JPH0560374B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hot plate for general household use.

BACKGROUND ART A conventional hot plate of this type includes a cooking plate for cooking, a heater for heating the cooking plate, a temperature detection means for detecting the temperature of the cooking plate, and a temperature detected by the temperature detection means. and a control means for controlling energization to the heater so that the temperature reaches a predetermined temperature,
With this configuration, the cooking plate is heated to a predetermined temperature, so the user does not have to adjust the heat level. I was able to cook grilled foods etc.

Problems to be Solved by the Invention However, with the above conventional configuration, it is impossible to directly attach temperature detection means such as a thermostat or thermistor to the cooking surface of the cooking plate.
Therefore, there is a distance between the cooking surface and the temperature detection means, and as a result, it takes time for the heat to be transferred to the temperature detection means. It was not possible to accurately and accurately detect the temperature of the cooking surface of the cooking plate.

Therefore, for example, if a large amount of ingredients are placed on a cooking plate that has been heated to a predetermined temperature, the heat of the cooking plate will rapidly transfer to the ingredients, causing the temperature of the cooking plate to drop. In this case, it takes a long time for the temperature detection means to detect this decreased temperature and for the control means to energize the heater. As a result, the cooking plate becomes cold during that time, which causes problems such as the shape of the food being distorted and the taste being bad, depending on the type of food being cooked.

The object of the present invention is to provide a hot plate that solves these problems.

Means for Solving the Problems In order to solve the above problems, the present invention provides a cooking plate for cooking, a heater for heating the cooking plate, a temperature detection means for detecting the temperature of the cooking plate, and a heater for heating the cooking plate. It has a control means that controls energization of the heater based on the output of the temperature detection means and sets the cooking plate to a first temperature, and a high-heat switch operated by a user, and when the high-heat switch is operated, a predetermined temperature is set. the first control means for a time
The structure is such that the current is applied so that the second temperature is higher than the temperature of the second temperature.

Effect According to the above configuration, even if the temperature detection means cannot detect the temperature of the cooking surface instantaneously and accurately due to poor performance, the user can press the high heat switch before placing the ingredients on the cooking plate and use the The second temperature can be kept higher than the first temperature of the cooking plate, so even if a large amount of ingredients are placed on the cooking plate at once, the temperature of the cooking plate will not drop to a low temperature. Be able to cook good food. Further, since the energization control means for temperature control is used, no separate heater control means is required, and the configuration can be simplified.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings. The figure shows a circuit diagram of a hot plate according to an embodiment of the present invention. Reference numeral 1 denotes a cooking plate made of aluminum, iron, etc., and a heater 2 is bonded to this cooking plate 1. 3 is a high flame switch, and this high flame switch 3 is constructed by connecting a tact switch 4 and a capacitor 5 in series. Resistor 13 is capacitor 5
This is a discharge resistor for discharging the electric charge. Reference numeral 6 denotes temperature detection means consisting of a thermistor, which is in contact with the bottom of the cooking plate 1. Reference numeral 7 denotes a control means, and the control means 7 is composed of a reference resistor 8, a temperature detection resistor 9, a comparator 10, and a relay 11.
The voltage generated across the temperature detection resistor 9 and the reference voltage generated by the reference resistor 8 are compared to drive a relay 11 that opens and closes between the heater 2 and the AC power source 12. Further, the reference resistor 8 is connected to the high flame switch 3, and while the high flame switch 3 is outputting, the reference voltage generated by the reference resistor 8 becomes high.

The operation of the above configuration will now be described.
When the user energizes the hot plate, the heater 2 is energized via the relay 11, and the cooking plate 1 is heated by the heater 2. Heat is transferred from the cooking plate 1 to the thermistor constituting the temperature detection means 6. Due to this heat transfer, the resistance value of the thermistor decreases, so the voltage generated at the connection with the temperature detection resistor 9 increases. death,
When this voltage value exceeds the reference voltage created by the reference resistor 8, the comparator 10 turns off the relay 11 and stops energizing the heater 2.

In this way, the cooking plate 1 is heated until it reaches a constant temperature and is kept at a constant temperature. Here, when the user presses the tact switch 4 of the high heat switch 3 before starting cooking, the capacitor 5 starts to be charged, and the reference voltage created by the reference resistor 8 increases until the capacitor 5 is sufficiently charged. As a result, the temperature of the cooking plate 1 also increases. As a result, even if the user places a large amount of ingredients on the cooking plate 1 at once, the temperature of the cooking plate 1 will not drop to an extreme level unlike a conventional electric hot plate.

Effects of the Invention As described above, according to the present invention, the user can press the high heat switch to set the temperature to the second temperature, which is higher than the normal first temperature, before placing the ingredients on the cooking plate. Therefore, even if you put a lot of ingredients on the cooking plate at once, the temperature of the cooking plate will not drop to a low temperature, and as a result, you can make a large amount of delicious food without losing its shape. In addition, since we use energization control means to control temperature,
It can be easily configured without requiring a separate heater control means.

[Brief explanation of the drawing]

The figure is a circuit diagram of an electric hot plate showing one embodiment of the present invention. 1... Cooking plate, 2... Heater, 3... High heat switch, 6... Temperature detection means, 7... Control means.

Claims (1)

[Claims] 1. A cooking plate for cooking, a heater for heating the cooking plate, a temperature detecting means for detecting the temperature of the cooking plate, and an output of the temperature detecting means controlling energization to the heater to control the cooking plate for the first time. and a high flame switch operated by a user, and when the high flame switch is operated, the control means sets the temperature to a second temperature higher than the first temperature for a predetermined period of time. A hot plate configured to conduct electricity in a similar manner.