CPU) or an application specific integrated circuit (ASIC) or the like. The processor controls the operation of each part of rice cooker 100 by reading and executing the control program stored in the memory. For example, the heating unit 130 heats the kettle 120 containing rice and carbonated water to cook rice. In one example, the heating unit 130 is controlled to heat the pot 120 according to a heating profile that indicates temporal changes in the temperature of the pot. Typically, the heating profile is set according to the amount of rice.

The rice cooker 100 of the present embodiment cooks rice in a carbonated water rice cooking mode set for cooking rice using carbonated water. Therefore, by putting carbonated water into the kettle 120 together with the rice and heating it, the rice can be cooked more plumply than when rice is cooked using water, and the rice can be cooked better.

The lid 114 is provided with an inner lid 114a. The inner lid 114a is provided so as to fit on the top of the pot 120. As shown in FIG. When the lid 114 is closed with respect to the body portion 112 , the inner lid 114 a is fitted to the top of the pot 120 .

Further, the lid 114 is provided with a cover 114b. The cover 114b is attached to the inner lid 114a.

As shown in FIGS. 1(a) and 1(c), the rice cooker 100 preferably further includes a display section 160 and an operation section 170. FIG. For example, display unit 160 and operation unit 170 are provided on lid 114 . Control unit 140 controls display unit 160 and operation unit 170 .

Display unit 160 displays numbers and images. The display unit 160 has a display. For example, displays include liquid crystal displays.

The operation unit 170 accepts user's operations. For example, the operation unit 170 includes operation switches for accepting user's operations. The operation switch may be a switch that receives a physical press, or may be a capacitive touch key. If the operation switch is a capacitive touch key, the backlight of the touch key may be used instead of the indicator. Note that the display unit 160 and the operation unit 170 may be integrated touch panels. The operation unit 170 is preferably capable of inputting changes to start/end of rice cooking, start/end of heat retention, amount of rice to be cooked and/or rice cooking completion time.

Here, operation unit 170 includes a plurality of operation buttons as operation switches. Each operation button is provided with an indicator that indicates that the operation corresponding to the button is being executed. The indicator includes a light emitting diode (LED).

For example, operation unit 170 includes rice cooking start button 172 . Rice cooking starts when the user presses the rice cooking start button 172 twice. In this case, the indicator of the rice cooking start button 172 lights up.

In addition, when the user presses the rice cooking start button 172 once, the display unit 160 displays the amount of rice cooked in the previous rice cooking. For example, when the user cooks 3 go of rice with rice cooker 100 yesterday and then cooks rice with rice cooker 100 the next day, display unit 160 displays the amount of 3 go. When rice cooking start button 172 is pressed again, control unit 140 starts cooking rice. In this case, the indicator of the rice cooking start button 172 lights up.

The operation unit 170 also includes a keep warm/cancel button 174a. Each time the user presses the keep warm/cancel button 174a, the keep warm and cancel are switched.

The operation unit 170 also includes a reservation button 174b. By pressing the reservation button 174b twice, the user can make a reservation to start or complete rice cooking at a predetermined time. In this case, the indicator of the reservation button 174b lights up.

Typically, when the reservation button 174b is pressed once, the display unit 160 displays the rice cooking completion time. After that, when the reservation button 174b is pressed again, the reservation of rice cooking is completed, and the indicator of the reservation button 174b lights up.

The operation unit 170 also includes an increase button 176a and a decrease button 176b. When the user presses the rice cooking start button 172 and the display unit 160 displays the amount of rice at the time of rice cooking immediately before as the amount of rice, by pressing the increase button 176a, the display unit 160 displays the amount of rice before pressing the increase button 176a. Display the amount of rice greater than After that, when the rice cooking start button 172 is pressed again, the input of the amount of rice to be cooked is completed, and the indicator of the rice cooking start button 172 lights up.

On the other hand, when the user presses the rice cooking start button 172 and the display unit 160 displays the amount of rice in the previous rice cooking as the amount of rice, by pressing the decrease button 176b, the display unit 160 displays the amount of the decrease button 176b. Display the amount of rice less than before pressing. After that, when the rice cooking start button 172 is pressed again, the input of the amount of rice to be cooked is completed, and the indicator of the rice cooking start button 172 lights up.

Further, when the user presses the reservation button 174b and the display unit 160 displays the rice cooking completion time, by pressing the increase button 176a, the display unit 160 displays the rice cooking completion time later than before pressing the increase button 176a. indicate. After that, when the reservation button 174b is pressed again, the reservation of rice cooking is completed, and the indicator of the reservation button 174b lights up.

On the other hand, when the user presses the reservation button 174b and the display unit 160 displays the rice cooking completion time, when the user presses the decrease button 176b, the display unit 160 displays the rice cooking completion time before pressing the decrease button 176b. Display time. After that, when the reservation button 174b is pressed again, the reservation of rice cooking is completed, and the indicator of the reservation button 174b lights up.

Next, the rice cooking process by the rice cooker 100 of this embodiment will be described with reference to FIGS. 1 and 2. FIG. FIG. 2 is a flowchart for explaining the rice cooking process by the rice cooker 100. As shown in FIG.

In step S<b>12 , the kettle 120 containing the weighed rice and carbonated water is attached to the main body 112 . For example, the user measures rice and an amount of carbonated water necessary for cooking the rice, and attaches the kettle 120 containing the weighed rice and carbonated water to the main body 112 . The amount of rice is the amount desired by the user. However, the amount of carbonated water is set according to rice. For example, when cooking 5 cups of rice, add 750 g of rice and about 1000 mL of carbonated water.

Carbonated water may be a commercial product. Carbonic acid concentration of carbonated water may be 10 ppm or more and 2000 ppm or less, or may be 50 ppm or more and 1500 ppm or less.

Rice cooking is started in step S14. Typically, rice cooking is started when the user presses the rice cooking start button 172 of the operation unit 170 .

