JP2005087275A - rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To open a lid during rice cooking in a rice cooker that drives a heating means for heating a pot by inputting outputs of a pot temperature detecting means for detecting a pot temperature and a lid temperature detecting means for detecting a lid temperature. Even if it is possible to cook rice, it is safe because heating is stopped when the lid is temporarily opened, and if it is closed within a predetermined time, rice can be cooked normally.
[Solution] A pot 1 containing rice and water is heated by a heating means 2, the temperature of the pot 1 is detected by a pot temperature detecting means 3, and the temperature of steam generated by heating water in the pot 1 is covered. The temperature detecting means 4 detects the opening / closing of the lid by the lid opening / closing detecting means 6, and the heating control means 5 is controlled by the control means 7 for inputting the output of the pan temperature detecting means 3 and the lid temperature detecting means 4. The control means 7 is configured to stop the heating means 2 for a predetermined time when the lid open / close detection means 6 determines that the lid is open, and then control the heating means 2 based on the output of the pan temperature detection means 3.
[Selection] Figure 1

Description

  The present invention relates to a rice cooker that inputs the outputs of a pot temperature detecting means for detecting the temperature of a pot and a lid temperature detecting means for detecting the temperature of the lid and drives a heating means for heating the pot.

  Conventionally, this type of rice cooker has been configured as shown in FIG. Hereinafter, the configuration will be described.

  As shown in FIG. 6, the pan 30 is detachably accommodated in the rice cooker body 32, and the pan 30 is heated by the heating means 31 to perform rice cooking and heat insulation. The pan temperature detecting means 33 detects the temperature of the pan 30. A lid 34 is provided on the upper portion of the rice cooker main body 32 so as to be openable and closable. A lid temperature detecting means 35 for detecting the temperature of the lid 34 is provided in the lid 34.

  The output of the pan temperature detection means 33 and the output of the lid temperature detection means 35 are input to the control means 43. The control means 43 simultaneously includes a timer 36, a first storage means 37, a second storage means 38, and a cooking process storage. It inputs from the means 40 etc., controls the energization amount of the heating means 31 via the heating control means 39, and is comprised so that the temperature of the pan 30 may be controlled to an appropriate temperature at the time of rice cooking and heat retention. In addition, 41 is a start switch and 42 is an abnormality notification means.

In the above configuration, when the temperature detected by the pan temperature detecting means 33 is lower than T1 but the temperature detected by the lid temperature detecting means 35 is higher than T0 before the time counted by the timer 36 or t0, the control means 43 Controls the heating control means 39 to stop the heating, and the abnormality notifying means 42 notifies the abnormality, so that the pan 30 can be prevented from rising abnormally and the user is abnormal. Since it recognizes, it can prevent using repeatedly in a dangerous state (for example, refer patent document 1).
JP-A-5-337037

  However, in such a conventional configuration, if the lid 34 is open, the boiling temperature cannot be detected by the lid temperature detection means 35 that detects the temperature of the steam generated by heating the water inside the pan 34, as it is. Cooking rice was stopped and the cooked rice was wasted.

  The present invention solves the above-described conventional problems, and even if the lid is opened during cooking, it is possible to cook rice, and when the lid is temporarily opened, heating is stopped safely and then closed within a predetermined time. The case is aimed at being able to cook rice normally.

  In order to achieve the above object, the present invention heats a pan containing rice and water by heating means, detects the temperature of the pan by the pan temperature detecting means, and the temperature of the steam generated by heating the water inside the pan. Is detected by the lid temperature detecting means, the heating means is driven by the heating control means, and the lid opening / closing detecting means detects the opening and closing of the lid that covers the upper part of the pan so as to be freely opened and closed, and the outputs of the pan temperature detecting means and the lid temperature detecting means The control means is configured to control the heating control means by the control means, and the control means stops the heating means for a predetermined time when it is determined by the lid open / close detection means that the lid is open, and then the output of the pan temperature detection means Is configured to control the heating means.

  As a result, if it is determined by the lid open / close detection means that the lid is open, boiling cannot be detected as it is, so the heating means is stopped for a predetermined time and the lid is closed. If not, the rice can be cooked with heating controlled by the output of the pan temperature detecting means without using the lid temperature detecting means.

