JPH08308720A - Rice cooker - Google Patents

Abstract

PURPOSE: To cook rice into burnt rice or non-burnt rice corresponding to a taste by changing the heating amount of an additional cooking pattern in a steaming process so as to increase it when a rice cooking control means sets a burning function by using a burning function setting means. CONSTITUTION: A rice cooking control means 6 cooks rice while controlling a heating means 2 with the output of a temperature detecting means 3 as an input. In addition, when the burning function is set by a burning function setting means 4, the rice cooking control means 6 can change the heating amount of the additional cooking pattern so as to increase it by using the temperature detecting means 3 in a rice cooking process and using an additional cooking pattern setting means 5 in the steaming process after a prescribed temperature is detected. When the burning function is set by the burning function setting means 4 in order to cook burnt rice, the heating amount of ordinary rice cooking is increased and rice cooking is executed while adding equally 5 seconds to the ON time of ON/OFF duty. For example, rice cooking is performed while adding the heating amount of rice cooking for nine seconds, instead of adding for four seconds in a 16-second cycle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker mainly used at home on a daily basis.

[0002]

2. Description of the Related Art In recent years, needs for diversification and sophistication of consumers' tastes have become stronger, and rice cookers controlled by a micro computer have become popular in order to cook more delicious rice.

Under such circumstances, non-burnable rice cookers have been popularized, and some rice cookers that can burn scorched rice are remembered because the rice cooked in the old pot had a scorched bottom but was delicious. Has come to be requested in.

Conventionally, the rice cooking process of this type of rice cooker is generally as shown in FIG. As shown in FIG. 5, first, a pre-cooking step in which rice absorbs water is performed. Next, heating is performed at the maximum heating amount until boiling, and then a heating process is performed in which the heating amount is adjusted according to the amount of cooked rice to maintain boiling. Finally, during the steaming process in which the rice absorbs water evenly over a certain period of time and is gelatinized, additional cooking is performed by heating the rice at the bottom of the pan for a certain period of time with a heating amount that does not burn the rice, and the rice cooking is completed.

FIG. 6 shows a view of the operating portion of the rice cooker. In FIG. 6, 61 is a cooking key used for cooking rice, 62 is a cut / heat retaining key used for canceling or retaining heat, 63 is a reserved key used for timer cooking, and 64 is hot reheating for hot reheating. Key 65 is a key to use when adjusting the time, 66 is a key to use when adjusting the time, 67 is a new rice degree selecting key to select the freshness degree, 6
Reference numeral 8 is a menu selection key for selecting a menu, and 69 is a white rice cooking key for selecting a cooking season.

Regarding the key operation, when rice is cooked, the freshness degree is selected by the freshness degree selection key 67, the desired hardness is selected by the white rice cooking key 69, and the rice cooking key 61 is pressed. To keep warm, press the Off / Heat Keep key 62. To cook rice with the timer, press the reservation key 63, and then set the cooking time with the hour key 65 and the minute key 66.
Press. When hot reheating, press the hot reheat key 64 while keeping warm or pressing the OFF / HEAT key 62. When cooking menu rice, select the menu with the menu selection key 68 and press the rice cooking key 61.

[0007]

However, in such a conventional rice cooker, in the steaming process, additional cooking is performed by heating the rice at the bottom of the pan with a heating amount such that the rice on the bottom of the pan does not burn, so that cookable rice cannot be cooked. Had a problem.

A second problem is that it is not possible to set the burning function by the conventional key operation.

Therefore, a first object of the present invention is to provide a rice cooker provided with a rice-cooking control means for making a rice cook with an additional cooking pattern which can be burnt.

A second object of the present invention is to provide a rice cooker capable of setting a charring function by using only a conventionally used key.