In step S16, rice is made to absorb carbonated water in pot 120. As shown in FIG. At the time of water absorption, it is preferable that the whole rice grain is soaked in the carbonated water. In this specification, not only the absorption of water by rice but also the absorption of carbonated water by rice may be referred to as water absorption. The heating unit 130 does not have to heat the kettle 120 when water is absorbed. In this case, the temperature of kettle 120 is room temperature. For example, the water absorption period may be 10 minutes or more and 30 minutes or less, or may be 15 minutes or more and 25 minutes or less.

In step S18, heating is started. Specifically, the heating unit 130 heats the cauldron 120 . Note that the heating of the heating unit 130 in step S18 may be started when the rice absorbs the carbonated water in step S16. However, even in this case, the temperature of the kettle 120 is set to a temperature at which the rice does not gelatinize. For example, when the rice is heated when it absorbs water, the temperature of the kettle 120 is set to 60° C. or lower. From the viewpoint of avoiding gelatinization of the rice, the temperature of the kettle 120 when the rice absorbs water is preferably set to 50° C. or lower, more preferably 45° C. or lower.

In step S20, the temperature of pot 120 is raised. The heating unit 130 heats the pot 120 so that the temperature of the pot 120 rises. Note that the temperature of the kettle 120 may be increased following the start of heating in step S18. When the water temperature in pot 120 rises, the rice in pot 120 starts to gelatinize. When the rice is gelatinized, a protective film is formed on the surface of the rice, making it difficult for the rice to absorb water. Typically, the gelatinization start temperature of rice is 55°C or higher and 60°C or lower. As the temperature of the pot 120 rises, carbonic acid evaporates from the carbonated water in the pot 120 and the carbonic acid concentration of the carbonated water decreases. When the carbonic acid concentration becomes substantially zero, the carbonated water becomes almost water, the temperature of the pot 120 reaches 100° C., and the carbonated water in the pot 120 boils. The time from when the temperature of pot 120 starts to rise until the carbonated water in pot 120 boils may be 5 minutes or more and 20 minutes or less, or may be 7 minutes or more and 15 minutes or less.

In step S22, heating of kettle 120 is continued while carbonated water in kettle 120 is boiling, and the carbonated water in kettle 120 is maintained in a boiling state. Typically, the boiling period is maintained between 4 and 10 minutes.

In step S24, the rice in pot 120 is steamed. Typically, the temperature of kettle 120 is set to 90° C. or more and less than 100° C. during the rice steaming period. Also, the steaming period is 5 minutes or more and 30 minutes or less. When the rice steaming period ends, rice cooking is completed.

After that, if necessary, the rice in the pot 120 may be kept warm in step S26. For example, rice is kept at a temperature of 70°C. For example, rice cooker 100 terminates heat retention based on an instruction from the user. Note that the heat retention in step S26 may be omitted. As described above, the rice cooking process is completed.

The rice cooker 100 of the present embodiment can cook rice in a carbonated water rice cooking mode set for cooking rice using carbonated water. Therefore, by putting carbonated water into the pot 120 together with the rice and heating the rice, the rice can be cooked better than when the rice is cooked using water.

Next, the rice cooking process by the rice cooker 100 of the present embodiment will be described by comparing rice cooking using water and rice cooking using carbonated water with reference to FIGS. 1 to 3. FIG. FIG. 3(a) is a graph showing temperature changes when rice is cooked using water, and FIG. 3(b) shows temperature changes when rice is cooked using carbonated water in the rice cooker 100 of the present embodiment. graph.

First, with reference to FIG. 3(a), temperature changes in the case of rice cooking using water will be described. In FIG. 3(a), the periods change in order of water absorption period Pw1, temperature raising period Pw2, boiling period Pw3, steaming period Pw4, and heat retention period Pw5.

As shown in FIG. 3(a), first, the water absorption period Pw1 starts. Typically, when the user presses the rice cooking start button 172 after attaching the pot 120 filled with rice and water to the main body 112, the water absorption period Pw1 starts. During the water absorption period Pw1, the rice absorbs water. Here, the temperature of kettle 120 is room temperature. For example, the water absorption period Pw1 may be 15 minutes or more and 35 minutes or less, or may be 20 minutes or more and 30 minutes or less.

Next, the pot 120 is heated during the temperature rising period Pw2. The heating unit 130 heats the pot 120 so that the temperature of the pot 120 exceeds the rice gelatinization start temperature. The gelatinization start temperature is, for example, higher than 50°C and 60°C or lower. During the temperature rising period Pw2, the temperature of kettle 120 rises and reaches 100° C., and the water in kettle 120 boils. For example, the temperature rising period Pw2 may be 5 minutes or more and 20 minutes or less, or may be 7 minutes or more and 15 minutes or less.

Next, during the boiling period Pw3, the kettle 120 is heated to keep the water in the kettle 120 boiling. The temperature of kettle 120 is maintained at 100°C. During the boiling period Pw3, the water in kettle 120 continues to evaporate and the water in kettle 120 decreases. The loss of water from the kettle 120 by reducing the water in the kettle 120 is also called dry-up. The temperature of kettle 120 increases until it dries up. The temperature of pot 120 at the end of boiling period Pw3 is, for example, 115° C., but may be 101° C. or higher. Further, for example, the boiling period Pw3 may be 4 minutes or more and 10 minutes or less.

Next, in the steaming period Pw4, the heating amount is adjusted so that the temperature of the kettle 120 is maintained at approximately 95 to 100.degree. For example, the steaming period Pw4 may be 5 minutes or more and 30 minutes or less, or may be 15 minutes or more and 25 minutes or less. When the steaming period Pw4 is completed, rice cooking is completed. However, if desired, the rice may be kept warm.

Next, in the heat retention period Pw5, the kettle 120 is continued to be heated so that the temperature of the kettle 120 becomes even lower. The temperature of the kettle 120 is gradually lowered until the temperature of the kettle 120 reaches the heat insulation temperature. For example, the heat retention temperature is 60° C. or higher and 80° C. or lower. For example, the heat retention period Pw5 is 1 minute or more and 12 hours or less. Rice cooking using water is performed as described above.

