JPS63249518A - Electric pot - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electric water heater for boiling water in ordinary households.

BACKGROUND OF THE INVENTION Conventional electric water heaters stop heating water only when the main unit falls over or the magnetic plug comes off.

Problems to be Solved by the Invention However, with such a conventional configuration, if the magnetic plug does not come off, the water will continue to be heated even if the main unit falls over, increasing the internal pressure and eventually causing the boiling water to boil over. There was a fear that it might leak.

The present invention solves these problems, and aims to provide an electric water heater that can reliably stop the heat generation of the heating element when the main body falls over.

Means for Solving the Problems In order to solve the above problems, the electric water heater of the present invention is provided with a tilt detection means for detecting whether or not the main body is tilted at a certain angle or more. If the tilt of the main body exceeds a certain angle, a control element that controls energization of the heating element is turned off to stop energizing the heating element.

Function According to the above configuration, when the main body falls over, the electricity to the heating element is stopped, so that the hot water in the container can be prevented from flowing out.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings.

FIG. 1 shows a cutaway side view of an electric water heater according to an embodiment of the present invention, in which 1 is the electric water heater main body, 2 is a bottomed cylindrical container installed in the main body 1, and 3 is the main body. 1 is a lid that can be opened and closed at will; 4 is a heating element that heats the water in the container 2; 5 is a tilt detection means for detecting whether or not the main body 1 is tilted at a certain angle or more; 6 is a tilt detector A printed circuit board 6 is attached to the main body 1, and the means 5 is attached to the printed circuit board.

FIG. 2 shows a cross-sectional view of the main parts of the tilt detection means 5, in which 7 is a reflective photosensor composed of infrared LEDs and a phototransistor 9, and 10 is a highly reflective material such as alumina porcelain. The resulting ball 11 is a conical case made of resin with low reflectance.

FIG. 3 shows a circuit diagram of an electric water heater according to an embodiment of the present invention, in which 12 is an AC power source, 13 is a boiling switch that detects that water has boiled, and 14 is a device that controls energization of the heating element 4. The control element is composed of a relay coil 16 and a relay contact 16. 17 and 18 are resistors that are part of the components of the tilt detection means 6, and 19 is a transistor 2.
0. Control means constituted by a resistor 21, 22 a constant voltage diode 23, a diode 24, an electrolytic capacitor 26
, a constant voltage power supply composed of resistors 26 and 27, and 28 a diode that absorbs the surge voltage generated from the relay coil 15.

In the above configuration, the operation will be explained next. When the main body 1 is placed normally, the ball 1Q is located at the center of the case 11 as shown by the solid line in FIG. When the light is incident, the phototransistor 9 is turned on. In this case, since the pace current flows through the transistor 2o through the resistor 21, the transistor "20 becomes Oi'J L, so that the current flows through the relay coil 15 and the relay contact 1
6 closes. Since the boil switch 13 is closed until the water boils, the heating element 4 generates heat and heats the water in the container 2. On the other hand, if the main body 1 falls or tilts, that is, if it tilts more than θ (here, 16 degrees), the ball 1
0 rolls from the center of the case 11 toward the ends, as shown by the dashed line in FIG.

As a result, the infrared light from the infrared LEDs is absorbed by the case 11 and does not enter the phototransistor 9, so the phototransistor 9 is turned off. As a result, the base current no longer flows through the transistor 2o, so the transistor 2o is turned off, thereby cutting off the current to the relay coil 16, opening the relay contact 16, and stopping the heating element 40 from generating heat.

Effects of the Invention As is clear from the description of the above embodiments, according to the present invention,
A tilt detection means is provided to detect whether or not the main body is tilted at a certain angle or more, and if the tilt of the main body detected by the tilt detection means is at a certain angle or more, the control element that controls the energization of the heating element is turned off and heat is generated. Since electricity is turned off to the body, there is no danger of the hot water in the container spilling out, and as a result, it can be used safely even in homes with small children or beds.

[Brief explanation of drawings]

FIG. 1 is a cutaway side view of an electric water heater showing an embodiment of the present invention, FIG. 2 is a sectional view of the main parts of the electric water heater, and FIG.
The figure is a circuit diagram of the electric water heater. 1... Body, 2... Container, 3...
...Lid, 4...Heating element, 6...Tilt detection means, 14...Control element, 19...
control means. Name of agent: Patent attorney Toshio Nakao and 1 other person/-
,full pay? -Late Spring-i Fig. 1 4-Another Ara, f tree 5-Katare Kakiko died and 6 24

Claims (1)

[Claims] A main body, a bottomed cylindrical container installed in the main body, a lid that covers the upper opening of the main body so as to be openable and closable, a heating element that heats water in the container, and energization control of the heating element. a control element that detects whether or not the main body is tilted at a predetermined angle or more; and a tilt detection means that detects whether or not the main body is tilted at a predetermined angle or more;
An electric water heater equipped with a control means for FF.