JPH0350818Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rice cooker equipped with a control device that automatically operates a heating device for keeping rice warm based on information from a means for detecting the keeping temperature of rice.

[Conventional technology]

Conventionally, in the above-mentioned rice cooker, the control device was a device that simply controlled the warming heating device so as to continuously maintain the detected warming temperature at a preset fixed temperature. [See Figure 2 C] [Problem that the invention attempts to solve] However, in the case of the conventional structure described above, the temperature that is fixedly set in advance is the temperature that is set for keeping regular white rice warm. Therefore, there is no problem in keeping white rice warm, but in the case of various types of mixed rice such as soy sauce rice and gomoku rice, which have different optimal warming temperature conditions and limit conditions for warming time, it is difficult to keep white rice warm at the above set temperature. Continuous heat retention has the problem of deterioration during heat retention, resulting in discoloration and deterioration of the taste of the rice.

The purpose of the present invention is to improve the heat retention control mode and prevent deterioration of various types of mixed rice during heat retention.

[Means for solving problems]

The characteristic structure of the rice cooker according to the present invention is that it is provided with a means for specifying the type of rice, a means for storing a plurality of warming temperature change patterns according to the type of rice in the heat retention control device, and a means for storing a plurality of warming temperature change patterns according to the type of rice, and Execution means is provided for giving an operation command to the heating device for keeping warm so that the change pattern of the keeping temperature detected by the detecting means substantially matches the pattern corresponding to the type of rice specified by the specifying means among the patterns. In particular, its functions and effects are as follows.

[Effect]

In other words, multiple heat retention temperature change patterns are stored according to the optimal heat retention temperature conditions, heat retention time limit conditions, etc. for each of white rice and various types of mixed rice, and among these multiple temperature change patterns, artificially specified rice It automatically performs heat retention according to a pattern according to the type of heat retention while providing feedback on the actual heat retention temperature (detected heat retention temperature).

[Effects of the invention] As a result, it is possible to reliably maintain the optimum temperature for each type of rice, and it has become possible to prevent deterioration of the rice due to insulation regardless of the type of rice. Assorted mixed rice,
It has become possible to store it at a good temperature without losing its color or taste.

〔Example〕

As shown in FIG. 1, a lid 2A that houses the inner pot 1
A main gas burner 3 for rice cooking that heats the bottom of the inner pot 1 and an ignition device 4 for it are provided in the outer case 2, and an electric heater 5 for keeping warm that heats the outer periphery of the inner pot 1 in a wide range is provided. The rice cooker is configured to be able to set, cook, and keep cooked rice warm.

Reference numeral 6 in the figure is an operation panel on which various operation switches such as a rice cooking switch and a rice cooking timer switch, and various display lamps are arranged.

A member 7 for abutting and supporting the bottom of the inner pot 1 in the inner pot storage state is provided, and the abutting support member 7
A sensor 8 is attached to the inner pot 1 to detect the temperature of the contents of the inner pot 1, and based on the temperature information from the sensor 8, when the temperature of the contents reaches a predetermined cooking temperature, the main gas burner 3 is turned on. It is configured to automatically stop rice cooking and automatically start keeping warm using the electric heater 5.

To configure the control configuration for keeping warm after cooking, the type of cooked rice (white rice, gomoku rice,
An operating section 9 is provided for specifying the amount of beans, rice, etc.) by operating a selection button 9A, and a weight sensor 1 is provided on the abutting support member 7 for detecting the amount of the contents of the inner pot.
0, as well as designation information from the designation operation section 9, content temperature information from the temperature sensor 8,
Further, a heat retention control device 12 is provided which automatically operates the heating capacity adjustment section 11 of the heat retention electric heater 5 based on the content amount information from the weight sensor 10.

Then, a plurality of heat retention temperature changes are made in accordance with the optimum heat retention temperature conditions and heat retention time limit conditions for each of the plurality of types of rice specified by the specification operation section 9, and in response to condition changes due to different amounts of rice. A storage unit 12A stores patterns in advance, and a pattern corresponding to the type of rice designated by the designation operation unit 9 and the amount of rice detected by the weight sensor 10 among the stored warming temperature change patterns. The control device 12 includes an execution unit 12B that provides an operation command to the heating capacity adjustment unit 11 while performing feedback control so that the change pattern of the heat retention temperature detected by the temperature sensor 8 matches the selected pattern with the selection pattern. Furthermore, the apparatus is configured to selectively perform a plurality of heat retention states as shown in FIG. 2A, B, and C depending on the type and amount of rice.

In addition, in FIG. 2 A and B, (off) indicates automatic stop of the heat retention operation based on the heat retention time limit condition.

Further, FIG. 2C shows the heat-retaining state when white rice is being cooked. Conventionally, only this heat-retaining state can be displayed, and the heat-retaining operation is stopped by manual operation.

Further, reference numeral 13 in the figure is a lamp indicating that the heat retention operation has been automatically stopped, and the lamp 13 indicates that the heat retention operation has been automatically stopped.
The light is automatically turned on by

[Another example]

Next, another example will be listed.

When setting the warming temperature change pattern, the amount of rice may be omitted from the setting parameters and the pattern may be set simply based on the type of rice. It is possible to omit the control device 1.
The amount of rice is also omitted from the selection conditions for pattern selection in step 2.

In addition, the change pattern of the warming temperature is selected based only on the type of rice, and the control device 12
The pattern selected based on the specification of the type of rice may be subjected to pattern correction based on the amount of rice.

If information regarding the amount of rice is required, instead of detecting the amount of rice using the weight sensor 10 as in the previous embodiment, the amount of rice may be input manually.

To specify the type of rice, instead of specifying the type of rice itself using a selection button, etc. as in the previous embodiment, the amount of ingredients to be mixed with the rice and the amount of various seasonings are input separately. The type of rice may be determined from the information, and the heat retention pattern may be selected based on the determination result.
In addition, the form of type designation and the specific designation operation structure can be changed in various configurations, and these designation configurations are collectively referred to as designation means 9.

The control device 12 can be modified in various ways, such as by using a microcomputer or combining various sequence circuits. , storage means 12A, and a partial configuration for executing heat retention control so that the pattern of change in the detected heat retention temperature almost matches the pattern corresponding to the type of rice designated by the designation means 9, and , referred to as execution means 12B.

The mounting position of the sensor that detects the insulation temperature and the specific detection form can be improved in various ways.
These various temperature detection structures are collectively referred to as a heat retention temperature detection means 8.

In addition, when indicating the automatic stop of the heat retention operation, the display means may be a chime display, a buzzer display, or a buzzer display instead of the lamp display as in the above embodiment.
Various display means can be applied, such as displaying a combination thereof.

As the heating device 5 for keeping warm, various heating devices such as an electric heater or a gas burner can be applied, and the heating device for cooking rice is not limited to a gas burner. It is also possible to have a dual-use configuration.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an overall explanatory diagram, and FIG. 5... Heat retention heating device, 8... Heat retention temperature detection means, 9... Designation means, 12... Control device, 12A
...Storage means, 12B...Execution means.

Claims (1)

[Scope of utility model registration request] A rice cooker is provided with a control device 12 for automatically operating a heating device 5 for keeping warm based on information from a means 8 for detecting the keeping temperature of rice, the rice cooker is provided with a means 9 for specifying the type of rice, and the control device 12, a means 12A for storing a plurality of warming temperature change patterns according to the type of rice; A rice cooker comprising execution means 12B for giving an operation command to the warming heating device 5 so that the pattern of change in the temperature keeping temperature detected by the detection means 8 substantially matches.