  The present invention can cook rice even if the lid is opened during cooking, and since it stops heating when the lid is temporarily opened, it will return to normal rice when it is closed within a predetermined time. It is possible to reduce the deterioration of the finish.

  1st invention is the temperature of the vapor | steam which generate | occur | produces when the pot which puts rice and water, the heating means which heats the said pot, the pot temperature detection means which detects the temperature of the said pot, and the water inside the said pot is heated. A lid temperature detecting means for detecting the lid, a heating control means for driving the heating means, a lid opening / closing detecting means for detecting opening / closing of the lid covering the upper part of the pan so as to be freely opened and closed, the pan temperature detecting means and the lid temperature And a control means for controlling the heating control means by inputting the output of the detection means, and the control means stops the heating means for a predetermined time when the lid open / close detection means determines that the lid is open. Then, the heating means is controlled by the output of the pan temperature detecting means, and if it is determined by the lid open / close detecting means that the lid is open, boiling detection cannot be performed as it is, and heating is performed for a predetermined time. Stop means If the lid is not closed even after waiting for a predetermined time, you can cook rice by heating control with the output of the pan temperature detection means without using the lid temperature detection means, When the lid is temporarily opened, the heating is stopped, so that it is safe. After that, when the lid is closed within a predetermined time, the cooked rice is returned to normal cooking so that the reduction of the finished rice can be reduced.

  According to a second invention, there is provided display means for displaying an open / closed state of the lid in the first invention, and the control means displays on the display means when the lid open / close detection means determines that the lid is open. And the heating means is controlled by the output of the pan temperature detecting means. When the lid opening / closing detecting means determines that the lid is open, the display means displays and the lid temperature detecting means Rice can be cooked by controlling the heating with the output of the pan temperature detection means without using it.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
As shown in FIG. 1 and FIG. 2, the pot 1 contains rice and water, and the pot 1 is heated from the bottom by the heating means 2. The pan temperature detecting means 3 contacts the bottom surface of the pan 1 and detects the temperature of the pan 1. The lid 22 has an air layer inside, is provided so as to be openable and closable above the pan 1, is provided with lid temperature detecting means 4 for detecting the temperature of the lid 22, and the temperature of steam generated by heating the water inside the pan 1. Is to be detected. The lid opening / closing detection means 6 detects opening / closing of the lid 22. The control circuit 23 incorporates the display means 10 and a microcomputer.

  The heating control means 5 drives the heating means 2. The controller 7 is configured to stop the heating unit 2 for a predetermined time when the lid opening / closing detection unit 6 determines that the lid 22 is open, and then control the heating unit 2 based on the output of the pan temperature detection unit 3. ing.

  The operation of the above configuration will be described with reference to FIG. After the start of rice cooking, the pan temperature detecting means 3 and the lid temperature detecting means 4 are used in step 70 to shift to the normal rice cooking mode in which the normal rice cooking process is executed and control the heating. In step 71, it is determined whether or not the lid 22 is opened by the lid opening / closing detection means 6, and if it is not opened, it is determined in step 72 whether rice cooking has been completed, and steps 70 to 72 are repeated until it is completed. If it is determined in step 72 that rice cooking has been completed, the process proceeds to step 73 and rice cooking is terminated.

  If it is determined in step 71 that the lid 22 is open during cooking, time is measured in step 74 and the heating operation is temporarily stopped. If the lid | cover 22 is closed by step 75, it will return to step 72 and will perform normal rice cooking mode. If the time since the opening of the lid 22 in step 76 has passed 10 minutes, the process proceeds to step 77, the process proceeds to the one-sensor mode in which the rice is cooked without using the lid temperature detecting means 4, and the step is performed if the cooking is completed. 73.

  From these steps, if the lid opening / closing detection means 6 determines that the lid 22 is open, the heating means 2 is stopped for a predetermined time, the lid 22 is closed, and the lid 22 is closed even after waiting for a predetermined time. If it is not possible, the heating means 2 is heated and controlled by the output of the pan temperature detection means 3 without using the lid temperature detection means 4 so that rice can be cooked and cooked.

