JPH0612686B2 - Hot plate controller - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a household hot plate controller.

2. Description of the Related Art A conventional hot plate control device controls energization of a heater embedded in a plate based on the set control temperature when a user sets one of the control temperatures of a plurality of plates. It was common to control the temperature of the plate.

Problems to be Solved by the Invention In such a conventional hot plate control device, the temperature is controlled only by one set control temperature. Since the control temperature must be changed while always checking the quality of the product, there is a problem that the usability is poor.

In view of the above problems, the present invention notifies the user of the end of cooking, and then automatically changes the control temperature of the plate,
The purpose is to improve usability by enabling automatic steam cooking.

Means for Solving the Problems In order to solve the above problems, the present invention sets a heater that is a heating means of a plate that heats food, a temperature sensor that sets the temperature of the plate, and a control temperature of the plate. Temperature setting means, notification means for giving a notification to the user, storage means for storing the control process of the hot plate, and the temperature setting means for setting a predetermined value based on the control process stored in the storage means. When the temperature of the plate decreases from the high temperature to the control temperature when the setting is performed, the temperature of the plate is output to the notification means at a control temperature higher than the set temperature, and when the temperature of the plate rises from the low temperature to the control temperature, the plate temperature is increased. When the temperature reaches the set temperature and then falls below this set temperature, it is output to the notification means, and then the energization of the heater is turned on and off so that the plate temperature becomes constant. During this time, when the temperature of the plate drops below a certain temperature due to the load of the food or the like, the heater is energized with a constant electric power, and when it rises to a predetermined temperature thereafter, it is output to the notification means. And a control means for controlling to change the set temperature.

Operation According to the present invention, when the plate temperature falls from the high temperature to the control temperature when the predetermined setting is performed, the notification is made at the control temperature higher than the set temperature, and the plate temperature changes from the low temperature to the control temperature. When the temperature of the plate rises to, the plate temperature reaches the set temperature, and when the temperature falls below the set temperature, a notification is given. By giving the notification in this way, the temperature of the plate will surely reach the set temperature for starting the cooking, and after the notification, the food can be put in a good state. When the temperature of the plate drops to a predetermined temperature due to the addition of food, the heater is energized with constant power, and when the temperature rises to a predetermined temperature, the notification means notifies the completion of the food and sets it at the same time. The control is performed so as to change the control temperature being set.

Embodiment FIG. 1 is a block diagram showing an embodiment of a hot plate control device of the present invention. In FIG. 1, 1 is a temperature setting means for setting the control temperature of the plate, 2 is a heater embedded in the plate for heating the food, 3 is a temperature sensor for measuring the temperature of the plate, and 4 is at the start and end of cooking. When the temperature of the plate is lowered from the high temperature to the control temperature when the control temperature is set by the temperature setting means, the notifying means 5 for giving notification gives the storage means for storing the control process of the plate. When the plate temperature rises from the low temperature to the control temperature, the plate temperature reaches the set temperature, and when the plate temperature next falls below the set temperature, the notification unit 4 outputs the control temperature higher than the set temperature. Output to the heater, and then the heater is turned on and off so that the plate temperature becomes constant. It energized with a constant power over a subsequent control means for controlling to change the set temperature and simultaneously output to the informing means 4 when raised to a predetermined temperature.

FIG. 2 is a circuit diagram showing a specific configuration of an embodiment of the hot plate control device of the present invention.

In FIG. 2, 11 is a temperature setting switch for setting the control temperature of the plate, 12 is a heater embedded in the plate for heating the food, 13 is a relay for energizing the heater 12, and 14 is for driving the relay 13. Relay drive unit, 15 is a temperature sensor for measuring the temperature of the plate,
Reference numeral 16 is A for A / D converting the output of the temperature sensor 15.
A / D converter, 17 is a buzzer for notifying at the start and end of cooking, 18 is the temperature setting switch 11 and the A /
An input unit 18a for inputting the output of the D converter 16, a storage unit 18c for storing the control process of the hot plate, an output unit 18d for outputting to the relay drive unit 14 and the buzzer 17, and the temperature setting switch. When the plate temperature falls from the high temperature to the control temperature when the predetermined setting is made by 11, the control temperature higher than the set temperature is output to the buzzer 17, and when the plate temperature rises from the low temperature to the control temperature. When the temperature of the plate reaches the set temperature and then falls below this set temperature, it is output to the buzzer 17, and then the temperature of the plate drops to a predetermined temperature even though the plate is energized with constant power, After that, when the temperature rises to a predetermined temperature, a micro computer equipped with a control unit 18b for controlling the temperature to be output to the buzzer 17 and simultaneously changing the set temperature. It is over data.

