JPS6162729A - Electric stove - Google Patents

Abstract

PURPOSE:To make a more sensitive detection of abnormal increase in temperature of an object (combustibles), turn off an energization and enable a prevention of occurrence of fire hayard, etc. by a method wherein a parabolic-shaped thermal collection part having a temperature sensor as a substantial focal point is arranged at a reflector plate. CONSTITUTION:In case that an object (combustibles) 10 is approached or covered during an energization of an electric stove, a temperature sensor 7 which is close to a guard 8 detects an abnormal temperature of the object (combustibles) 10 and turns off the energization. In this case, a thermal collection part 6 of parabollic-shape having a temperature sensor 7 at its substantial focul point is arranged at the rear part of the temperature sensor 7. With this arrangement, it is possible to collect a thermal radiation from the object of which temperature is abnormally increased, to make a more sensing operation and improve a safety of the sensing operation.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an electric stove that has a safety device that detects the temperature rise of an object heated by a heating element and prevents the occurrence of a fire or the like. .

Conventional structure and its problems In the past, a thermostat was installed as a means to prevent the occurrence of fires, etc. When flammable materials were hung on the stove, the temperature rise inside the electric stove was detected and heat was generated. OF the body
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However, the thermostat does not operate unless the temperature inside the electric stove rises, so it does not function as a safety device when there is an object (flammable) in front of it, and it is not suitable as a safety device for fire prevention. F-ko.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems and provides a highly safe electric stove.

Structure of the Invention In order to achieve the above-mentioned objects, the electric stove of the present invention includes a heating element, a front reflector located behind the heating element, and a heating element that directly controls the temperature rise of an object heated by the heating element. or indirectly (a temperature sensor for detecting this and a temperature sensor installed on the reflective plate)
When the temperature of the object increases abnormally and the temperature of the object increases, the signal of the temperature sensor (from this, iiJ
The heating element is provided with an electric circuit for turning off the heating element, and the temperature sensor is located approximately at the focal point of the heat collecting section.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of one embodiment of the present invention, and FIG. 2 is a front view of one embodiment of the present invention.
It is a sectional view of the center of the figure.

In FIGS. 1 and 2, 1 is made of insulating ceramic 2,
3 is a front reflector located at the rear of the heating element 1, which releases the heat of the heating element J through the opening of the main body 4. 5 is a heating element held at both ends. It is a side plate and also serves as a leg. 6 is a parabolic heat collecting part with the temperature sensor 7 as its approximate focal point, and is provided in a part of the front reflecting plate 3 and is close to the guard 8.

Reference numeral 9 indicates a change-over switch for turning ON/OFF energization, and 1o indicates an object (combustible material).

The third effect of the above configuration will be explained below.

In FIG. 1, when an object (combustible material) 10 approaches or covers the electric stove while the electric heater is energized, a temperature sensor 7 that is close to the guard 8 detects the abnormal temperature of the object (combustible material) 10. It's too late to turn off the power.

In other words, by providing a parabolic heat collecting part 6 behind the front self-temperature sensor 7, which has a substantially focal point above this temperature, the abnormal G temperature will rise and the heat from the object will be absorbed. Radiation can be collected by the temperature sensor, allowing for more sensitive detection and increased safety.

Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

By installing a parabolic heat collecting part on the reflector plate with the temperature sensor as its approximate focal point, it more sensitively detects abnormal temperature rises in objects (combustible materials) and turns off the electricity, preventing the occurrence of fires, etc. It can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a front view of one embodiment of the present invention, and FIG. 2 is a sectional view at the center thereof. 1...Heating element, 3...Front reflector, 6...
Heat collecting section, 7...Temperature sensor, 8...Guard, 1o-...Target (combustible material). Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2

Claims (1)

[Claims] a heating element, a front reflector located behind the heating element,
a temperature sensor that directly or indirectly detects a temperature rise of an object heated by the heating element; a parabolic heat collecting section provided on the reflection plate; The heating element is turned off by the signal from the temperature sensor.
an electric circuit, wherein the temperature sensor is located approximately at the focal point of the heat collecting section.