JPS5849114A - Electric cooker - 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 The present invention relates to an electric cooker in which a pot is placed on a heating element, and the present invention is designed to prevent boiled liquid etc. adhering to the heating element from flowing into a heat-sensitive device that detects the temperature of the pot. A heat-sensitive device is designed to detect only the temperature of the pot, without being affected by the heat from the heating element. Conventionally, the surface of the heating element used in this type of cooker has been flat for reasons such as stability of the pot. However, in pressure cookers, etc., in order to withstand the internal pressure of the pot, it is necessary to limit the diameter, increase the thickness of the plate, etc., and make the material strong. If boiling liquid, etc. that spills over the body flows into an unspecified area below the outer periphery of the heating element, it will remain inside the main body and cause malfunctions such as abnormal heat generation, odor, and electrical leakage. This improves the strength of the pot and eliminates deformation of the heat transfer surface. With this configuration, the boiling liquid on the heating element naturally gathers in the center in many cases, and the outflow is very poor, so it is difficult to use a heat-sensitive device.

There was a risk that it would leak into important parts such as the heat-sensitive device and the lever of the safety switch that moves, causing problems such as malfunction or inoperability if the parts were stuck together.

Furthermore, the heat-sensitive device also senses heat from a heating element, so it has the disadvantage of malfunctioning.

Therefore, the present invention forms a groove in the heating element on the outer periphery of the heat-sensitive device mounting part, and provides a discharge hole at the bottom of this groove.
This is an attempt to eliminate the above-mentioned conventional drawbacks.

EMBODIMENT OF THE INVENTION Hereinafter, an electric pressure cooker showing one embodiment of the present invention will be described with reference to the accompanying drawings.

In the figure, 1 is a cylindrical main body, 2 is a protective frame fixed inside the main body 1, and has a through hole in the center of the bottom. 3 is a heating element that is fixed in the protective frame 2 and has a sheathed heater 3a cast therein, a through hole is provided in the center, a concave groove 3b is formed around this through hole, and a discharge hole 3C is formed at the bottom of the groove sb. A rib 3d is provided around the lower surface of the discharge hole 3c to drain water.

4 is a pot which is detachably placed on the heating element 3; 5 is a lid that airtightly covers the upper opening of the pot 4 via a para-young 6, and is provided with a pressure adjusting weight 7 and a lid knob 8. 9 is a heat-sensitive device that is in close contact with the bottom of the pot 4 and senses the temperature of the pot 4, and there is an interlocking plate 9 at the bottom.
It is housed in a heat-sensitive coos 10 having a capacity of 1 L and fixed to a through hole in the center of the five heating elements 3. A coil spring 11 is provided on the side between the heat-sensitive device 9 and the heat-sensitive case 10, and allows the heat-sensitive device 9 to move downward when the pot 4 is placed on the heating element 3 and rise when removed. 12 is an interlocking plate 9 of the heat-sensitive device 9
This is a safety switch equipped with a lever 13 that is inserted into the heat sensitive device 9 and interlocks with the heat sensitive device 9. As the heat sensitive device 9 moves up and down, the lever 13 moves the electrical contact portion of the safety switch 12ρ to turn on and off electricity to the heating element 3. . 14 is a control circuit unit that controls the power supply to the heating element 3 according to the temperature of the pot 4 sensed by the heat sensitive device 9; 16 is a control circuit unit fixed to the lower end of the main body 1, integrally having legs, and an opening serving as a ventilation hole in the upper part; 16IL'Ir: A circuit storage box made of synthetic resin with a drainage hole 16b provided at the bottom of the outer periphery, which stores the control circuit unit 14.

Reference numeral 16 denotes a heat shield plate that covers the entire upper part of the circuit storage box having the opening 15a to provide thermal protection for the control circuit unit 14 and to receive boiling liquid etc. from the upper part.

17 is a pot handle attached to both sides of the top of the pot 4, 18 is a main body handle attached to both sides of the top of the main body 1, and 19 is a timer 2.
This is a display board incorporating 0 etc.

In the above configuration, when spilled boiling liquid, etc. flows onto the heating element 3, the heat transfer surface of the heating element 3 is a downwardly concave spherical surface, so it naturally gathers in the center #) and forms around the heat-sensitive device 9. A through hole 3c that flows into the groove 3b and is provided at the bottom of the groove sb.
It drips onto the heat shield plate 16. The dripped broth and the like flow from the outer periphery of the heat shield plate 16 to the outer surface of the circuit storage box 16, and flow out from the drain hole 16b at the bottom.

As is clear from the above description, according to the present invention, a groove is formed in the heating element around the through hole in which the heat-sensitive device is located, so that the thermal conductivity from the heating element to the heat-sensitive device is deteriorated, and the heat-sensitive device is It is possible to accurately sense the temperature of the pan without being affected by the heat of the heating element.

Any boiling liquid that bubbles up on the heating element is collected in the groove.

Since it is discharged from the discharge hole, it does not reach the heat-sensitive device, and malfunctions of the heat-sensitive device can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of an electric pressure cooker showing an embodiment of the present invention, and FIG. 2 is a cross-sectional view of essential parts of the same. 3... Heating element, sb... Groove %3C...
...Discharge hole, 4...Pot, 9...Heat-sensitive device 0 Name of agent Patent attorney Satoshi Nakao and 1 other person Figure 1 Figure 2 Tonu

Claims (1)

[Claims] A through hole is provided in the center of the heating element on which the pot is placed, a heat sensitive device for sensing the temperature of the pot is arranged in this through hole, a groove is formed around the through hole of the heating element, and a discharge hole is provided in this groove. Electric cooker provided.