JPH06102053B2 - rice cooker - Google Patents

Description

TECHNICAL FIELD The present invention relates to a rice cooker used at home.

2. Description of the Related Art In recent years, a rice cooker using a microcomputer is generally used, and in such a rice cooker, different rice cooking processes are stored in each of a plurality of rice cooking menus such as white rice, brown rice, porridge, and rice. The rice is cooked by controlling the heater according to the rice cooking process.

FIG. 3 shows a block diagram of a conventional rice cooker, and FIG. 4 shows an example of porridge in the rice cooking process in the conventional rice cooker.

In FIG. 3, 11 is a container 1b for storing rice and a lid for the container 1b.
1a and rice cooking means consisting of a heater 1c for heating the container 1b, 12 is a menu selection switch for selecting multiple rice cooking menus of white rice, brown rice and porridge, 13 is a start switch for starting rice cooking, 14 is multiple It is a storage means that stores the rice cooking process such as water absorption, heating, boiling maintenance, and steaming for each rice cooking menu. Reference numeral 15a is a temperature detecting means for measuring the temperature θ of the container of the rice cooking means 11, and 15b is temperature detecting means for measuring the temperature φ of the lid 11a of the rice cooking means 11.

16 receives the input of the menu selection switch 12, the start switch 13, the storage means 14, and the temperature detection means 15, and then the rice cooking means 11
Control means for controlling the energization of the heater 11c to cook rice, and 17 is a display means for receiving the output of the control means 16 and displaying the rice cooking process, the rice cooking menu, and the like.

In the conventional rice cooking process of porridge of FIG. 4, the water absorbing process is a process of keeping the water soaked in rice at a temperature of lukewarm water to allow the rice to absorb sufficient water, and the heating process is the heater of the rice cooking means 11.
In the process of heating the water by maximizing the energization to 11c and the medium-heat process, the energization amount to the heater 11c of the rice cooking means 11 is adjusted by the output of the temperature detecting means 15a and 15b, and the container 1 of the rice cooking means 11 is adjusted.
This is a process of boiling water while limiting heating to 1b.

In the boiling maintaining step, the amount of electricity supplied to the heater 11c of the rice cooking means 11 is adjusted by the outputs of the temperature detecting means 15a and 15b, and the step of boiling water for a predetermined time to boil the porridge, the steaming step is attached to the lid 11a, etc. This is a step of evaporating excess water.

In a conventional rice cooker, rice for porridge is cooked based on the above rice cooking process.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the conventional rice cooker as described above, when rice is cooked, the rice is first heated to the maximum heat amount to bring it to a boil, and then the heat is added to maintain the boiling. In other rice cooking menus, the rice is first cooked with the maximum amount of heat to bring it to a boil, and then boiled in the boiling maintaining process to continue cooking rice. However, in the conventional rice cooking process, when the process of heating from the maximum amount of heat to bring it to a boiling state is moved to the boiling maintaining process, bubbles are generated due to boiling water and reach near the lid 11a of the rice cooker container 11b. There has been a problem that while the bubbles continue to boil in the boiling maintaining step, the bubbles may spill out from the vapor vent hole opened in the lid 11a of the container 11b.

The present invention has been made in view of the above problems, and an object thereof is to prevent bubbles from spilling over.

Means for Solving the Problems In order to solve the above problems, the present invention provides a rice cooker configured to cook rice, which is composed of a container for storing rice, a lid of the container, a heater for heating the container, and the like. Start switch, temperature detecting means for measuring the container temperature θ and the lid temperature φ of the rice cooking means, the start switch, and the input of the temperature detecting means to the heater of the rice cooking means. In the control means for controlling the energization of the rice to cook the rice and in the step of boiling water in the rice cooking process, the temperature φ of the lid detected by the temperature detecting means is a predetermined temperature φ.
When the temperature exceeds 1, the control means controls the energization of the heater of the rice cooking means to limit the heating of the container of the rice cooking means to a predetermined heat amount W1, and then the temperature φ of the lid is changed to the temperature φ1. When it is detected that the water has boiled over a higher predetermined temperature φ2, the control means controls the energization of the heater of the rice cooking means to heat the container of the rice cooking means less than the predetermined heat amount W1. A heating limiting means for limiting the amount of heat W2 is provided.

Operation According to the above configuration, the temperature of the lid of the rice cooker is measured in two stages by the heating limiting means during the boiling process by adding the maximum amount of heat in the rice cooking process, and the amount of heat to be added is divided into two stages as the temperature rises. By lowering it, the bubbles that had boiled up near the lid in the container of the rice cooker due to boiling water fall to near the water surface in the container, and then continue to boil in the boiling maintaining process, so the generated bubbles are in the container. Since it stays near the water surface, it prevents the bubbles from spilling out of the steam vent hole in the lid, and can cook rice with the same deliciousness as before.

Embodiment FIG. 1 shows a block diagram of an embodiment of the present invention.

