JPS6352289B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a display device for a heating appliance such as an electric range having a display means for displaying the amount of current applied to a heating means such as a heater.

Conventional configuration and its problems Conventional heating devices such as electric ranges have a display device that displays the amount of current applied to heating means such as heaters.
Although the display was displayed using LEDs, etc., the display disappeared when the power supply was set to 0, and the heating means such as heaters and their surroundings were extremely hot and could cause accidents such as burns if touched. Or, there were cases where a container of resin or the like was placed in the wrong place and melted.

Purpose of the Invention In order to solve the above-mentioned problems, the present invention aims to prevent accidents such as burns by displaying that the heating means and its surroundings are high temperature after the heating means such as a heater is energized. It is something.

Composition of the Invention The display device for a heating device of the present invention includes a heating means such as a heater for heating containers such as pots, food, etc., and a display means for displaying the amount of electricity applied to the heating means, and the display device is configured to be set by the user. The signal from the energization amount setting means is determined by the energization amount determining means as the amount of energization to be applied to the heating means, the energization amount control means is controlled by the signal from the energization amount determining means, and the set energization amount is applied to the heating means. The means is energized, and at the same time, the first display control means controls the output of the display means in response to a signal from the energization amount determining means. Furthermore, when the heating means is energized, it is reset to 0,
It has a timer means for counting time when the heating means is not energized, and after the energization to the heating means is stopped until the timer means reaches a certain time, the display means is controlled by the second display control means. is configured to blink.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 3 shows a block diagram of a heating device according to an embodiment of the present invention, in which 20 is a heating means such as a heater for heating containers such as pots, foods, etc., and 21 is the amount of electricity supplied to the heating means 20. This is a display means for displaying. Reference numeral 22 denotes an energization amount setting means by which the user sets the amount of energization to the heating means.Based on the signal from the energization amount setting means 22, the energization amount setting means 23 determines the amount of energization to the heating means 20. , and controls the energization amount control means 24 that controls the amount of energization to the heating means 20 based on the control signal from the energization amount determining means 23, and energizes the heating means 20 with the set amount of energization, and at the same time A first display control means 25 controls the output of the display means 21 in response to a signal from the energization amount determining means 23. Further, when the heating means 20 is energized, it is reset to 0, and when it is not energized, the timer means 26 counts the time, and after the energization to the heating means 20 is stopped, the timer means 26 reaches a certain time. Until then, the second display control means 27 is configured to cause the display means 21 to blink.

FIG. 1 shows a circuit diagram of this embodiment, which is made up of a microcomputer 1 and peripheral circuits. Microcomputer 1 shown here
consists of a CPU, ROM, RAM, input/output ports, etc. This is a so-called one-chip microcomputer.

The variable resistor 2 as a means for setting the amount of current is an A/D
It is connected to the input port of the microcomputer 1 via the converter 3. As a result, the energization amount setting signal from the variable resistor 2 is converted into a binary number and read into the microcomputer 1.

A series circuit of a heating means 5 and a bidirectional thyristor 6 is connected to the alternating current 4, and a gate current flows through the bidirectional thyristor 6 from a direct current power source 7 through a light receiving portion of a photocoupler 8.

Drives the energization amount control signal from the output port of the microcomputer 1 via the transistor 9,
By passing a current through the light emitting section of the photocoupler 8, the light receiving section of the photocoupler 8 operates, a gate current flows from the DC power supply 7, and the bidirectional thyristor 6 is energized.

Based on the energization amount setting data from the variable resistor 2, the microcomputer 1 outputs "on" and "off" signals at predetermined intervals to drive the bidirectional thyristor 6. It is configured to adjust the amount of electricity supplied to the.

At the same time, the display control signal from the output port of microcomputer 1 is used as a display means.
Current flows through LEDs 10 to 19 and lights them up.

This display control signal is generated by the microcomputer 1 outputting an "on" signal based on the energization amount setting data from the variable resistor 2, and lighting up each of the LEDs 10 to 19 (LEDs 10 to 19 light up at maximum power, hereinafter 1/10 Each time the power decreases, the LEDs are turned off one by one), and the amount of current applied to the heating means 5 is displayed. Furthermore, this display control signal is transmitted to the LED 10 for a certain period of time (in the embodiment, the time required for the temperature of each part to drop, for example, 15 minutes) after the heating means 5 is de-energized.
~19 is configured to blink.

