JPH074313B2 - rice cooker - Google Patents

Description

TECHNICAL FIELD The present invention relates to a rice cooker used in a general household.

Conventional technology With conventional rice cookers, when rice is cooked, it is necessary to immerse it in water for a certain period of time as a preparation so that the rice does not absorb enough water. As a general method, there is provided a step of keeping the temperature at a constant water temperature and immersing it for a fixed time.

Problems to be Solved by the Invention In such a conventional rice cooker, as a method of adjusting the quality of cooked rice, there is only one of two choices, "pre-cooking step" or "pre-cooking step". There was a problem that the pre-cooking time could not be changed arbitrarily.

An object of the present invention is to provide a rice cooker that solves such problems.

Means for Solving the Problems The rice cooker of the present invention for solving the above problems is a container for containing rice and water, a heating means for heating the container, and a temperature detecting means for detecting the temperature in the container. A starting means for inputting the start of rice cooking; a storage means for storing a plurality of pre-cooking times; a setting means for changing the pre-cooking time stored in this storage means; Selecting means for selecting an arbitrary time from a plurality of pre-cooking times, timer means for receiving the output of the starting means and receiving the pre-cooking time selected by the selecting means from the storage means, and the timer means To perform the precooking step of rice cooking, receive the output of the temperature detecting means to control the heating means to perform the precooking of rice cooking, and then to the cooking step when the output from the timer means is received. System to shift Control means for controlling.

Operation With the above configuration, the time of the "pre-cooking process" of rice cooked stored in the storage means by the setting means can be changed to an arbitrary time. The cooking time can be shortened and the cooking time can be extended if it is soft.

Further, since the storage means stores a plurality of pre-cooking times, the pre-cooking time stored by the selecting means can be arbitrarily selected and rice can be cooked.

Embodiment One embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram of a rice cooker according to an embodiment of the present invention. In FIG. 1, 1 is a container for containing rice and water, 2 is heating means for heating the container 1,
3 is a temperature detecting means for detecting the temperature in the container 1, 4 is a starting means for inputting the start of cooking rice, 5 is a storage means for storing a plurality of pre-cooking times, and 6 is a storage means 5 for storing the same. Setting means for changing the pre-cooking time, 7 is selection means for selecting an arbitrary time from a plurality of pre-cooking times stored in the storage means 5, and 8 is the selecting means for receiving the output from the starting means 4. A timer means for receiving the pre-cooking time selected by 7 from the storage means 5 and clocking it, and a reference numeral 9 for receiving the output of the timer means 8 for executing the pre-cooking step of rice cooking and for receiving the output of the temperature detecting means 3. It is a control means for controlling to shift to the cooking process from time to time.

FIG. 2 shows a concrete circuit diagram of the rice cooker in one embodiment of the present invention. In FIG. 2, 10 is a container 1
, 11 is a relay for supplying electricity to the heater 10, 12 is a relay drive unit for driving the relay 11, 13 is a start key for inputting the start of rice cooking, and 14 is a setting for changing the time of pre-cooking time. A key, 15 is a selection key for selecting an arbitrary pre-cooking time from the storage means 5 which stores the pre-cooking time of rice, 16 is a thermistor for detecting the temperature of the container 1, 17 is a signal of the thermistor 16 A / A / D converter for D conversion, 18 is the start key 13, the setting key 14, the selection key 15,
An input unit for inputting the signal of the A / D converter 17, 19 is an output unit for opening and closing the contacts of the relay 11 to energize the heater 10, and 20 is a signal input from the input unit 18 The control unit 21 controls the output unit 19, and 21 is a microcomputer including the input unit 18, the output unit 19 and the control unit 20.

FIG. 3 shows a main part of a flow chart of the microcomputer 21, and the operation will be described based on this flow chart.

First, key input is performed in step 31, it is determined whether the key pressed in step 32 is the start key 13, and if it is not the start key 13, it is determined in step 33 whether the setting key 14 has been pressed and the key is pressed. If not, it is determined in step 37 whether the selection key 15 has been pressed. If not, the process returns to step 31. Steps 31 to 40 are repeated until the start key 13 is pressed. If the setting key 14 has been pressed in step 33, the process proceeds to step 34 and the precooking time is increased by one rank. Next, at step 35, it is judged whether or not this counter has exceeded a prescribed number, and if it has exceeded, at step 36 this counter is initialized. If not, return to step 31. If the selection key 15 has been pressed in step 37, the process proceeds to step 38 to increment the selection counter by one rank. Next, at step 39, it is judged whether or not this counter has exceeded a prescribed number, and if it has exceeded, at step 40 this counter is initialized. If not, return to step 31. If the start key 13 is pressed in step 32, the process proceeds to step 41, and in step 37, the temperature of the container 1 is input from the thermistor 16. If it is judged in step 42 whether or not the pre-cooking temperature is exceeded, in step 43 the power supply to the heater 10 is stopped. If not exceeded, the heater 10 is energized in step 44. Next, in step 45, the time of the timer means 8 is measured, and in step 46, the end of the precooking time is judged. If the end time has not been reached, the process returns to step 41 and steps 37 to 46 are repeated. If it is the end time of the precooking in step 46, in step 47, the process proceeds to the cooking process to cook rice.

With the above operation, you can change the precooking time arbitrarily by pressing the setting key 14, and by pressing the selection key 15, you can select any time from the stored multiple precooking times. You can cook your rice.

EFFECTS OF THE INVENTION As described above, according to the present invention, the "pre-cooking" can be performed according to the user's preference, such as when shortening the cooking time, when absorbing water before cooking, or when adjusting the quality of cooked rice. It becomes possible to cook rice by changing the time of "process" arbitrarily, and the usability is improved, and since the changed previous cooking time can be memorized and selected, it is possible to immediately set the desired rice cooked condition To provide a container.

[Brief description of drawings]

FIG. 1 is a block diagram of a rice cooker showing an embodiment of the present invention,
FIG. 2 is a specific circuit diagram of the rice cooker, and FIG. 3 is a flowchart of a microcomputer in the rice cooker. 1 ... container, 2 ... heating means, 3 ... temperature detecting means, 4
...... Starting means, 5 ...... storing means, 6 ...... setting means, 7 ...
... selection means, 8 ... timer means, 9 ... control means, 21 ...
… Microcomputer.

Claims (1)

[Claims] 1. A container for containing rice and water, a heating means for heating the container, a temperature detecting means for detecting the temperature in the container, a starting means for inputting the start of rice cooking, and a precooking time. A plurality of storage means, a setting means for changing the pre-cooking time stored in the storage means, and a selection means for selecting an arbitrary time from the plurality of pre-cooking times stored in the storage means. A timer means for receiving the output of the starting means and measuring the pre-cooking time selected by the selecting means from the storage means; and a step of pre-cooking rice for receiving the output of the timer means to detect the temperature. A rice cooker comprising: a control means for receiving the output of the means, controlling the heating means to execute pre-cooking of rice, and controlling the process to shift to the cooking step when the output from the timer means is received.