As described above, the rice cooker 100 of the present embodiment cooks rice in the carbonated water rice cooking mode set for cooking rice using carbonated water. In the rice cooker 100 as well, the periods change in order of the water absorption period, the temperature raising period, the boiling period, the steaming period, and the heat retention period. However, at least one of the water absorption period, temperature raising period, boiling period, steaming period, and heat retention period in rice cooker 100 is the water absorption period, temperature raising period, boiling period, steaming period, and heat retention period when rice is cooked using water. different from

The water absorption time during cooking and the temperature profile during heating change according to the amount of rice, but here, the comparison is based on the assumption that the amount of rice is the same between rice cooked with water and rice cooked with carbonated water. do.

FIG. 3B is a graph showing temperature changes when the rice cooker 100 cooks rice using carbonated water. The periods change in order of the water absorption period Pc1, the temperature raising period Pc2, the boiling period Pc3, the steaming period Pc4, and the heat retention period Pc5.

As shown in FIG. 3(b), first, the water absorption period Pc1 starts. Typically, rice and carbonated water are placed in pot 120, and after mounting pot 120 on main body 112, the user presses rice cooking start button 172 to start water absorption period Pc1. During the water absorption period Pc1, rice absorbs carbonated water. Here, the temperature of kettle 120 is room temperature.

The water absorption period Pc1 is shorter than the water absorption period Pw1. Since carbonated water exhibits acidity, carbonated water is more easily absorbed by rice than water, so the water absorption period Pc1 can be shortened. For example, the water absorption period Pc1 may be 10 minutes or more and 30 minutes or less, or may be 15 minutes or more and 25 minutes or less.

Next, the pot 120 is heated during the temperature rising period Pc2. The heating unit 130 heats the pot 120 so that the temperature of the pot 120 exceeds the rice gelatinization start temperature. The gelatinization start temperature is, for example, higher than 50°C and 60°C or lower. The gelatinization initiation temperature may be a temperature at which at least one of the large amount of rice grains initiates gelatinization. When the kettle 120 containing carbonated water is attached to the main body 112, the carbonic acid component evaporates from the carbonated water as the temperature rises, and the carbonic acid concentration of the carbonated water becomes substantially zero. The temperature rises and reaches 100°C. At this time, the carbonated water in pot 120 boils. For example, the temperature rising period Pc2 may be 5 minutes or more and 20 minutes or less, or may be 7 minutes or more and 15 minutes or less.

Next, during the boiling period Pc3, the kettle 120 is heated to keep the carbonated water in the kettle 120 boiling. The temperature of kettle 120 is maintained at 100°C. During the boiling period Pc3, the carbonated water in kettle 120 continues to evaporate and the carbonated water in kettle 120 decreases. The temperature of kettle 120 increases until it dries up. For example, at the end of the boiling period Pc3, the temperature of pot 120 is 110° C. or higher and 130° C. or lower.

Note that the boiling period Pc3 is shorter than the boiling period Pw3. When carbonated water is used, it is preferable to shorten the boiling period Pc3 because bubbles are likely to form in the kettle 120 . For example, the boiling period Pc3 is 3 minutes or more and 8 minutes or less.

Next, in the steaming period Pc4, the kettle 120 is heated so that the temperature of the kettle 120 is lowered. The temperature of kettle 120 is gradually lowered until the temperature of kettle 120 reaches near the boiling point of carbonated water. For example, the temperature of kettle 120 is gradually lowered until the temperature of kettle 120 is slightly lower than the boiling point of carbonated water. For example, the steaming period Pc4 may be 5 minutes or more and 30 minutes or less, or may be 10 minutes or more and 25 minutes or less. When the steaming period Pc4 is completed, the rice is cooked and the rice cooking is completed. However, if desired, the rice may be kept warm.

Next, in the heat retention period Pc5, the kettle 120 continues to be heated so that the temperature of the kettle 120 becomes even lower. The temperature of the kettle 120 is gradually lowered until the temperature of the kettle 120 reaches the heat insulation temperature. For example, the heat retention temperature is 60° C. or higher and 80° C. or lower. For example, the heat retention period Pc5 is 1 minute or more and 12 hours or less. As described above, the period of rice cooker 100 changes in order of water absorption period Pc1, temperature raising period Pc2, boiling period Pc3, steaming period Pc4, and heat retention period Pc5.

As described above, the rice cooker 100 of the present embodiment cooks rice according to a temperature profile suitable for carbonated water. For example, the water absorption period Pc1 in the rice cooker 100 can be shorter than the water absorption period Pw1.

In the description given above with reference to FIGS. 1 to 3, the rice cooker 100 cooks rice in the carbonated water rice cooking mode set to cook rice using carbonated water. Not limited. The rice cooker 100 can cook rice in a carbonated water rice cooking mode, and may also cook rice in a water cooking mode set to cook rice using water.

[Embodiment 2]
Next, the rice cooker 100 of this embodiment will be described with reference to FIGS. 1 to 5. FIG. The rice cooker 100 can cook rice in a carbonated water rice cooking mode, and can also cook rice in a water cooking mode. FIG. 4 is a schematic top view of the rice cooker of this embodiment. Note that FIG. 4 is the same as the description above with reference to FIG. Duplicate descriptions are omitted to avoid duplication.

The rice cooker 100 of this embodiment can cook rice in both the water cooking mode and the carbonated water cooking mode. When rice cooker 100 cooks rice in the water cooking mode, rice cooker 100 cooks rice according to the mode set to cook rice using water. When rice is cooked in the water cooking mode, the control unit 140 controls the heating unit 130 so that the temperature of the kettle 120 follows the temperature profile shown in FIG. 3(a).

On the other hand, when rice cooker 100 cooks rice in the carbonated water rice cooking mode, rice cooker 100 cooks rice according to the mode set to cook rice using carbonated water. When rice is cooked in the carbonated water rice cooking mode, the controller 140 controls the heating unit 130 so that the temperature of the pot 120 follows the temperature profile shown in FIG. 3(b).

For example, when the amount of rice is equal, the water absorption period in the carbonated water rice cooking mode is set shorter than the water absorption period in the water cooking rice mode. Moreover, when the amount of rice is the same, the boiling period in the carbonated water rice cooking mode is set shorter than the boiling period in the rice cooking mode.