1 is a container 1b which is a pot for storing rice and water for cooking rice
And a rice cooking means composed of a heater 1c for heating the container 1b and the like, 2 is white rice, brown rice,
Menu selection switch for selecting multiple rice cooking menus such as porridge and rice, 3 start switch for starting rice cooking, 4 for each rice cooking menu, remember rice cooking process such as water absorption, heating, boiling maintenance, steaming, etc. It is a storage means. 5a is a temperature detecting means for measuring the temperature θ of the container of the rice cooking means 1, 5b is a temperature detecting means for measuring the temperature φ of the lid 1a of the rice cooking means 1, 6 is a menu selection switch 2, a start switch 3, a storage means 4 and a temperature detecting means. It is a control means which receives the input of 5 and controls electricity supply to the heater of the rice cooking means 1 to cook rice.

Reference numeral 7 denotes a display means for displaying a rice cooking menu, a rice cooking process and the like in response to an output of the control means 6, and 8 denotes a temperature φ of the lid 1a detected by the temperature detecting means 5b at a predetermined temperature φ1 in the rice porridge rice cooking process. When it exceeds, the control means 6 controls the energization of the heater 1c of the rice cooking means 1 to control the container of the rice cooking means 1.
When heating to 1b is limited to a predetermined amount of heat W1, and when it is detected that the temperature φ of the lid 1a exceeds a predetermined temperature φ2 higher than this temperature φ1 and water is boiled, the control means 6 causes the rice cooking means 1 Is a heating limiting means for controlling the energization of the heater 1c to limit the heating of the container of the rice cooking means 1 to a predetermined heat amount W2 lower than the predetermined heat amount W1.

FIG. 2 shows a rice cooking process of porridge according to an embodiment of the present invention. Although the rice porridge cooking process is shown here as an example, it goes without saying that the same applies to a rice cooking menu of brown rice, white rice, and the like.

In FIG. 2, in the water absorption step, the amount of electricity supplied to the heater 1c of the rice cooking means 1 is controlled by the control means 6 according to the output of the temperature θ of the container 1b detected by the temperature detection means 5a, and the rice is soaked for a predetermined time. This is a process of keeping the water at a temperature θ1 of a predetermined level of lukewarm water and allowing the rice to absorb water sufficiently.

The leveling process is performed by the control means 6 by the heater 1c of the rice cooking means 1.
The heating restriction means 8 is used in the step of controlling the energization to the heater to heat it with the maximum amount of heat and the medium-heat step, and the rice cooking means 1 is heated by boiling water.
In order to prevent bubbles that have blown up to the vicinity of the lid 1a in the container from spilling through the steam vent holes opened in the lid 1a, the predetermined temperature φ1 and φ2 are measured by the input of the temperature detecting means 5b. According to the input, the control means 6 makes the heater 1c of the rice cooking means 1 boil while lowering the power supply in two steps, and the boiling maintaining step adjusts the amount of electricity supplied to the heater 1c of the rice cooking means 1, The step of cooking the porridge by continuing to boil water for a predetermined period of time, and the wiping step are the steps of evaporating the excess water attached to the lid 1a and the like.

The rice cooker according to the present invention cooks rice porridge by the above rice cooking process.

EFFECTS OF THE INVENTION As described above, according to one embodiment of the present invention, in the rice cooking process of porridge, after the step of applying the maximum amount of heat, heating is performed in two stages according to the temperatures of two points of the lid of the rice cooker. Since there is a process for lowering the amount of heat, the bubbles that had been generated when the maximum amount of heat was being applied and had reached near the lid in the container of the rice cooker fell to near the water surface, so the steam that opened in the lid You can cook delicious tasty rice porridge as before without water spilling through the holes.

[Brief description of drawings]

FIG. 1 is a block diagram showing a rice cooker according to one embodiment of the present invention, FIG. 2 is a diagram showing a rice porridge cooking process in the rice cooker according to one embodiment of the present invention, and FIG. 3 is a rice cooker according to a conventional example. The block diagram shown in FIG. 4 is a diagram showing a rice cooking process for porridge in a conventional rice cooker. 1 ... rice cooking means, 2 ... menu selection switch, 3 ...
Start switch, 4 ... storage means, 5 ... temperature detection means, 6 ... control means, 7 ... display means, 8 ... heating restriction means.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Machiko Higashi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Miwa Yamamoto, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. A rice cooker for cooking rice, which comprises a container for storing rice, a lid of the container, a heater for heating the container, a start switch for starting rice cooker, and a container for the rice cooker. Temperature detection means for measuring the temperature θ and the lid temperature φ, the start switch, and a control means for receiving the input of the temperature detection means and controlling the energization of the heater of the rice cooking means to cook rice. In the step of boiling water in the step, when the temperature φ of the lid detected by the temperature detecting means exceeds a predetermined temperature φ1, the control means controls the energization of the heater of the rice cooking means. Limit the heating of the rice cooking means to the container to a predetermined amount of heat W1,
Next, when it is detected that the temperature φ of the lid exceeds a predetermined temperature φ2 higher than the temperature φ1, and the water is boiled, the control means controls the energization of the heater of the rice cooking means to control the container of the rice cooking means. Rice cooker constituted by heating limiting means for limiting the heating to the predetermined heat amount W2 smaller than the predetermined heat amount W1.