[0011]

In order to achieve the above-mentioned first object, the present invention provides a pot for putting rice and water, heating means for heating the pot, and temperature detection for detecting the temperature of the pot. Means, a charring function setting means for setting the charring function, and among the plurality of charring patterns, the charring function setting means sets the charring pattern necessary for burning the rice to the output from the charging function setting means. And an additional rice pattern setting means, and a rice cooking control means for controlling the heating means with the output of the charring function setting means and the output of the temperature detecting means as inputs to cook the rice.
When the burning function is set by the burning function setting means, the rice cooking control means adds the additional cooking pattern setting means by the additional cooking pattern setting means in the steaming step after detecting the predetermined temperature by the temperature detecting means in the rice cooking step. It is designed so that the heating amount of the cooking pattern can be increased.

Further, in order to achieve the above second object,
According to the present invention, the burning function can be set only in the standby state by a key whose function is different depending on whether the standby state or not.

[0013]

According to the present invention, the rice cooking control means changes the heating means based on the rice cooking sequence changed so as to increase the heating amount of the additional cooking pattern when the user sets it by the burning function setting means. You can control and cook rice.

Further, the user can easily set the burning function by using the key having a different function depending on whether or not it is on standby.

[0015]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a block diagram of a rice cooker according to an embodiment of the present invention, in which 1 is a pan for putting rice and water, 2 is a heating means for heating the pan 1, and 3 is a bottom of the pan 1. Temperature detecting means for detecting the temperature, 4 is a burning function setting means for setting a burning function, and 5 is a corresponding cooker pattern for burning rice, corresponding to the output from the burning function setting means 4. An additional cooking pattern setting means 6 is a rice cooking control means which controls the heating means 2 with the output of the temperature detecting means 3 as an input to cook rice.

When the burning function is set by the burning function setting means 4, the rice cooking control means 6 detects the predetermined temperature by the temperature detecting means 3 in the rice cooking step, and then the additional cooking pattern in the steaming step. The pattern setting means 5 can be changed to increase the heating amount of the additional cooking pattern.

FIG. 2 is a sectional view of the rice cooker,
The temperature detecting means 3 for detecting the temperature of the pot 1 is composed of a temperature resistance element for converting the amount of change in temperature into a resistance value, is configured to move up and down, and is arranged in contact with the bottom surface of the pot 1. A control device (not shown) including a microcomputer including the additional cooking pattern setting means 5 and the rice cooking control means 6 is incorporated in the circuit board 21 and attached to the side surface of the main body 22.

In the rice cooker configured as described above,
The operation when cooking rice will be described. First of all,
Place rice and water as shown in FIG. 2 and start cooking rice. First of all, in order to make the rice absorb water, a pre-cooking process is performed in which the rice is kept at a certain temperature for a certain period of time. After that, through a cooking process of heating to the boiling point at the maximum heating amount, the amount of cooked rice is determined from the rate of temperature rise of the pan 1, and boiling is maintained at the heating amount according to the cooking amount. In the steaming process, additional cooking is performed with a heating amount of rice according to each amount of rice cooked a plurality of times during a fixed time.
Further, the control method is such that the heating means 2 is turned on in a cycle of 16 seconds.
-The duty control that is performed by the OFF time is used.

FIG. 3 shows the difference between the heating amount when the burning function is set and the normal case.

FIGS. 4A and 4B show the additional cooking patterns in the normal case and the setting of the burning function. FIG. 4A shows the normal case and FIG. 4B shows the case of the burning function setting. Here, the additional cooking pattern of this embodiment is divided into four stages.

When the scorching function is set by the scorching function setting means 4 to make the scorching, as shown in FIG. 3, the heating amount of the normal cooked rice is increased at the time of additional cooking in the steaming process to turn it on / off. Add duty ON time uniformly for 5 seconds and cook rice. For example, the heating amount of rice cooked for 4 seconds in the cycle of 16 seconds is put for 9 seconds to cook rice.