As shown in FIG. 4, the operation unit 170 has a rice cooking start button 172, a keep warm/cancel button 174a, a reservation button 174b, an increase button 176a and a decrease button 176b, as well as a water cooking rice mode selection button 178a and a carbonated water rice cooking mode selection button. It also has a button 178b. When the user presses water cooking rice mode selection button 178a, rice cooker 100 cooks rice according to the mode set for rice cooking using water. When the user presses carbonated water cooking mode selection button 178b, rice cooker 100 cooks rice according to the mode set for cooking rice using carbonated water.

Next, the rice cooking process by the rice cooker 100 of this embodiment will be described with reference to FIG. FIG. 5 is a flowchart for explaining the rice cooking process by the rice cooker 100. As shown in FIG.

First, in step S<b>12 , the user mounts the hook 120 on the main body 112 . At this time, the pot 120 is filled with the weighed rice and the weighed water or carbonated water.

Rice cooking is started in step S14. When the user presses the rice cooking start button 172 of the operation unit 170, rice cooking is started. At this time, the user selects whether to cook rice in the water cooking rice mode or in the carbonated water rice cooking mode. For example, if the user does not perform any operation, the rice cooking mode may be selected by default. Alternatively, if the user does not perform any operation, the carbonated rice cooking mode may be selected by default.

After that, in step S14a, the control unit 140 determines in which of the water cooking rice mode and the carbonated water rice cooking mode the rice is to be cooked. When it determines with rice-cooking in water cooking rice mode, it progresses to step S16a. When it is determined to cook rice in the carbonated water rice cooking mode, the process proceeds to step S16.

In step S16a, the rice absorbs water in the pot 120. As shown in FIG. At the time of water absorption, it is preferable that the whole rice grain is immersed in water. The heating unit 130 does not have to heat the kettle 120 when water is absorbed.

In step S18a, heating is started. The heating unit 130 heats the kettle 120 . Note that the heating of the heating unit 130 in step S18a may be started when the rice absorbs water in step S16a. However, even in this case, the temperature of the kettle 120 is set to a temperature at which the rice does not gelatinize.

In step S20a, the temperature of pot 120 is increased. The heating unit 130 heats the pot 120 so that the temperature of the pot 120 rises. Note that the temperature of the kettle 120 may be increased following the start of heating in step S18a. When the temperature of kettle 120 rises and reaches 100° C., the water in kettle 120 boils.

In step S22a, the heating of the pot 120 is continued while the water in the pot 120 is boiling, and the boiling state of the water in the pot 120 is maintained. Typically, the boiling period is from 4 minutes to 10 minutes.

In step S24a, the rice in pot 120 is steamed. Typically, the temperature of kettle 120 is set to 90° C. or more and less than 100° C. during the rice steaming period. Also, the steaming period is 5 minutes or more and 30 minutes or less. When the rice steaming period ends, rice cooking is completed.

After that, if necessary, the rice in the pot 120 may be kept warm in step S26a. For example, rice is kept at a temperature of 70°C. For example, rice cooker 100 terminates heat retention based on an instruction from the user. It should be noted that the heat retention of the rice shown in step S26a may be omitted.

In step S16, rice is made to absorb carbonated water in pot 120. As shown in FIG. At the time of water absorption, it is preferable that the whole rice grain is soaked in the carbonated water. After that, the steps for moving to step S18 are the same as those in the flow chart of FIG. 2, so description thereof will be omitted.

In this embodiment, the user can select whether to cook rice in either the water cooking mode or the carbonated water cooking mode. Therefore, the rice can be cooked according to the user's preference.

In the above description with reference to FIGS. 1 to 5, the kettle 120 containing carbonated water or water is attached to the main body 112 to cook rice, but the present embodiment is not limited to this. Rice cooker 100 may cook rice by supplying carbonated water or water to pot 120 after pot 120 is attached to body portion 112 .

[Embodiment 3]
Next, the rice cooker 100 of this embodiment will be described with reference to FIGS. 1, 6 and 7. FIG. FIG. 6 is a schematic perspective view of the rice cooker 100 of this embodiment. The rice cooker 100 of this embodiment is the same as the rice cooker 100 described above with reference to FIG. Therefore, redundant descriptions are omitted to avoid redundancy.

Rice cooker 100 of the present embodiment further includes water supply unit 150 in addition to main unit 112 , lid 114 , pot 120 , heating unit 130 and control unit 140 . An inner lid 114a is provided on the lid 114, and a cover 114b is attached to the inner lid 114a. The cover 114b is provided with a through hole 114c penetrating through the thickness of the cover 114b.

The water supply unit 150 supplies carbonated water or water to the kettle 120 . In this specification, supplying not only water but also carbonated water to the kettle 120 may be referred to as supplying water or adding water.

The water supply portion 150 is arranged on the body portion 112 and the lid 114 . The water supply unit 150 supplies carbonated water or water to the pot 120 after the heating unit 130 heats the pot 120 . Note that the water supply unit 150 may supply carbonated water or water to the pot 120 before the heating unit 130 heats the pot 120 . Control unit 140 controls heating unit 130 and water supply unit 150 .

Next, the rice cooker 100 of this embodiment will be described with reference to FIGS. 1, 6 and 7. FIG. FIG. 7 is a schematic diagram of the rice cooker 100 of this embodiment. 7 shows the rice cooker 100 with the lid 114 closed with respect to the main body 112, but the main body 112 and the lid 114 are omitted in FIG.

When the lid 114 is closed with respect to the body portion 112, the pot 120 engages with the inner lid 114a. The inner lid 114a is detachably attached to the pot 120. As shown in FIG. A cover 114b is attached to the inner side of the inner lid 114a.

As described above, the heating unit 130 heats the cauldron 120 . The heating unit 130 is provided facing the kettle 120 .

The water supply section 150 includes a tank 151 , a pipe 152 , a flow meter 153 , a pump 154 and a heater 155 . Tank 151 , flow meter 153 and pump 154 are provided in body portion 112 . Piping 152 is provided in body portion 112 and lid 114 .