Next, the operation of the display device of the heating device configured as described above will be explained.

Figure 2 shows the contents of the microcomputer 1.
It shows a flowchart stored in ROM. The program operates according to the steps shown in this flowchart. Here, the timers in the steps shown in this flowchart are one and the same timer. First, the timer is set (stepped) to 16 minutes as an initial setting, and then the amount of current to be applied to the heating means 5 is determined (stepped) based on the signal from the variable resistor 2. Furthermore, in the step, it is determined whether the amount of energization is 0 or not based on the determination made in the step.

If it is determined that the amount of energization is 0, it will proceed to step, issue a signal to stop energization and stop lighting the LED, and start counting on the timer, but in this case, since the timer is set to 16 minutes in step, This means that the timer starts counting from the 16th minute. Therefore, the timer is set to 15 at step
When determining whether it is longer than 15 minutes, since the timer starts counting from 16 minutes, it is always 15 minutes or longer, so proceed to step, pass through the LED lighting stop program, and return to step. In this way, nothing is displayed immediately after the power is turned on.

However, if the user sets the energization amount of the variable resistor 2 to a value other than 0, it is determined in step that the energization amount is other than 0, and the process proceeds to step.
The heating means 5 is energized with the energization amount determined in the step, and in the step, an LED corresponding to the energization amount determined in the step is turned on.Furthermore, the timer is set to 0 minutes in the step, and the process returns to the step. Therefore, as long as the variable resistor 2 is set to a value other than 0, the step →→→→→
repeat. If the variable resistor 2 is set to 0 energization amount in this state, it will be determined that the energization amount is 0 in step and the process will proceed to step where the energization will be stopped.
A signal to stop the LED lighting is output and the timer starts counting, but in this case, the timer is set to 0 minutes in the step, so the timer starts counting from 0 minutes. Therefore,
In the step, the timer determines that the time is 15 minutes or less, so the program proceeds to the step and starts blinking the LED. In this embodiment, the number of blinking LEDs is 10, but it may be one or several. Then return to the step. If you leave the setting of variable resistor 2 at 0, the step will continue until the timer reaches 15 minutes or more→→→→→
Repeat until the LED blinks.

Effects of the Invention As explained above, according to the present invention, the amount of current applied to the heating means is controlled according to the setting of the variable resistor as the energization amount setting means, and at the same time, the amount of current applied to the heating means is controlled according to the setting of the variable resistor as the energized amount setting means. Turns the LED on or off. After energization, if the energization amount setting is set to 0, the energization to the heating means is stopped, and the LED serving as the display means blinks for a certain period of time when the heating means and its surroundings are at high temperature. By displaying a message indicating that the temperature is high, the user can be alerted, and as a result,
Accidents such as burns can be prevented from occurring, and since the amount of current energized and the high temperature state of the heating means etc. after energization are displayed on the same display means, even if there are multiple heating means, the high temperature state will not be displayed. It is easy to understand where the light is on, and since the display is blinking instead of being lit during use, it is more appealing to the human eye, resulting in safety concerns. It has an excellent effect in that the effect is very large.

[Brief explanation of the drawing]

FIG. 1 is an electric circuit diagram of a heating device showing an embodiment of the present invention, FIG. 2 is a flowchart showing an example of a program of the heating device, and FIG. 3 is a block diagram of the heating device. DESCRIPTION OF SYMBOLS 1... Microcomputer, 2... Variable resistor, 5... Heating means, 8... Photocoupler, 9...
...Transistor, 10-19...LED.

Claims (1)

[Claims] 1 Heating means such as a heater, energization amount setting means for setting the amount of energization to the heating means, energization amount determining means for determining the energization amount based on a signal from the energization amount setting means, and this energization amount determining means energization amount control means for controlling the energization amount to the heating means based on a control signal from the heating means; display means for displaying the energization to the heating means; and the display means based on the control signal from the energization amount determining means. a first display control means for controlling the output of the heating means; a timer means that is reset to 0 when the heating means is energized and counts the time when the heating means is not energized; and a timer means for counting the time until the timer reaches a certain time. and second display control means for blinking the display means during the period of time.