JPH0586211B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a cooking appliance equipped with a heat retention device.

[Conventional technology]

FIG. 3 is a configuration diagram of the operating section of a conventional jar rice cooker. In the figure, 31 is a rice cooking start switch that starts rice cooking, 32 is a cancel switch that cancels the rice cooking operation and the keeping warm operation, and 33 is a keeping warm operation from the canceled state. A warming key 34 is a display means for displaying the rice cooking operation and the warming operation. Figure 4 is a flowchart of the warming operation of a conventional jar rice cooker equipped with a microcomputer.When the rear pot is removed after the warming operation starts (step 21), this is detected (step 22) and the warming operation is stopped. (Step 23). When the pot is then attached, this is detected (step 24) and the warming operation is resumed (step 25).

Next, the operation will be explained.

During the warming operation, when rice is to be cooked next time, the warming operation is first canceled by the cancel switch 32, and then the rice cooking is started by the rice cooking start switch 31.

[Problems to be Solved by the Invention] Since the conventional jar rice cooker is configured as described above, in order to cook rice during the keep-warm operation, the keep-warm operation must be canceled by operating a switch; The annoyance of this was overwhelming. In addition, if the keep-warm operation is not canceled due to forgetting or erroneous operation, the rice set in the pot for cooking may be heated by the keep-warm operation, resulting in cooking errors such as raw rice being cooked. Ta.

This invention was made in order to solve the above-mentioned problems, and when a container is attached or detached during a warming operation, it automatically determines whether to continue keeping warm or cancel it, and controls the heating element. To provide a cooking device which allows easy operation of starting rice cooking and prevents erroneous cooking due to erroneous operation.

[Means for solving problems]

The cooking appliance according to the present invention includes a removable container provided in the outer box, and a desorption detection means detects the attachment and detachment of the outer box and the container, and when the attachment detection means detects attachment of the container. , comprising a heat retention control means that compares the temperature of the container with a preset predetermined temperature and makes a determination by the determination means, and cancels the heat retention operation when the determination means determines that the temperature of the container is below the predetermined temperature in the heat retention state. It is.

[Effect]

In the cooking device of the present invention, when the container is detached during the heat-retaining operation, the detachment detection means detects this, and at that time, the temperature detection means detects the temperature,
Based on the detected temperature, the determination means determines that heat keeping is currently unnecessary when the detected temperature is below a predetermined temperature, and the unnecessary heat keeping operation is automatically canceled.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is an outer box, 2 is a removable pot housed in the outer box 1, 3 is a heat-retaining heater that heats the pot 2 and keeps it warm, 4 is a pot detector that detects the presence or absence of the pot 2, 5 includes a hook detector 4; attachment/detachment detection means for detecting attachment/detachment of the hook based on a detection signal from the hook detector 4;
Reference numeral 6 denotes a temperature detector that detects the temperature of the outer circumference of the hook 2 when it is detected by the signal output of the attachment/detachment detection means 5 that the hook 2 has been removed and then attached. Based on the detection signal, it is determined whether the temperature is higher than a predetermined temperature. Reference numeral 8 denotes a heat retention determining means, which determines whether to continue or cancel the heat retention based on the determination result of the temperature determining means 7. Reference numeral 9 denotes heat retention control means, which controls the heating amount of the heat retention heater 3 based on the determination result of the heat retention determination means 8.

Here, the attachment/detachment detection means 5, the temperature determination means 7, and the heat retention determination means 8 are a memory storing a processing program, an input circuit for inputting detection signals from the pot detector 4 and the temperature detector 6, and inputs to this input circuit. It is constituted by a microcomputer equipped with a CPU for outputting an output signal obtained by program processing based on a signal generated by a program, that is, a heat retention determination means, to the heat retention control means 9.

Next, the operation of the above device will be explained based on FIG. 2. FIG. 2 is a flowchart of the warming operation of this jar rice cooker. When the pot 2 is removed during the warming operation, the removal state of the pot 2 is detected by the detachment detection means 5 based on the detection signal of the pot detector 4 (step 1). twenty two). Based on this detection signal, the heat retention control means 9 temporarily stops the heat retention operation (step 23). Thereafter, when the hook 2 is attached, the attachment/detachment detection means 5 detects that the hook 2 has been attached based on the detection signal from the hook detector 4 (step 24). At this time, the temperature determining means 7 determines whether the temperature t ₀ detected by the temperature detector 6 is equal to or higher than a predetermined temperature T ₁ (for example, 50° C.) (step 25).
During the warming operation, the temperature of the cooked rice is maintained at approximately 70℃, so the temperature detected by the temperature sensor 4 is also approximately 70℃. Place pot 2 in outer box 1 to set water.
Remove it. During this period, which lasts for several minutes, the temperature sensor 4
is cooled by outside air. In addition, when the amount of cooked rice in the pot 2 is small, the pot 2 may float up when stirring the rice, and the pot detector 4 and detachment detection means 5 may rise.
Although attachment and detachment of the pot 2 may be detected in this case, the temperature detector 6 is not cooled down because the time is short (seconds). Therefore, by determining the temperature (step 25), it is possible to determine whether or not the pot 2 has been attached and detached for the next rice cooking. Next, based on the temperature determined by the temperature determination means 7 (step 25), the heat retention determination means 8 determines whether to continue or cancel the heat retention. (Step 25)
If the determined temperature is 50°C or higher, the heat retention operation is restarted (step 26), and if the temperature is 50°C or lower, the heating amount of the heat retention heater 3 is controlled by the heat retention control means 9 so as to cancel the heat retention (step 27).

[Effects of the Invention] As described above, according to the present invention, when a container is attached in a heat-retaining state, the determination means compares the temperature of the container with a preset predetermined temperature,
When the temperature of the container is below a predetermined temperature, it is determined that thermal insulation is not required at present, and the unnecessary thermal insulation operation is automatically canceled, thereby simplifying the operation at the start of cooking and avoiding erroneous cooking. This has the effect of providing a cooker that can.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a flowchart showing the operation of an embodiment of the present invention, FIG. 3 is a block diagram showing the operation section of a conventional rice cooker, and FIG. FIG. 4 is a flow chart showing the operation of a conventional rice cooker. In the figure, 1 is an outer box, 2 is a container, 3 is a heating element, 5 is a desorption detection means, 7 and 8 are determination means, and 9 is a heat retention control means. Note that the same symbols in the figures are the same.
or a corresponding portion.

Claims (1)

[Claims] 1. A container that is removably installed in the outer box, a heating element that heats the container, a detachment detection means that detects attachment and detachment between the outer box and the container, and when attachment of the container is detected by the attachment and detachment detection means. , a heat retention control comprising a determination means for comparing and determining the temperature of the container with a preset predetermined temperature, and canceling the heat retention operation when the temperature of the container is equal to or lower than the predetermined temperature according to the determination means in the heat retention state. A cooking device characterized by being provided with a means.