Here, the tank 151 stores carbonated water or water. Note that the tank 151 is preferably detachable from the body portion 112 . However, the tank 151 does not have to be detachable from the body portion 112 .

A pipe 152 connects the tank 151 and the pot 120 . One end of the pipe 152 is connected to the tank 151, and the other end of the pipe 152 is connected to the inner lid 114a. A flow meter 153 and a pump 154 are provided in the pipe 152 .

A flow meter 153 measures the flow rate of carbonated water or water flowing through the pipe 152 . Pump 154 supplies carbonated water or water in tank 151 to cauldron 120 . Carbonated water or water flowing through the pipe 152 reaches the top of the cover 114b in the pot 120, passes through the through hole 114c of the cover 114b, and reaches the pot 120. The controller 140 shown in FIG. 1 supplies a predetermined amount of carbonated water or water in the tank 151 to the pot 120 by driving the pump 154 based on the measurement result of the flow meter 153 .

The heater 155 heats the liquid flowing through the pipe 152 . When the water supply unit 150 supplies water, the water supply unit 150 preferably includes a heater 155 . The heater 155 heats water flowing through the pipe 152 . A heater 155 allows heated water to be supplied to the kettle 120 . As a result, even if the water supply unit 150 supplies water to the pot 120 when the heating unit 130 heats the pot 120, the change in water temperature in the pot 120 can be suppressed.

Rice cooker 100 preferably includes temperature measurement unit 182 . A temperature measurement unit 182 measures the temperature of the kettle 120 . Control unit 140 may control heating unit 130 based on the measurement result of temperature measurement unit 182 .

Rice cooker 100 further includes weight measurement unit 184 . A weight measurement unit 184 measures the weight of the kettle 120 . The weight measuring section 184 is installed on the main body section 112 .

The weight measuring unit 184 measures the weight of the contents in the kettle 120 together with the weight of the kettle 120 itself. Since the memory of the control unit 140 stores the weight of the pot 120 itself, the control unit 140 can obtain the weight of the contents in the pot 120 . For example, if the kettle 120 contains rice and carbonated water, the controller 140 can obtain the weight of the rice and carbonated water.

Also, the control unit 140 can individually acquire the weight of rice and the weight of carbonated water. For example, the control unit 140 can individually obtain the weight of the rice and the weight of the carbonated water based on the weight of the rice and carbonated water in the pot 120 and the temperature change of the pot 120 with respect to the amount of heating by the heating unit 130 . The memory of the control unit 140 stores the temperature change with respect to the heating amount for each weight of rice and carbonated water.

FIG. 8 is a flowchart for explaining the rice cooking process by the rice cooker 100. As shown in FIG. The flow chart of FIG. 8 is the same as the flow chart described above with reference to FIG. , redundant descriptions are omitted to avoid redundancy.

In step S<b>12 , the pot 120 containing rice and carbonated water is attached to the main body 112 . Typically, a user attaches a kettle 120 containing rice and carbonated water to body portion 112 . However, at this time, the user does not need to measure rice and carbonated water. However, it is preferable that the cauldron 120 contains enough carbonated water to soak the whole grain of rice.

Rice cooking is started in step S14. Typically, when the user presses the rice cooking start button 172 of the operation unit 170, rice cooking is started. A weight measurement unit 184 measures the weight of the kettle 120 containing rice and carbonated water. Thereby, the control unit 140 acquires the weight of the rice and carbonated water in the kettle 120 . Control unit 140 acquires the weight of rice and carbonated water in kettle 120 based on the measurement result of weight measurement unit 184 .

In step S16a, water absorption is started. Rice absorbs carbonated water.

In step S16b, the weight of rice in pot 120 is obtained. At this time, the heating unit 130 heats the pot 120 for a short period of time, and the temperature measuring unit 182 measures the temperature of the pot 120 . It is preferable that the temperature rise of the kettle 120 by the heating unit 130 is 5° C. or less. The control unit 140 acquires the weight of the rice in the pot 120 from the amount of heating and the change in the temperature of the pot 120 .

In step S<b>16 c , the water supply unit 150 supplies carbonated water or water to the pot 120 . The control unit 140 controls the water supply unit 150 so that the amount of carbonated water and/or water suitable for the water absorption of the rice in the kettle 120 is stored.

At step S16d, the water absorption ends. The steps after step S18 are the same as those described above with reference to FIG. 2, so the description is omitted. Also here, the rice is cooked using carbonated water, so the rice can be cooked better.

In the description with reference to FIG. 8, carbonated water or water is supplied to the pot 120 from the water absorption in step S16a after the start of rice cooking in step S14 to the end of water absorption in step S16d. Therefore, even if the weight of the rice and the carbonated water in the pot 120 is not strictly weighed when attaching the pot 120 to the main body 112, the user can cook the rice appropriately with an appropriate amount of carbonated water and/or water. be able to.

In the description above with reference to FIG. 8, the kettle 120 containing rice and carbonated water is attached to the main body 112, but the present embodiment is not limited to this. A kettle 120 containing rice without carbonated water and water may be attached to the body portion 112 .

Next, the rice cooking process by the rice cooker 100 of this embodiment will be described with reference to FIGS. 6, 7 and 9. FIG. FIG. 9 is a flowchart for explaining the rice cooking process by the rice cooker 100. As shown in FIG. 9 is the same as the flow chart described above with reference to FIG. 8, except that neither carbonated water nor water is contained in the kettle 120 when the kettle 120 is attached to the main body 112. duplicate descriptions are omitted to avoid redundancy.

In step S<b>12 , the pot 120 containing rice is attached to the main body 112 .

Rice cooking is started in step S14. Typically, when the user presses the rice cooking start button 172 of the operation unit 170, rice cooking is started. A weight measurement unit 184 measures the weight of the pot 120 containing rice. Thereby, the control unit 140 acquires the weight of rice in the kettle 120 . The control unit 140 acquires the weight of the rice in the pot 120 based on the measurement results of the weight measurement unit 184 .

In step S<b>16 s, the water supply unit 150 supplies carbonated water to the pot 120 . The control unit 140 controls the water supply unit 150 so that water is stored to such an extent that the whole rice grains in the pot 120 are submerged in the carbonated water.

