JPS63249519A - 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, in such a conventional configuration, the magnetic plug (if the magnetic plug does not come off) continues to heat the water even if the main body falls over, the internal pressure increases and eventually There was a risk that hot water would leak out.

The present invention solves these problems, and provides an electric water heater that can reliably stop the heat generation of the heating element and notify the user of an abnormality if the main body falls over. The purpose is to provide the following.

Means for Solving the Problems In order to solve the above-mentioned 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, the control element that controls the energization of the heating element is turned off to stop the energization of the heating element, and the notification means issues a notification.

Function According to the above configuration, when the main body falls down, the electricity to the heating element is stopped, which prevents the hot water in the container from flowing out and also notifies the user that the main body has fallen down. be. ``Example'' An example of the present invention will be described below with reference to 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; 6 is a rigid detection means for detecting whether or not the main body 1 is tilted at a certain angle or more; 6 is an inclination. This printed circuit board 6 has a detection means 6 attached thereto, and this printed circuit board 6 is attached to the main body 1.

FIG. 2 shows a cross-sectional view of the main parts of the tilt detection means 6, where 7 is a reflective photosensor composed of an infrared LED 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 a steam water heater in a practical example of the present invention, in which 12 is an AC power supply, 13 is a boiling switch that detects that water has boiled, and 14 is a heating element 4. A control element that controls energization, and 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 5; 19 is a buzzer 20;
22 is an inverter 23°24, a transistor 26, a diode 26, a capacitor 27, a resistor 2B, a control means 29.30, and 31 is a constant voltage diode 32, a diode 33, an electrolytic A constant voltage power supply is constituted by a capacitor 34 and a resistor 36. A diode 37 absorbs the surge generated from the relay coil 15.

The primary operation in the above configuration will be explained. When the main body 1 is placed normally, the ball 10 is located at the center of the case 11 as shown by the solid line in FIG. The phototransistor 9 is turned on. In this case, since the base current flows through the transistor 25 through the resistor 28, the transistor 26 is turned ON.As a result, current flows through the relay coil 16 and the relay contact 16 is closed. Since the boiling switch 13 is closed until the water boils, the heating element 4 generates heat and heats the water in the container 2.

In this case, the output of the inverter 23 becomes HIGH, and the notification means 19 does not operate. On the other hand, if the main body 1 falls or falls, that is, if the angle is greater than θ (here, 15°), the ball 10 will move from the center of the case 11 to the end, as shown by the dashed line in FIG. Roll to. 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 pace current no longer flows through the transistor 26, so the transistor 26 is turned off, thereby cutting off the current to the relay coil 15, opening the relay contact 16, and stopping the heating element 4 from generating heat. Note that in this case, since the diode 26 becomes non-conductive, the output of the inverter 23 becomes LO.
This is a response to W-HIGH, and the buzzer 20 notifies you.

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 at a certain angle or more, and if the tilt of the main body detected by the tilt detection means is more than a certain angle, the control element that controls the energization of the heating element is turned off. Since the power to the heating element is stopped, there is no danger of the boiling water inside the container flowing out.As a result, it can be used safely even in homes with small children or pets. Since the notification is made by means of means, the user can easily know that the main body is in trouble or has fallen.

[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- Main body, 2 Special equipment, 3 Lid, 4
... Heating element, 5 ... Nuisance detection means, 14 ...
. . . Control element, 19. Notification means, 22. . . Control means. Name of agent: Patent attorney Toshio Nakao and 1 other person/-
-One Rice 2-One Ichiyon Rock, 3- Survey 7j1 Diagram 4-Bonsha Seitai 5- A Collection Detection Hand

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 for detecting whether or not the main body is tilted at a predetermined angle or more; a notification means for notifying by sound or light; If so, the electric water heater comprises a control means for turning off the control element and outputting a notification signal to the notification means.