JPS6192635A - Jar rice cooker - Google Patents

Abstract

(57) [Summary] 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 jar rice cooker that can detect the presence or absence of a pot and stop the rice cooking operation and warming operation. In the jar rice cooker, when the pot runs out during the rice cooking operation, it shifts to the warming operation, and even if the pot runs out during the warming operation, the warming operation continues.

In conventional jar rice cookers like this, which are designed to prevent electricity from being turned on when cooking rice without a pot, if the pot is accidentally lifted even momentarily during cooking, the rice goes into a keep-warm mode, and the rice is cooked using the electricity kept warm. As a result, the rice is not cooked. In addition, if you forget to turn off the power and remove the pot during the heat-keeping operation, the heat-keeping will continue without the pot, resulting in a waste of electricity.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and provides a jar rice cooker that can stop its operation only when the pot is not used for a certain period of time during rice cooking or warming operation. SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a rice cooking means for performing a rice cooking operation, a rice cooking switch for inputting the start of the rice cooking operation, a warming means for performing a warming operation, and a heating means for keeping the rice warm. A heat retention switch for inputting the start of operation, a pot detection means for detecting the presence or absence of a pot, and a no-pot signal delay means for inputting the signal of the pot detection means and delaying the signal of the pot detection means when the pot runs out. ,
The output of the no-pot signal delaying means is input, and when the pot is removed for a certain period of time during rice cooking or warming operation, the rice cooking means or warming means is controlled to stop the operation, and while the operation is stopped, The rice cooker is equipped with a control means for controlling the rice cooking means or the warming means to start the rice cooking operation or the warming operation when the rice cooking switch or the warming switch is turned on after the pot is put in the rice cooker.

According to this configuration, if the pot is removed during the rice cooking operation or the warming operation, the operation is stopped after being opened for a certain period of time. This eliminates the problem of the warming operation stopping even if the pot is lifted momentarily when transferring it to a bowl.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. 1 is a rice cooking switch for inputting the start of the rice cooking operation, 2 is a warming switch for inputting the start of the warming operation,
3 is a pot detection means for detecting the presence or absence of a pot; 4 is a pot detection means 3;
It is a no-pot signal delaying means which receives the output of the pot and delays the signal when the pot runs out (6 seconds in this example), and 5 is a rice cooking switch 1, a heat retention switch 2, and a no-pot signal delaying means 4. This is a control means which takes the output of the input as an input and controls the rice cooking means 6 which performs the rice cooking operation and the heat retention means 7 which performs the heat keeping operation according to the input state.

FIG. 2 is a circuit diagram showing a specific configuration of this embodiment.

8 is an AC power supply, 9 is a rice cooking heater, 10 is a relay composed of a coil 10a and a contact 10b, and 11 is a relay drive unit.This relay drive unit 11 cooks rice by energizing the relay coil 10b and closing the contact 10b. Miko's rice cooking heater 9 that causes the heater 9 to generate heat, a relay 10, and a relay drive unit 1
1 constitutes a rice cooking means 6. 12 is a heat-retaining heater, 13 is a triac, and 14 is a triac drive unit. The triac drive unit 14 controls the triac 13, and the triac 13 controls the energization of the heat-retaining heater 12. This insulation heater 12, triac 1
3. The heat retaining means 7 is constituted by the triac drive section 14. Reference numeral 15 denotes a microcomputer, which includes an input section 15a for inputting the states of the rice cooking switch 1, the heat retention switch 2, and the pot detection means (pot switch in the embodiment) 3, a storage section 15b storing the rice cooking program, data, etc. It is comprised of an arithmetic control section 15C that performs comparison operations between the data in the input section 16& and the storage section 15b, and an output section 16b that outputs signals to the rice cooking means 6 and the warming means 7 as a result of the comparison operations.

The operation of the above configuration will now be described.

FIG. 3 shows the main part of a flowchart under the control of the microcomputer 16.

Generally, a user places a pot containing washed rice and water into the rice cooker. At this time, if it is detected in step 16 that the pot switch 3 is closed, the process moves to step 17. If the user closes the rice cooking switch 1, it is determined in step 17 that rice cooking has started, and the process moves to the rice cooking operation in step 19&; on the other hand, if the user closes the keep warm switch 2, it is determined in step 18 that keeping warm has started, and the process proceeds to the keep warm operation in step 19b. Move. Since the pot switch 3 is always closed unless the user takes the pot, the operation continues as a result of the determination in step 20. However, if the pot is removed during the rice cooking operation or the warming operation, the pot switch 3 detects in step 20 that the pot is empty, and the process moves to step 21. In this step 21, the no-pot signal delay means 4 determines whether 5 seconds or more have passed since the pot was removed.
If it is less than 6 seconds, the operation will continue;
If more than a second has elapsed, the process moves to step 22, the operation is stopped, and the process returns to step 16.

Effects of the Invention As described above, according to the present invention, if the pot is removed during the rice cooking operation or the warming operation, the operation is stopped after being opened for a certain period of time. For example, when transferring rice from a pot to a bowl with a rice scoop, even if the pot is lifted momentarily, this will prevent the heat-retaining operation from stopping. Because of this, the rice cooking heater and the warming heater no longer generate heat when there is no pot, which saves energy and improves safety. On the other hand, when you put a pot in the pot and press the rice cooker switch or keep warm switch, it immediately accepts the switch signal and starts cooking or keeping warm, making it an easy-to-use jar rice cooker that does not cause any inconvenience. 0 that can provide

[Brief explanation of drawings]

FIG. 1 is a block diagram of the main parts of a jar rice cooker showing one embodiment of the present invention, FIG. 2 is a specific circuit diagram thereof, and FIG. 3 is a flowchart of the main parts. 1...Rice cooking switch, 2...Warming switch, 3...Pot detection means, 4...Potless signal delay means, 6...... Control means, 6...
・Means for cooking rice, 7... Means for keeping warm. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 3

Claims (1)

[Claims] A rice cooking means for performing a rice cooking operation, a rice cooking switch for inputting the start of the rice cooking operation, a warming means for performing the warming operation, a warming switch for inputting the start of the warming operation, a pot detection means for detecting the presence or absence of a pot; A no-pot signal delay means which inputs the signal of the pot detection means and delays the signal of the pot detection means when the pot runs out, and an output of this no-pot signal delay means which inputs the signal of the pot detection means and delays the signal of the pot detection means when the pot is out. When the pot is removed, the rice cooking means or the warming means is controlled and the operation is stopped; on the other hand, when the pot is put in while the operation is stopped and the rice cooking switch or the warming switch is input, the rice cooking means or the warming means is controlled. 1. A jar rice cooker comprising: a control means for controlling the rice cooking operation or for starting the rice cooking operation or the warming operation.