Subsequently, in step S16t, water absorption is started. Rice absorbs carbonated water.

In step S<b>16 u , the heating unit 130 heats the pot 120 . However, the temperature rise of pot 120 by heating unit 130 is preferably 5° C. or less. The control unit 140 acquires the weight of the rice in the pot 120 from the relationship between the amount of heating by the heating unit 130 and the temperature measured by the temperature measurement unit 182 .

In step S16v, the water supply unit 150 supplies the kettle 120 with carbonated water. The control unit 140 controls the water supply unit 150 so that the amount of carbonated water suitable for the water absorption of the rice in the pot 120 is stored.

In step S16w, the water absorption ends. The steps after step S18 are the same as those described above with reference to FIGS. 2 and 8, so the description is omitted. Here, too, the carbonated water is used when the rice is cooked, and the rice is cooked in the carbonated water rice cooking mode, so that the rice can be cooked better.

As described with reference to FIG. 9, in rice cooker 100, carbonated water is supplied in steps S16u and S16v after starting rice cooking in step S14. Therefore, the user can improve the finish of rice cooking without adding carbonated water in the pot 120 when attaching the pot 120 to the main body portion 112 .

In the above description with reference to FIGS. 8 and 9, water is added before the end of water absorption in step S16d or step S16w, but the present embodiment is not limited to this. In this embodiment, water may be added after starting the heating in step S18.

Next, temperature changes in the rice cooker 100 of this embodiment will be described with reference to FIGS. 1 to 11. FIG. FIG. 10( a ) is a graph for explaining changes over time in the temperature of kettle 120 in rice cooker 100 . In the rice cooker 100 of the present embodiment, after rice cooking is started, the periods change in order of the water absorption period P1, the temperature raising period P2, the boiling period P3, the steaming period P4, and the heat retention period P5.

As shown in FIG. 10(a), first, the water absorption period P1 starts. During the water absorption period P1, rice is made to absorb carbonated water. It is preferable that the whole rice grains in the kettle 120 are soaked in the carbonated water at the time of water absorption.

Typically, when the user presses the rice cooking start button 172 after attaching the pot 120 containing rice and carbonated water to the main body 112, the water absorption period P1 starts. During the water absorption period P1, rice absorbs carbonated water. Here, the temperature of kettle 120 is room temperature. For example, the water absorption period P1 may be 10 minutes or more and 30 minutes or less, or may be 15 minutes or more and 25 minutes or less.

Next, the kettle 120 is heated during the temperature rising period P2. During the temperature rising period P2, the heating unit 130 heats the pot 120 so that the temperature of the pot 120 exceeds the rice gelatinization start temperature. The gelatinization start temperature is, for example, higher than 50°C and 60°C or lower. The gelatinization initiation temperature may be a temperature at which at least one of the large amount of rice grains initiates gelatinization. When the kettle 120 containing rice and carbonated water is attached to the main body 112, the temperature of the kettle 120 rises and reaches 100° C. during the temperature rising period P2. At this time, the carbonated water in pot 120 boils.

Next, during the boiling period P3, the kettle 120 is heated to keep the carbonated water in the kettle 120 boiling. Therefore, the temperature of the kettle 120 is maintained at 100.degree. During the boiling period P3, the carbonated water in kettle 120 continues to evaporate and the carbonated water in kettle 120 decreases. The temperature of the kettle 120 increases until the carbonated water in the kettle 120 decreases and disappears.

Next, in the steaming period P4, the heating amount is adjusted so that the temperature of the pot 120 is maintained at approximately 95 to 100.degree. When the steaming period P4 is completed, the rice is cooked and the rice cooking is completed. However, if necessary, the rice may be kept warm.

Next, during the heat retention period P5, the heating amount of the kettle 120 is reduced so that the temperature of the kettle 120 is further lowered. The temperature of the kettle 120 is gradually lowered until the temperature of the kettle 120 reaches the heat insulation temperature. For example, the heat retention temperature is 60° C. or higher and 80° C. or lower. For example, the heat retention period P5 is 1 minute or more and 12 hours or less. As described above, the period of rice cooker 100 changes in order of water absorption period P1, temperature rising period P2, boiling period P3, steaming period P4, and heat retention period P5.

In FIG. 10A, the water supply unit 150 supplies carbonated water or water to the pot 120 during the temperature rising period P2 as step SW1. Therefore, carbonated water or water required after the temperature rising period P2 is replenished. Therefore, the amount of carbonated water in kettle 120 at the start of temperature rising period P2 may be small. Since the amount of carbonated water in the pot 120 at the start of the temperature rising period P2 can be reduced, temperature unevenness can be suppressed and the time until gelatinization can be shortened.

When the water supply unit 150 supplies carbonated water or water to the pot 120 in step SW1, the water supply unit 150 preferably supplies water heated by the heater 155 . In this case, it is possible to suppress a change in water temperature in the pot 120 due to the water supply from the water supply unit 150 . Alternatively, when the water supply unit 150 supplies carbonated water to the kettle 120 in step SW1, it is preferable to supply the carbonated water to the kettle 120 without being heated by the heater 155 . Thereby, bubbling in the pot 120 can be suppressed.

In addition, in FIG. 10A, the water supply unit 150 supplies water to the pot 120 during the temperature rising period P2 in step SW1, but the present embodiment is not limited to this. The water supply unit 150 may supply carbonated water or water to the pot 120 during the boiling period P3.

FIG. 10(b) is a graph for explaining the time change of the temperature of pot 120 in rice cooker 100. As shown in FIG. In FIG. 10(b), the periods change in order of a water absorption period P1, a temperature raising period P2, a boiling period P3, a steaming period P4, and a heat retention period P5.

In FIG. 10B, the water supply unit 150 supplies carbonated water or water to the pot 120 during the boiling period P3 as step SW2. Therefore, carbonated water or water required after the boiling period P3 is replenished. As a result, the amount of carbonated water or water in pot 120 during the period from the start of temperature raising period P2 to step SW2 can be reduced, so that temperature unevenness in pot 120 between the start of heating and the addition of water in step SW2 can be reduced. The heating period P2 and/or the boiling period P3 can be shortened as well as being suppressed.

