JPH0349248B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rice cooker for general household use.

Conventional technology Conventionally, rice was heated and absorbed at a predetermined temperature (approximately 40℃) for a fixed period of time, below the gelatinization temperature of rice, so that rice could be cooked without a core even if rice was started immediately after washing. There are known rice cookers that cook rice after cooking (hereinafter referred to as pre-cooking). When this type of rice cooker is combined with a timer to perform timer cooking, the user has to select whether or not to pre-cook the rice at a constant temperature for a certain period of time.

Problems to be Solved by the Invention In such conventional rice cookers, when cooking with a timer, either pre-cooking is performed or not, so when pre-cooking is performed, if the timer time is long, the Even though the rice has absorbed enough water, pre-cooking requires further heating and water absorption, which has the disadvantage that the cooked rice becomes too soft.On the other hand, if you omit pre-cooking, the timer If the time is short, the rice will not absorb enough water when the timer is activated, causing problems such as poor quality of the rice.

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

Means for Solving the Problems In order to solve the above problems, the present invention provides a time comparison means for comparing the timer time set by the timer time setting means with a plurality of predetermined times, and an output of the time comparison means. Pre-cooking means for varying the pre-cooking temperature according to the length of the timer time.

Effect By providing the above pre-cooking means, the pre-cooking temperature changes according to the length of the timer time, so regardless of the length of the timer time, the water absorption rate of rice at the end of pre-cooking can be adjusted. can be kept constant,
As a result, you can always cook delicious rice.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings. FIG. 1 shows a block diagram of a rice cooker according to an embodiment of the present invention, in which 1 is a commercial power supply, 2 is a rice cooker heater 3, and a relay 4 consisting of a relay contact 4a and a relay coil 4b. Rice cooking means; 5, timer time setting means for setting a timer time until rice cooking starts or ends; 6, time comparison means for comparing the timer time set by the timer time setting means 5 with a plurality of predetermined times; 7; Reference numeral 8 indicates a pre-cooking means for varying the pre-cooking temperature according to the length of the timer time based on the output of the time comparison means 6, and a control means 8 for controlling the rice cooking means 2 to cook rice.

Next, the operation of the above configuration will be explained based on the flowchart of FIG. When the timer time (T) until the start of rice cooking is set by the timer setting means 5 as shown in step 1, the time comparison means 6 compares the set timer time with a plurality of predetermined times (here, 0.5 hours, 1 hour). . In this example, if the timer time is less than 0.5 hours, if the pre-cooking temperature is 40°C and 0.5 hours or more but less than 1 hour, as shown in step 2,
As shown in step 3, if the pre-cooking temperature is 35℃ for 1 hour or more but less than 2 hours, as shown in step 4, if the pre-cooking temperature is 30℃ for 2 hours or more,
As shown in step 5, the control means 8 controls energization of the relay coil 4b and opens and closes the relay contact 4a so that the pre-cooking temperature becomes 25°C, so that the voltage of the commercial power supply 1 is applied to the rice cooking heater 3. The heating of the rice cooking heater 3 is controlled accordingly. Figure 3 shows the heating pattern of rice when the pre-cooking temperature changes.

Effects of the Invention As described above, according to the present invention, the pre-cooking temperature changes in several stages depending on the length of the timer time set by the user, so that the rice is always cooked regardless of the length of the timer time. Optimal water absorption will occur,
You can always cook fluffy and delicious rice.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a rice cooker showing an embodiment of the present invention, FIG. 2 is a flowchart of the rice cooker, and FIG. 3 is a diagram showing a rice heating pattern in the rice cooker. 2...Rice cooking means, 5...Timer setting means, 6...
...Time comparing means, 7...Pre-cooking means, 8...Controlling means.

Claims (1)

[Claims] 1. Rice cooking means consisting of a rice cooking heater and a rice cooking heater control element, a timer time setting means for setting a timer time until rice cooking starts or ends, and a timer time set by the timer time setting means and a plurality of predetermined times. a pre-cooking means for varying the pre-cooking temperature according to the length of the timer time using the output of the time comparison means;
A rice cooker comprising a control means for controlling the rice cooking means to cook rice.