JPS63117717A - Rice cooker - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rice cooker that is capable of not only normal rice cooking but also quick cooking that is controlled to shorten the rice cooking time.

Conventional technology Recently, the rate of microcontrollers being installed in rice cookers has become high, and they have many menus and rice cooking modes to meet the required applications.On the other hand, as a social environment, the number of housewives and workers such as heart timers is increasing. There is a tendency for quick-cooking rice cooking mode to become the best choice because it is desired to make the time required for housework more efficient, and also to shorten the time required to cook rice in order to cope with unexpected guests.

Problems to be Solved by the Invention With conventional rice cookers, it is difficult to shorten rice cooking time by significantly increasing the maximum rated power due to household power consumption.

Additionally, in order to add a separate quick-cooking rice cooking program to the regular rice cooking program, it was necessary to increase the capacity of the microcomputer.

Means for Solving the Problems The present invention provides that when quick-cooking rice is selected, if the output of the rice cooking amount determining means is less than the full amount, a heating program with one or more stages of rice cooking is selected for that output, and the rice is cooked. A heating amount control means for quick-cooking rice is provided to prevent the maximum rated power from increasing, and the heating program for normal rice cooking is shared with the heating program for quick-cooking rice to prevent the capacity of the microcomputer from increasing. be.

Function In the present invention, the heating control means for quick-cooking rice that selects a heating program with a large amount of cooked rice at or above the -stage performs a quick-cooking function like a rice cooker with a large rated power when the amount of cooked rice is less than the full amount. By sharing the heating program for normal rice cooking and quick rice cooking, it acts like a control means using a large-capacity microcomputer.

Embodiment FIG. 1 is a sectional view showing an embodiment of the rice cooker of the present invention. In the figure, reference numeral 1 denotes an outer lid to which a heat sink 3 with a lid heater 4 attached to the back is fixed via a lid ring 2. 3
A is attached to the center of the heat radiating plate 3 with an H bolt, and an inner lid 5 is attached via a bush 6. Reference numeral 7 is a main body ring to which an inner container 8 is attached, around which a body heater (not shown) is wrapped, and a heat insulating material 9 is provided around the outer periphery.A main body is constituted by an outer frame 10 and a bottom 11. Further, a heating plate 12 is provided at the inner bottom of the inner container 8, and an inner pot 13 is removably mounted thereon. Further, reference numeral 16 is a control section, which includes a microcomputer having a rice cooking amount determining means, a heating control means, etc., which will be described later. A hinge 14 rotatably closes the upper part of the main body of the outer lid 1, and the locking portion 15 locks the outer lid 1.

Further, the sequence of rice cooking in this embodiment will be explained as a flowchart in FIG. 2. When cooking rice quickly, preheating is omitted, and when the amount of cooked rice is determined to be a small amount, the medium amount heating pattern is executed, and when the amount of rice cooked is determined to be medium amount, the full amount heating pattern is executed, and from the second cooking process to the keeping warm process. Transition.

In addition, 1) the heating pattern program for normal rice cooking is incorporated into the microcomputer program so that it can also be used for quick rice cooking.

The operation of the above configuration will be explained.

During quick-cooking rice cooking, when rice cooking starts, the heating plate 12 is energized, and a temperature sensor (not shown) measures the temperature rise of the inner pot 13 to determine the amount of cooked rice.

In the case of a small amount, the rice is heated according to the medium amount pattern, and when the rice reaches the cooking completion temperature, it moves to the twice-cooking process, and then moves to the warming process. If the amount of cooked rice is determined to be medium, the full amount heating pattern is executed, and when the rice reaches the completion temperature, it moves to the second cooking process.
After that, the process moves to the heat retention process. If the amount of cooked rice is determined to be full, the full amount heating pattern is executed, and the process moves to the twice-cooking process and the warming process.

Next, FIG. 3 shows a heating pattern, and with reference to FIG. 3, a description will be given of normal rice cooking that is not quick cooking. When rice cooking starts, a preheating process is performed for a certain period of time to promote water absorption in the rice, and then a post-cooked rice amount determination is performed. If the amount of cooked rice is determined to be a small amount, use the small amount heating pattern, if the amount is medium amount, use the medium amount heating pattern, and if the rice amount is completed? Each of the 12I bin heating patterns is executed, and when the rice reaches the cooking completion temperature, the process moves to the twice-cooking process and then to the warming process.

As described above, according to this embodiment, the heating pattern program for normal rice cooking, which is not quick cooking, is used to create a quick cooking rice cooking program that executes a heating pattern that increases the amount of rice cooked by one step or more based on the rice cooking amount determination output. This makes it possible to shorten the cooking time for small or medium amounts of rice, and since the heating program is shared between quick-cooking rice and normal rice cooking, the number of programs can be reduced and the microcomputer capacity can be reduced.

In this embodiment, a sequence in which the full heating pattern is executed both when the amount of cooked rice is determined to be a small amount and when the amount of rice to be cooked is a medium amount has the same effect.

Effects of the Invention As described above, in the present invention, a heating pattern for normal rice cooking that is not quick cooking and a heating pattern for quick cooking are shared, and a heating pattern that increases the amount of rice cooked by one step or more is executed in response to the output of rice cooking amount determination. By setting the rice cooking mode, the cooking time can be shortened without increasing the maximum rated power, and the number of programs can be reduced, which has the effect of reducing the microcomputer capacity.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a rice cooker showing one embodiment of the present invention;
The figure is a flowchart showing the same operation, and Figure 3 is a diagram of the same normal heating pattern, where (a) shows when cooking a small amount of rice, (b) shows when cooking a medium amount of rice, and (c) shows when cooking a full amount of rice. . 12... Heating plate, 13... Inner pot, 16... Control section.

Claims (2)

[Claims] (1) Depending on the rice cooking amount determining means and its output, for example, a small amount,
It has heating amount control means for normal rice cooking that selects one of a plurality of heating programs such as medium amount or full amount, and when selecting quick cooking to shorten the rice cooking time, the output of the rice cooking amount determining means is set to be full amount. A rice cooker characterized by being provided with a heating amount control means for quick-cooking rice that selects a heating program that increases the amount of rice cooked by one step or more relative to the output and completes the rice cooking when the amount of rice is less than the output. (2) The rice cooker according to claim 1, characterized in that the heating amount control means for rice cooking is used in common with the heating program for normal rice cooking as well as the heating program for quick cooking rice.