Here, as step SW2, the water supply unit 150 supplies carbonated water or water to the pot 120 while the temperature of the pot 120 is maintained at approximately 100°C. Therefore, carbonated water or water necessary for the period after the dry-up temperature rises is replenished. As a result, the amount of carbonated water or water in the pot 120 can be reduced during the period from the start of the temperature rising period P2 until the temperature of the pot 120 reaches approximately 100° C., so that the temperature unevenness of the pot 120 can be suppressed and the temperature rising period P2 and/or boiling period P3 can be shortened.

In FIG. 10(b), the water supply unit 150 supplies water while the temperature of the cauldron 120 is maintained at approximately 100° C. in step SW2, but the present embodiment is not limited to this. The water supply unit 150 may supply water to the pot 120 while the temperature of the pot 120 exceeds approximately 100°C.

FIG. 10(c) is a graph for explaining the time change of the temperature of pot 120 in rice cooker 100. As shown in FIG. In FIG. 10(c), the periods change in order of a water absorption period P1, a temperature raising period P2, a boiling period P3, a steaming period P4, and a heat retention period P5.

In FIG. 10(c), the water supply unit 150 supplies carbonated water or water to the kettle 120 while the temperature of the kettle 120 exceeds 100° C. as step SW2′. Therefore, carbonated water or water required after the steaming period P4 is replenished. As a result, the amount of water during the period from the start of the heating period P2 to the boiling period P3 can be reduced, so that the temperature unevenness of the pot 120 can be suppressed and the heating period P2 and/or the boiling period P3 can be shortened.

When carbonated water or water is supplied in step SW2' while the temperature of pot 120 exceeds approximately 100° C., the temperature of pot 120 once drops and then rises again. After that, the temperature exceeds 100° C. and rises to the dry-up temperature. Therefore, during the boiling period P3, the temperature of pot 120 reaches its peak twice.

When the water supply unit 150 supplies water to the cauldron 120 in step SW2 and/or step SW2′, the water supply unit 150 preferably supplies water heated by the heater 155 . In this case, it is possible to suppress a change in water temperature in the pot 120 due to the water supply from the water supply unit 150 . Alternatively, when the water supply unit 150 supplies carbonated water to the pot 120 in step SW2, it is preferable to supply the carbonated water to the pot 120 without being heated by the heater 155 . Thereby, bubbling in the pot 120 can be suppressed.

10(b) and 10(c), the water supply unit 150 supplies water to the pot 120 during the boiling period P3 in step SW2 or step SW2', but the present embodiment is not limited to this. The water supply unit 150 may supply carbonated water or water to the pot 120 during the steaming period P4.

FIG. 11( a ) is a graph for explaining changes over time in the temperature of kettle 120 in rice cooker 100 . In FIG. 11(a), the periods change in order of a water absorption period P1, a temperature rising period P2, a boiling period P3, a steaming period P4, and a heat retention period P5.

In FIG. 11(a), the water supply unit 150 supplies carbonated water or water to the pot 120 during the steaming period P4 as step SW3. In step SW3, since carbonated water or water is supplied, drying of the rice can be suppressed.

When the water supply unit 150 supplies water to the kettle 120 in step SW3, the water supply unit 150 preferably supplies water heated by the heater 155 . In this case, it is possible to suppress a change in water temperature in the pot 120 due to the water supply from the water supply unit 150 . Alternatively, when the water supply unit 150 supplies carbonated water to the pot 120 in step SW3, it is preferable to supply the carbonated water to the pot 120 without being heated by the heater 155 . Thereby, bubbling in the pot 120 can be suppressed.

In FIG. 11A, the water supply unit 150 supplies water to the pot 120 during the steaming period P4 in step SW3, but the present embodiment is not limited to this. The water supply unit 150 may supply carbonated water or water to the pot 120 during the heat retention period P5.

FIG. 11(b) is a graph for explaining the time change of the temperature of pot 120 in rice cooker 100. As shown in FIG. In FIG. 11(b), the periods change in order of a water absorption period P1, a temperature rising period P2, a boiling period P3, a steaming period P4 and a heat retention period P5.

In FIG. 11(b), the water supply unit 150 supplies carbonated water or water to the pot 120 during the heat retention period P5 as step SW4. Since the carbonated water or water is supplied in step SW4, drying of the rice can be suppressed.

In the above description with reference to FIGS. 10(a) to 11(b), water is supplied to kettle 120 as steps SW1 to SW4 during temperature rising period P2, boiling period P3, steaming period P4, and heat retention period P5. However, the present embodiment is not limited to this. Carbonated water or water may be supplied to kettle 120 multiple times as steps SW1, SW2, SW3, or SW4 within the same arbitrary period of temperature rising period P2, boiling period P3, steaming period P4, or heat retention period P5. For example, the water supply unit 150 may supply carbonated water or water to the cauldron 120 multiple times during the temperature rising period P2.

Furthermore, in the above description with reference to FIGS. 10(a) to 11(b), carbonated water or water is added to kettle 120 as steps SW1 to SW4 during temperature raising period P2, boiling period P3, steaming period P4, and heat retention period P5. , but the present embodiment is not limited thereto. Carbonated water or water may be supplied to the pot 120 multiple times by arbitrarily combining steps SW1 to SW4 of arbitrary periods of the heating period P2, the boiling period P3, the steaming period P4, and the warming period P5. For example, the water supply unit 150 may supply carbonated water or water in step SW1 during the temperature rising period P2, and then supply carbonated water or water in step SW2 during the boiling period P3.

In the rice cooker 100 of the present embodiment, the water supply unit 150 supplies water to the kettle 120 from the temperature rising period P2 to the end of the heat retention period P5. As a result, the amount of carbonated water or water in the kettle 120 can be reduced during the period from the start of the temperature raising period P2 to the water supply. The warming period P2, the boiling period P3 and/or the steaming period P4 can be shortened.