  As described above, in the present embodiment, rice can be cooked even if the lid 22 is opened during cooking, and heating is stopped when the lid 22 is temporarily opened, so that it is safe and then closed within a predetermined time. If this happens, it will return to normal cooking so that the reduction of the finished rice can be reduced.

(Embodiment 2)
As shown in FIG. 4, the display unit 10 displays the open / closed state of the lid 22 of the lid open / close detection unit 6, and the control unit 11 determines that the lid 22 is open by the lid open / close detection unit 6. Then, the display means 10 is displayed, and the heating means 2 is controlled by the output of the pan temperature detecting means 3. Other configurations are the same as those of the first embodiment, and the same reference numerals are given and description thereof is omitted.

  The operation of the above configuration will be described with reference to FIG. After the start of rice cooking, the pan temperature detecting means 3 and the lid temperature detecting means 4 are used in step 70 to shift to the normal rice cooking mode in which the normal rice cooking process is executed and control the heating. In step 71, it is determined whether or not the lid 22 is opened by the lid opening / closing detection means 6, and if it is not opened, it is determined in step 72 whether rice cooking has been completed, and steps 70 to 72 are repeated until it is completed. If it is determined in step 72 that rice cooking has been completed, the process proceeds to step 73 and rice cooking is terminated.

  If it is determined in step 71 that the lid 22 is open during cooking, the time is measured in step 80 while the normal cooking mode is continuously executed. If the lid 22 is closed in step 81, the process returns to step 72 to execute the normal rice cooking mode. If the time since opening of the lid 22 in step 82 has passed 10 minutes, the process proceeds to step 83, the process proceeds to the one-sensor mode in which rice is cooked without using the lid temperature detecting means 4, and if rice cooking is completed, the process proceeds to step 83. 73. In step 82, if the time from the opening of the lid 22 is within 10 minutes, the user is informed that the lid 2 is open.

  From these steps, if it is determined by the lid opening / closing detection means 6 that the lid 22 is open, it waits for the lid 22 to be closed for a predetermined time while executing the normal rice cooking mode. At this time, the display means 10 prompts the user. Display a caution. If the lid 22 is not closed even after waiting for a predetermined time, the rice cooking can be performed and cooked by controlling the heating means 2 with the output of the pan temperature detecting means 3 without using the lid temperature detecting means 4. .

  As mentioned above, in this Embodiment, even if the lid | cover 22 opens during rice cooking, rice cooking is possible, and if the lid | cover 22 is temporarily opened and closed within predetermined time, normal rice cooking can be performed.

  As described above, the rice cooker according to the present invention can cook rice even if the lid is opened during cooking, and since it stops heating when the lid is temporarily opened, it detects the temperature of the pan. It is useful as a rice cooker that drives the heating means for heating the pot by inputting the outputs of the pot temperature detecting means and the lid temperature detecting means for detecting the temperature of the lid.

The block diagram of the rice cooker in the 1st Embodiment of this invention. Cross section of the rice cooker Main part operation flowchart of the rice cooker The block diagram of the rice cooker in the 2nd Embodiment of this invention. Main part operation flowchart of the rice cooker System diagram of conventional rice cooker

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pan 2 Heating means 3 Pan temperature detection means 4 Lid temperature detection means 5 Heating control means 6 Lid open / close detection means 7 Control means 22 Lid

Claims (2)

A pot for putting rice and water, a heating means for heating the pot, a pot temperature detecting means for detecting the temperature of the pot, and a lid temperature detection for detecting the temperature of steam generated by heating the water in the pot Means, heating control means for driving the heating means, lid opening / closing detection means for detecting opening / closing of the lid that covers the upper part of the pan so as to be freely opened / closed, and outputs of the pan temperature detection means and the lid temperature detection means Control means for controlling the heating control means, and the control means stops the heating means for a predetermined time when the lid open / close detection means determines that the lid is open, and then detects the pan temperature. A rice cooker configured to control the heating means according to the output of the means. Display means for displaying the open / closed state of the lid, and when the control means determines that the lid is open by the lid open / close detection means, the control means displays on the display means, and the heating means is controlled by the output of the pan temperature detection means. The rice cooker of Claim 1 comprised so that it might control.

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