JPH0759223B2 - Electric rice cooker - Google Patents

Description

TECHNICAL FIELD The present invention relates to an electric rice cooker used in general households.

2. Description of the Related Art In recent years, there are many demands from the market to cook rice more deliciously in electric rice cookers, and the wattage of the electric power of the heater is about to increase. However, if the electric power of the heater is increased to high watts, there are problems such as temperature rise of the product itself, and extra cost is required to improve this, so an electric rice cooker using a conventional power consumption heater is still available. There is much demand.

Problems to be Solved by the Invention Under such circumstances, if the heater is increased in wattage for more delicious rice and the heater is controlled by a conventional control method, the electric power (heat power) used for cooking rice is substantially large. Too bad, not so good, and the product temperature rises too much. On the other hand, when trying to make an electric rice cooker that uses a control method that matches the higher wattage of the heater, there is a great demand for the electric rice cooker that uses a conventional power-consuming heater as described above, and development of control methods for each specification is required. There was a problem that it was necessary to do it and it took too much cost.

It is an object of the present invention to provide an electric rice cooker that solves the above problems.

Means for Solving the Problems In order to solve the above conventional problems, the present invention provides
During the pre-cooking process and boiling maintenance process according to the rated power consumption of the heater, watt setting means for setting the maximum energization rate to this heater, and temperature detection that detects the temperature of the container when the rice cooking switch is pressed During the operation of the pre-cooking step and the boiling maintaining step according to the output of the means, rice cooking means is provided for controlling the heater to perform the rice cooking operation at a current ratio set by the watt setting means or less.

Action With this configuration, it is possible to set the maximum energization rate for obtaining the optimum heating power in the precooking process and the boiling maintaining process in accordance with the rated power consumption of the heater. Can be kept at a temperature of
In the boiling maintaining process, the boiling maintaining process can be continued for a predetermined time, and rice can be cooked at an optimum output using a high wattage heater.

Example Hereinafter, an electric rice cooker according to an example of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram of an electric rice cooker according to an embodiment of the present invention. 1 is a container for accommodating rice, water, etc. A heater 2 heats the container 1. Reference numeral 3 is a temperature detecting means for detecting the temperature of the container 1. Reference numeral 4 is a watt setting means so that the maximum energization rate to the heater 2 can be set according to the rated power consumption of the heater 2. Reference numeral 5 is a switch for starting rice cooking. When the rice cooking switch 6 is pressed by the rice cooking means 6, the energization of the heater 2 is controlled below the maximum duty ratio set by the watt setting means 4, and the rice cooking operation is performed according to the output of the temperature detecting means 3. .

FIG. 2 shows a time change diagram of the container temperature, which explains the rice cooking operation. The part of T _{1 is} the part that allows the rice to fully infiltrate the water in the so-called “pre-cooking” process. T ₂ is the part where rice is cooked with strong heat in a so-called “cooking” process. T ₃ is the part where the rice cooked in the so-called “Murashi” is spotted to evaporate excess water. Here, the watt setting means 4 of this embodiment
Describe the usefulness of. First, it is necessary to keep a certain temperature in the "pre-cooking" as shown in the enlarged view of the circle in T ₁ (shown by the dotted line), but in reality, the heater 2 controls the temperature range of θ as shown in the figure. I am doing it. If a high wattage heater is used, this θ becomes too large and the temperature cannot be controlled to the temperature shown by the dotted line, making the rice cooked poorly. Although full energization of the heater 2 for the portion of the T ₂₁ in the portion of the T ₂ are increases once to a predetermined temperature by strong thermal, whereas the portion indicated by T ₂₂ indicates the boil-preserving process water is boiling , It is said that this T ₂₂ time should be within a certain time range. For this reason, if a heater with a very high wattage is used, this T ₂₁ will become too short, and the rice will not cook well. The reason why the watt setting means 4 of this embodiment is very useful in these T ₁ and T ₂₂ portions will be obvious.

Effects of the Invention As described above, the present invention is a watt setting means for setting the maximum energization rate to the heater during the operation of the precooking step and the boiling maintaining step according to the rated power consumption of the heater,
Depending on the output of the temperature detecting means for detecting the temperature of the container and the rice cooking switch when the rice cooking switch is pressed, the electricity set by the watt setting means during the operation of the pre-cooking step and the boiling maintaining step Since a rice cooking means for controlling the heater to perform the rice cooking operation at a rate lower than the rate is provided, the maximum energization rate for obtaining the optimum heating power in the precooking process and the boiling maintaining process is set according to the rated power consumption of the heater. In the pre-cooking process, the fluctuation range of temperature is small and can be maintained at a predetermined temperature, and in the boiling maintaining process, the boiling maintaining process can be continued for a predetermined time. You can cook rice with heat, and you can improve the cooked rice.

[Brief description of drawings]

FIG. 1 is a block diagram of an electric rice cooker according to an embodiment of the present invention,
FIG. 2 is a diagram showing a time change of a container temperature of the electric rice cooker. 1 ... Container, 2 ... Heater, 3 ... Temperature detecting means, 4 ...
… Watt setting means, 5 …… rice cooking switch, 6 …… rice cooking means.

Claims (1)

[Claims] 1. A container for containing rice and the like, a heater for heating the container, and a maximum energization rate to the heater during the operations of the pre-cooking process and the boiling maintaining process according to the rated power consumption of the heater. Watt setting means for setting, temperature detecting means for detecting the temperature of the container, rice cooking switch for starting rice cooking, and depending on the output of the temperature detecting means when the rice cooking switch is pressed. An electric rice cooker including a rice cooker that controls the heater to perform a rice cooker operation at a current ratio set by the watt setting device or less during the operations of the pre-cooking process and the boiling maintaining process.