In the above description with reference to FIGS. 10 and 11, the temperature of kettle 120 is room temperature during water absorption period P1, but the present embodiment is not limited to this. The heating unit 130 may heat the pot 120 during the water absorption period P1.

Next, temperature changes in the rice cooker 100 of this embodiment will be described with reference to FIGS. 6 to 12. FIG. FIG. 12 is a graph for explaining changes over time in the temperature of pot 120 in rice cooker 100. As shown in FIG. In FIG. 12, the periods change in order of a water absorption period P1, a temperature raising period P2, a boiling period P3, a steaming period P4, and a heat retention period P5. Note that FIG. 12 is the same as FIG. 10(a) except that the temperature of the pot 120 rises during the water absorption period P1, and redundant description is omitted to avoid redundancy.

As shown in FIG. 12, the water absorption period P1 begins. Typically, when the user presses the rice cooking start button 172 after attaching the pot 120 containing rice and carbonated water to the main body 112, the water absorption period P1 starts. During the water absorption period P1, rice absorbs carbonated water. Typically, the temperature of kettle 120 is room temperature.

Note that the pot 120 is heated so that the temperature of the pot 120 during the water absorption period P1 is higher than the room temperature. However, during the water absorption period P1, the temperature of pot 120 is set to a temperature lower than the gelatinization start temperature. For example, the temperature of kettle 120 is preferably set to 50° C. or lower, and more preferably set to 45° C. or lower.

During the water absorption period P1, rice is made to absorb carbonated water. By heating the carbonated water during the water absorption period P1, the water absorption period P1 can be shortened compared to the case of absorbing normal temperature water. For example, the water absorption period P1 may be 12 minutes or more and 28 minutes or less, or may be 15 minutes or more and 25 minutes or less. It should be noted that the steps after the temperature rising period P2 are the same as those described above with reference to FIGS.

According to this embodiment, the water absorption period P1 can be shortened because the carbonated water is heated during the water absorption period P1. Note that the water supply unit 150 may supply carbonated water or water to the kettle 120 after starting to heat the carbonated water during the water absorption period P1. In this case as well, it is possible to suppress unevenness in the temperature of the pot 120 from the start of heating to the water supply, and to shorten the water absorption period P1.

For example, as shown in FIG. 12, the water supply unit 150 may supply carbonated water or water to the pot 120 during the water absorption period P1 as step SW0. Therefore, carbonated water or water required after step SW0 is replenished. Therefore, the amount of carbonated water in kettle 120 from the start of heating in water absorption period P1 to step SW0 may be small, and temperature unevenness can be suppressed and the water absorption period can be shortened.

In addition, when the water supply unit 150 supplies water to the pot 120 in step SW0, the water supply unit 150 preferably supplies water heated by the heater 155 . In this case, it is possible to suppress a change in water temperature in the pot 120 due to the water supply from the water supply unit 150 . Alternatively, when the water supply unit 150 supplies carbonated water to the kettle 120 in step SW1, it is preferable to supply the carbonated water to the kettle 120 without being heated by the heater 155 . Thereby, bubbling in the pot 120 can be suppressed.

Although the rice cooker 100 is used for cooking rice in the above description with reference to FIGS. 1 to 12, the present embodiment is not limited to this. The rice cooker 100 may be used for purposes other than cooking rice. For example, the rice cooker 100 may be used as an automatic cooking pot for purposes other than cooking rice. In one example, rice cooker 100 may be an automatic cooking pot capable of cooking rice as one function.

The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above embodiments, and can be implemented in various aspects without departing from the gist of the present invention. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be omitted from all components shown in the embodiments. Furthermore, components across different embodiments may be combined as appropriate. In order to make the drawings easier to understand, the drawings mainly show each component schematically. may be different. In addition, the material, shape, dimensions, etc. of each component shown in the above embodiment are examples and are not particularly limited, and various changes are possible without substantially departing from the effects of the present invention. be.

INDUSTRIAL APPLICABILITY The present invention is useful in the field of rice cookers.

REFERENCE SIGNS LIST 100 rice cooker 112 main unit 114 lid 120 pot 130 heating unit 140 control unit 150 water supply unit

Claims (4)

a kettle for containing rice and carbonated water;
a heating unit that heats the kettle;
A control unit that controls the heating unit,
The control unit controls the heating unit to heat the pot in a carbonated water cooking mode set for cooking rice using carbonated water,
The control unit can control the heating unit to heat the pot in a water cooking mode set for cooking rice using water,
The heating profile of the heating unit when cooking rice in the carbonated water rice cooking mode is different from the heating profile of the heating unit when cooking rice in the water cooking rice mode,
A rice cooker, wherein a water absorption period for rice cooking in the carbonated water rice cooking mode is shorter than a water absorption period for rice cooking in the water cooking rice mode . a kettle for containing rice and carbonated water;
a heating unit that heats the kettle;
a control unit that controls the heating unit;
with
The control unit controls the heating unit to heat the pot in a carbonated water cooking mode set for cooking rice using carbonated water,
The control unit can control the heating unit to heat the pot in a water cooking mode set for cooking rice using water,
The heating profile of the heating unit when cooking rice in the carbonated water rice cooking mode is different from the heating profile of the heating unit when cooking rice in the water cooking rice mode,
The rice cooker, wherein when the rice is cooked in the carbonated water rice cooking mode, the control unit stops heating of the kettle by the heating unit during a water absorption period. a kettle for containing rice and carbonated water;
a heating unit that heats the kettle;
a control unit that controls the heating unit;
with
The control unit controls the heating unit to heat the pot in a carbonated water cooking mode set for cooking rice using carbonated water,
The control unit can control the heating unit to heat the pot in a water cooking mode set for cooking rice using water,
The heating profile of the heating unit when cooking rice in the carbonated water rice cooking mode is different from the heating profile of the heating unit when cooking rice in the water cooking rice mode,
A rice cooker, wherein a boiling period for rice cooking in the carbonated water rice cooking mode is shorter than a boiling period for rice cooking in the water cooking rice mode. 4. The rice cooker according to any one of claims 1 to 3 , further comprising an operation unit for selecting which of said carbonated water rice cooking mode and said water cooking mode to cook rice.

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