JPH04194511A - Electric heater - Google Patents

Abstract

PURPOSE:To prevent the danger so as to make the time over which a heater remains at high temperature as short as possible by providing a blower means for sending air to a heater after a switch is opened and a control means for stopping the blower means as soon as the temperature of the heater becomes a certain temperature or lower. CONSTITUTION:A heater 8 for heating a pot 7 for use in cooking is connected through a control circuit 12 to a temperature detector 9 for detecting the temperature of the heater 8, a blow means 10 for sending cooling air to the heater 8 to cool it, and a switch 11 for energizing the heater 8. If a power source of the heater 8 is cut off by a switch 11 after completion of cooking, the blower means 10 is actuated to cool the heater 8. Thereafter the temperature of the heater 8 is detected by the detector 9 and when said temperature has reached temperature such that man can touch the heater 8 with his hand without getting burnt, the control circuit 12 functions so as to automatically stop the blower means 10.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electric stove equipped with a heater cooling device.

2. Description of the Related Art As shown in FIG. 3, in a conventional electric stove, a control circuit section 2 is connected to a heater 1 that heats the food to be cooked. The switch 3 that detects the temperature of the heater 1 is connected to the temperature detector 4 that detects the temperature of the heater 1, and the indicator lamp 5. When the switch 3 is turned on, the heater 1 is energized, and when the switch 3 is turned off, the heater 1 is de-energized. The temperature of the heater 1 is detected by a warm detector 4, and the control circuit 5 controls the high temperature indicator lamp 5 so that it continues to be lit while the temperature is high.

Problems to be Solved by the Invention However, in the conventional configuration as described above, even if the switch 3 is turned off and the high temperature indicator lamp 4 is lit, the temperature of the heater 1 does not drop by 1 degree, and if it takes a long time. is 20
There were times when the temperature remained high for 30 minutes, and during this time people touched heater 1 and suffered burns and other injuries.

The present invention solves the above-mentioned conventional problems, and its primary purpose is to prevent danger by minimizing the time that the heater is at high temperature. The second purpose of this is to disable the ventilation means so that cooking can continue.

Means for Solving the Problems In order to achieve the above object, the first means for solving the problems of the present invention is to provide a heater for heating food, a switch for controlling the supply of electricity to the heater, and a switch for controlling the supply of electricity to the heater. and a temperature detection means for detecting the temperature of the heater, and a control means for stopping the air blowing means when the temperature of the heater falls below a certain temperature. This is what I did.

A second means for solving the problem is constructed by providing a pan detection means for detecting the presence or absence of a pan above the heater, and a control means for operating the air blowing means when the absence of the pan is detected.

Effect of the present invention In the above-described configuration, the temperature of the heater is quickly lowered to a safe temperature that will not cause burns after the switch is turned off, and when you want to continue cooking even after the switch is turned off, and the pot is above the heater. In such cases, the ventilation means should not be moved.

EXAMPLE A first example of the present invention will be described below with reference to FIG.

As shown in the figure, the heater 8 that heats the cooking pot 7 is
A temperature detector 9 that detects the temperature of the heater 8, a blower unit 1o that sends cold air to the heater 8 to cool it, and a heater 8.
It is connected via a control circuit section 12 to a switch 11 for energizing.

To explain the operation of the above configuration, the switch 11 after cooking is completed.
When the heater 8 is turned off, the air blower 10 starts operating and cools the heater 8.

Thereafter, the temperature of the heater 8 is detected by the temperature detector 9, and when the temperature reaches a level that does not cause burns even if a person touches the heater 8, the control circuit section 12 operates so that the blowing means 10 is automatically stopped. .

Next, a second embodiment will be described with reference to FIG.

This device differs from the first embodiment in that it has a pan detection opening and a door 13 that penetrate through the center of the heater 8, are biased upward, protrude from the heater 8, and are movable up and down.
and a pot detection switch 14 which is pressed down and closed by the downward displacement of the rod 13 when the pot 7 is placed on top of the heater 8. - In other words, when the pot 7 was placed on top of the heater 8 after turning off the power to the heater 8 using the switch 11 after cooking, the blowing means 10 stopped!'! ! There are up to 7 pots
When the pot 7 is lowered from the top of the heater 8, the pot detection switch 14 opens due to the upward displacement of the rod 13, and it is detected that the pot 7 is no longer on the top of the heater 8.

When the pot 7 is removed from the upper part of the heater 8, the blowing means 1° starts operating and cools the heater 8. Thereafter, the temperature of the heater 8 is detected by the temperature detector 9, and when the temperature reaches a level that will not cause burns even if a person touches the heater 8, the blowing means 1o is turned on.
The control circuit section 12 operates so that the motor automatically stops.

In these embodiments, an electric stove using resistance heat such as a nichrome wire is shown as the heater 8, but the heater 8 may also be an induction heating coil using electromagnetic induction heating, or other heaters such as a ceramic heater. .

Effects of the Invention As is clear from the above description of the embodiments, the present invention reduces the temperature of the heater by operating the air blowing means after the heater is switched off until the temperature of the heater reaches a temperature that does not pose a risk of burns. Since the temperature can be lowered quickly, dangers such as burns can be eliminated. Furthermore, if you want to continue cooking, by detecting the presence or absence of a pot, you can disable the blower and continue cooking, making it possible to provide a safe and easy-to-use electric stove.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an electric stove according to a first embodiment of the present invention, FIG. 2 is a block diagram of a second embodiment of the same, and FIG. 3 is a block diagram of a conventional electric stove. be. 8... Heater, 9... Temperature detector (temperature detection means), 1o... Air blowing means, 11...
...Switch, 12... Control circuit section, 14...
...Pot detection switch. Name of agent: Patent attorney Akira Odaji and 2 others Figure 2.3. ' 8. 1 Top 1・ (Figure) − ゛(

Claims (2)

[Claims] (1) A heater that heats food, a switch that controls energization of the heater, a blower that blows air to the heater after the switch is opened, and a temperature detector that detects the temperature of the heater. An electric stove comprising: a control means for stopping the air blowing means when the temperature of the heater falls below a certain temperature. (2) The electric stove according to claim 1, further comprising a pot detecting means for detecting the presence or absence of a pot, and a control means for operating an air blower when detecting the absence of a pot.