Next, the operation of the microcomputer 18 will be described.

FIG. 3 shows a main part of a flow chart of the microcomputer 18.

In FIG. 3, the temperature setting key 11 is input in step 21, and it is determined whether or not the temperature setting key 11 is input in step 22, and if there is not, the process goes to step 24, and if there is a key input. Step 23 shifts the hot plate control temperature by one and returns to step 21. In step 24, it is judged whether or not the input of the temperature setting key 11 is completed, and if it is not completed, the process returns to step 21, and if completed, the auto menu (automatic cooking process) is executed as the control temperature set in step 25. It is determined whether or not the point to be selected is selected, and if the auto menu is not selected, the normal temperature control of the hot plate is performed in step 26. If so, step 27 inputs the temperature sensor 15. In step 28, it is judged whether or not the temperature of the plate rises to the set temperature, and if it does not rise, in step 29 the second
It is judged whether or not the temperature control point (temperature above the set temperature) has been passed. If it passes, the process goes to step 33, and if not, the process goes to step 39. If the plate temperature rises toward the control temperature at step 28, then step 3
At 0, it is determined whether the first temperature control point (set temperature) has been passed. If it did not pass, step 32
If it passes, and if it passes, the counter is incremented in step 31. In step 32, it is judged whether or not the first temperature control point has been passed twice, and if it passes, to step 33,
If not, go to step 39. Step 3
In step 3, it is determined whether or not the buzzer 17 has sounded. If not, step 34 sounds the buzzer 17 to notify that cooking can be started. If it sounds at step 33, it is judged at step 35 whether or not the third temperature control point (temperature below the fourth temperature control point) has been passed, and if not, the process goes to step 39. If it has passed, at step 36 the fourth temperature control point (temperature below the set temperature)
If it does not pass, the step
At 39, if it passes, the set point is switched from the auto menu to the low temperature of the normal hot plate temperature control point at step 37. Next, at step 38, the buzzer 17 is sounded to notify that the auto menu is completed. In step 39, the heater 12 is energized with the heating power at the control temperature at that time. After the step 39, the process returns to the step 21, and the step 39 is repeated from the step 21. The temperature control point is the second temperature control point ≧ first temperature control point ≧ fourth temperature control point ≧
There is a third temperature control point relationship.

EFFECTS OF THE INVENTION As is clear from the above embodiments, the present invention has the following effects.

(1) Since the starting time of cooking can be easily grasped and the end of cooking is notified, it is not necessary to confirm the cooking state during cooking, and the usability can be improved.

(2) When the plate temperature is raised from the low temperature to the set temperature, the notification is given twice when the set temperature is reached, so when the plate temperature is controlled uniformly, it is possible to notify that cooking is possible. More accurate automatic cooking can be performed.

[Brief description of drawings]

FIG. 1 is a block diagram of a hot plate in one embodiment of the present invention, FIG. 2 is a specific circuit diagram of FIG. 1, and FIG. 3 is a flow chart of a microcomputer. 1 ... Temperature setting means, 2 ... Heater, 3 ... Temperature sensor, 4 ... Notification means, 5 ... Storage means, 6 ... Control means.

Claims (1)

[Claims] 1. A heater which is a heating means of a plate for heating cooked food, a temperature sensor for measuring the temperature of the plate, a temperature setting means for setting a control temperature of the plate, and a notification at the start and end of cooking. When the temperature of the plate is lowered from the high temperature to the control temperature when the control temperature is set by the notifying means, the storage means for storing the control process of the plate, and the temperature setting means, the control higher than the set temperature is performed. The temperature is output to the notification means, and when the plate temperature rises from a low temperature to the control temperature, the plate temperature reaches a set temperature, and when the plate temperature falls below the set temperature, the plate is output to the notification means, and then the plate The heater power was turned on and off so that the temperature of the plate would be constant, and during this time, the plate temperature dropped below a certain temperature due to the load of food etc. Is energized with a constant power to the heater, then a hot plate of a control device comprising a control means for controlling to change the set temperature to output to the informing means when it rises to a predetermined temperature.