JPH0444399B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a control device for a hot plate used in general households.

Prior Art As shown in FIG. 3, a conventional hot plate includes a first heater 1 that heats the entire surface of the plate;
A second heater 2 that partially heats the plate is switched by a switch 3 to determine which heater is energized, and a temperature detection means 4 such as a bimetal thermometer detects the temperature of the plate, and the contact is mechanically connected. The temperature of the plate is controlled at a constant level by opening and closing the plate.

Problems to be Solved by the Invention However, in the above configuration, when the heater changeover switch 3 is set to either one and is used again next time, the first heater 1 or the second heater
The energization starts in either of the heaters 2, that is, whichever was used last time for full heating or half heating.

Therefore, the heater that the user intended to use for cooking may be energized, and if the user notices the heater after it has been energized and the temperature has increased, there is a drawback that the user must wait until the temperature has decreased.

Means for Solving the Problems In order to solve the above problems, the present invention provides a first heater that heats the entire plate, a second heater that partially heats the plate, and a second heater that heats the plate partially. The hot plate is equipped with heater switching means for switching a second heater, and includes a temperature control device, a power control element for controlling energization of the first and second heaters by the output of the temperature control device, and a start switch. The heater is equipped with an energization setting means for setting one of the heaters to be energized whenever the start switch is turned on.

Operation The hot plate control device configured as described above uses heater switching means to switch between the first heater that completely heats the plate and the second heater that partially heats the plate. Even if the heater is energized or set by the user, when the power is turned off or stopped,
Next, when the start switch is turned on, the operation is started from the energized state of one heater determined by the energization setting, and the heater determined by the power control element is energized.

Example An embodiment of the present invention is shown in FIG.

In FIG. 1, 5 is a first heater that heats the entire surface of the plate, and 6 is a second heater that partially heats the plate. 7 is a heater switching means, which is a driving means 1 for power control elements 10 and 11;
4 and 15, and decide which one to use. The power control elements 10 and 11 are connected to the first and second heaters 5 and 6.

Reference numeral 8 denotes a temperature control device which turns on and off either of the drive means 14 or 15 of the power control element so as to maintain the temperature of the plate at the temperature set by the temperature setting means 9.

Reference numeral 12 denotes a start switch, which, after the power is connected, releases the inhibition of the temperature control device 8 which is in the inhibited state and starts energization.

The signal from the start switch 12 is applied to the energization setting means 13, which operates the heater switching means 7 so as to always set it to either the first or second heater.

FIG. 2 shows an example of a flowchart when this configuration is implemented using a microcomputer.

The first step is an input waiting routine to check whether the start switch has been pressed, and if the start switch has been pressed, the process moves to the second step.

In the second step, the energization setting is performed, and in this example,
The first heater is set to be energized.

In the third step, temperature control is performed, and if the temperature of the plate is above the set temperature, the energization is stopped, and when the temperature is below the set temperature, the energization is started. (Fourth step).

In the fifth step, the user inputs whether or not to change the temperature setting, and if the change is made, the set temperature is changed. In the sixth step, the heater to be energized is switched from the first heater.

Since the configuration is as described above, in this embodiment, when the power is turned on and the start switch is pressed,
Since the energization setting is performed in the first step, the first heater is always energized.

Thereafter, even if the second heater is switched to energization during use, once the power is turned off, turned on again, and the start switch is pressed, the first heater will be energized and the operation will be performed again.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, regardless of whether the first or second heater is used, when restarting after cutting off the power, etc. , it is possible to provide an easy-to-use hot plate that starts by energizing one heater, and does not cause problems such as accidentally energizing other heaters and delaying the start of cooking. There is something big about it.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a hot plate control device showing an embodiment of the present invention, FIG. 2 is a flowchart of a program showing an embodiment of the present invention, and FIG.
The figure is a circuit diagram of a conventional hot plate. 5...first heater, 6...second heater, 7
... Heater switching means, 8 ... Temperature control device,
10, 11...Power control element (relay), 12...
...Start switch, 13...Electrification setting means.

Claims (1)

[Claims] 1. A first heater that heats the entire plate, a second heater that partially heats the plate, a heater switching means that switches between the first and second heaters, a temperature control device, and a temperature control device a power control element that controls energization of the first and second heaters with the output of the heater, and a start switch;
A hot plate control device comprising energization setting means for controlling a heater switching means to the energization state of one of the heaters determined by receiving the signal when a start switch is turned on.