The amount of heat for additional cooking is determined by the amount of cooked rice (P in FIG. 4) determined from the result of determining the amount of cooked rice from the temperature rise rate of the pan in the cooking process.
Even if the amount of cooked rice is increased uniformly, the amount of cooked rice will not burn. Therefore, in order to evenly burn any amount of cooked rice, the range setting of the heating amount at the time of additional cooking is changed as shown in FIG. For example, when the heating amount for additional cooking is set to 7 seconds, the boiling maintenance heating amount (P in FIG. 4) is set from 8 seconds to 11 to set the heating amount for additional cooking to 7 seconds for 2nd and 3rd heating.
Change what was set as second time from 6 seconds to 10 seconds.

As described above, when the burning function is set in order to cook the charred rice, the heating amount during the normal additional cooking is increased uniformly or according to the total number in the steaming process. However, since there is a problem such as temperature fuse, the temperature detecting means 3 has a certain temperature (for example, 160
It is necessary to take measures such as heating the rice so that it does not exceed (℃).

The heating means 2 is used in the first embodiment.
The duty control is used to increase the heating amount of the cooked rice. However, if the induction heater (IH) is used, the induction heating frequency can be changed to increase the heating amount of the cooked rice.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to FIG.

As shown in FIG. 6, a rice cooking key 61 used for cooking rice, a cut / heat retaining key 62 used for canceling or retaining heat, a reserved key 63 used for timer cooking, and used for adjusting the time. When doing key 65, minute key
66, new rice degree selection key 6 used when selecting new rice degree
7. Menu selection key 68, the white rice cooking key 69 used when selecting the hardness is effective in the standby state, but in the conventional example, the hot reheat key 64 must not press the heat / heat retaining key. If it is not effective, the hot reheating key 64 on standby is used as the burnt function setting means 4.

Regarding the key operation, after pressing the hot reheat key 64 which is not effective during standby, the charcoal function is set by pressing the rice cooking key 61 to start the rice cooking. This can only be set while waiting.

The rice cooking operation is the same as in the first embodiment.

[0030]

As described above, according to the present invention, by providing the charring function setting means, the person who likes charring can cook charcoal, the person who prefers not to charcoal can use charcoal-free rice, etc. It is possible to provide a rice cooker that enables you to cook rice according to your needs.

Further, by using a key having a different function depending on whether it is in a standby state or not, it is possible to easily set a burning function. In addition, since it is not necessary to increase the number of new keys, the cost can be reduced and the layout of the operation surface can be improved.

[Brief description of drawings]

FIG. 1 is a main block diagram of a rice cooker according to a first embodiment of the present invention.

FIG. 2 is a sectional view of the rice cooker

FIG. 3 is a diagram showing the relationship between the heating amount of the rice cooker and time.

FIG. 4 is a diagram showing a pattern of heating amount when the rice cooker is additionally cooked.

FIG. 5 is a diagram showing the relationship between the temperature detected by the conventional rice cooker and time.

FIG. 6 is a view showing an operation unit of a general rice cooker.

[Explanation of symbols]

 1 pan 2 heating means 3 temperature detecting means 4 charring function setting means 5 additional cooking pattern setting means 6 rice cooking control means

Claims (2)

[Claims] 1. A pot for putting rice and water, a heating means for heating the pot, and a temperature detecting means for detecting the temperature of the pot,
A burner function setting means for setting the burner function and a plurality of additional cooker patterns are provided, and the additional cooker pattern necessary for burning the rice can be selected according to the output from the burner function setting means. The rice cooking pattern setting means and the rice cooking control means for controlling the heating means to cook rice by using the output of the burning function setting means and the output of the temperature detecting means as input are provided, and the rice cooking control means includes the burning function setting means. A rice cooker in which the heating amount of the additional cooking pattern in the steaming step after the predetermined temperature is detected by the temperature detecting means is increased when the burning function is set by the means. 2. The rice cooker according to claim 1, wherein the setting of the burning function can be set only during standby by a key having different functions depending on whether it is during standby.