JPS6368050A - Cooking rice with electric cooker - Google Patents

Abstract

PURPOSE:To carry out cooking of rice under optimum condition corresponding to the amount of rice, by stopping the power supply to a heater with a controlling means when a temperature detecting means detects the temperature of the cooking pot reaching a specific level in the cooking of rice and detecting the lowering of temperature of the cooking pot by the use of a timer means and the temperature detecting means. CONSTITUTION:The cooking of rice is carried out under optimum condition corresponding to the amount of rice by the following method. The rice cooker is furnished with a cooking pot to hold rice and water, a heater to heat the cooking pot, a controlling means to control the ON and OFF of the heater, a timer means and a temperature detecting means to detect the temperature of the cooking pot. When the temperature detecting means detects that the temperature of the cooking pot reaches a prescribed temperature during the cooking of rice, the timer means is energized and the power supply to the heater is stopped with the controlling means. Thereafter, the lowering of the temperature of the cooking pot is detected by the timer means and the temperature detecting means.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application = 1 The present invention relates to a rice cooking method using an electric rice cooker that can cook rice according to the amount of rice to be cooked.

(b) Conventional technology It has been known that in order to cook delicious rice, it is necessary to change the rice cooking power depending on the amount of rice to be cooked. A rice cooker that integrates the elapsed time between two predetermined temperatures detected by a temperature detector that detects the temperature of a pot while power is being supplied, and controls the amount of electricity thereafter accordingly. ing.

However, during constant power supply, the temperature sensor was affected by heat from the heater, so it was not possible to accurately detect the temperature.

(c) Problems to be Solved by the Invention The present invention takes the above-mentioned drawbacks into account and makes it possible to accurately detect the amount of cooked rice.

(d) Means for Solving Problems In the rice cooking method of the electric rice cooker of the present invention, when the temperature detection means 2 to 3 detect that the temperature of the pot container has reached a predetermined temperature during rice cooking, the control means The rice is cooked in accordance with the amount of rice to be cooked by stopping the power supply to the heater, and then detecting the subsequent temperature drop of the pot container based on the timer means and the temperature detection means.

(e) Function Since the present invention is configured as described above, the temperature detection means can accurately detect the temperature drop state of the pot container together with the timer means without being affected by heat from the heater.

(f) Example Embodiments of the present invention will be described based on the drawings.

(1) is a pot container that stores rice and water, (2) is a heater that heats the pot container (1), and (3) is the heater (2).
The controller is programmed to control the energization state of the heater (2) as the rice cooking and warming progresses. (4) is a timer means provided to operate the control means (3) based on a predetermined process; (5) is a timer means that senses the temperature of the pot container (1) and operates the control means (3); It is a temperature detection means that changes the temperature.

Next, to explain the operation, when the minimum amount of rice and water is placed in the pot container (1) and the rice cooking start button (not shown) is set, the heater (2) is energized by the control means (3). Heat the pot container (1). At this time, the temperature at the start of rice cooking is To temperature Jf: (for example, (15 degrees). Eventually, as shown by the solid line in Figure 2, the temperature inside the pot container (1) becomes T1 temperature below the gelatinization temperature (approximately 60 degrees). (for example, about 50 degrees), the temperature detection means (5) that detects the temperature of the pot at this time changes the signal to the control means (3) and stops the heater (2) from generating heat. At the same time, the timer means (4) is activated.As the heater 2) stops generating heat, the temperature of the pot container (1) does not suddenly rise or fall, but the load (amount of rice and water) is small. After overrunning the T1 temperature, the temperature is gradually lowered. Then, the timer means (4) starts counting when the temperature T1 is reached, and after the time t1 has elapsed (up to about 3
00 seconds), the signals of the control means (3>.~) are changed to restart the heating of the heater (2).

Then, when the maximum amount of rice and water is placed in the pot container (1) and the rice cooking start button is set, the control means energizes the heater (2) to heat the pot container (1) in the same manner as described above.
When the temperature inside the pot reaches the above-mentioned T1 temperature as indicated by the dotted line in Figure 2, the heater (2) stops generating heat and the timer means (4) is activated. As the heater (2) stops generating heat, the temperature of the pot container decreases after overrunning the T1 temperature as described above, and before the timer count reaches the above-mentioned time t1 after the heater stops generating heat, the temperature of the pot container reaches the T2 temperature (approx. 49 to 49.5 degrees), that is, t2
At time (tx>t2), power supply to the heater (2) is restarted to start cooking rice.

When the amount of rice cooked is between the maximum and minimum amount, an arbitrary characteristic diagram between the minimum amount of rice cooked (solid line) and the maximum amount of rice cooked (dotted line) is drawn according to the amount.

As described above, the time required to drop from T1 temperature to T2 temperature differs depending on the amount of rice cooked (however, in the present invention,
If approximately 300 seconds have passed, T2 temperature is ignored)
For example, if the amount of electricity applied to the heater (2) after this is controlled depending on the length of this time, rice can be cooked in accordance with the amount of rice to be cooked.

When the power supply to the heater (2) is cut off, the temperature detection means (5) is not thermally affected by the heater (2), so it can accurately detect the falling temperature of the pot container (1). The amount of cooked rice can be detected accurately.

(G) Effects of the Invention As described above, the present invention allows the control means to stop energizing the heater when the temperature detection means detects that the temperature of the pot container reaches a predetermined temperature during rice cooking, and then Since rice is cooked in accordance with the amount of cooked rice by detecting the temperature drop of the pot container based on the timer means and the temperature detection means, the amount of cooked rice can be accurately detected. Moreover, since the period during which power is not supplied to the heater is set not to exceed a predetermined time, cooking rice does not take longer than necessary.

[Brief explanation of the drawing]

FIG. 1 is a block tire duram of the rice cooking method using the electric rice cooker of the present invention, and FIG. 2 is a characteristic diagram showing the relationship between the temperature of the pot container and time. (1>...pot container, (2)...heater, (3)...
...Control means, (4)...Timer means, (5)...
・Temperature detection means. Applicant: Sanyo Electric Co., Ltd. and one other agent Patent attorney: Kuratsugu Nishino (one other person) Figure 1 Figure 2 Time-

Claims (2)

[Claims] (1) A pot container for storing rice and water, a heater for heating the pot container, a control means for turning on and off the heater, a timer means, and a temperature detection means for detecting the temperature of the pot container. When the temperature detection means detects that the temperature of the pot has reached a predetermined temperature during cooking, the timer means is activated and the control means stops energizing the heater, and then the temperature of the pot is lowered. A rice cooking method using an electric rice cooker, characterized in that rice is cooked according to the amount of rice to be cooked by detecting the situation based on a timer means and a temperature detection means. (2) The method of cooking rice using an electric rice cooker as set forth in claim 1, wherein the period during which power is not supplied to the heater is set not to exceed a predetermined time.