CN2468404Y

CN2468404Y - Burned-proof and safety electric cooking vessel

Info

Publication number: CN2468404Y
Application number: CN 01212176
Authority: CN
Inventors: 骆维强
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-03-20
Filing date: 2001-03-20
Publication date: 2002-01-02
Anticipated expiration: 2011-03-20

Abstract

The utility model relates to an automatic electric cooker which is characterized in that a contact switch KZ which is arranged inside the pot body contacts cooking pot; the circuit of the electric cooker is characterized in that a contact switch KZ and a temperature detect switch are arranged in the primary loop; a branch circuit is parallel connected with the primary circuit and a cooking handle switch KS1, a relay switch KJ1 and the relay J are arranged on the branch circuit. The cooking handle switch KS1 is parallel connected with the relay switch KJ1, and a temperature limit switch RX is parallel connected with a relay switch KJ2 on the primary circuit. The utility model aims at solving the problem that the electric cooker can be burned down because of an unreasonable structure.

Description

The safe electric cooker of a kind of anti-burning

The utility model relates to a kind of electric cooker of automatically cooking rice.

Employed in the market electric cooker all is the CFXB type, is often in use burnt out, and a lot of people think that the heat-generating disc quality of electric cooker does not pass a test, or control circuit has problem, can not in time cut off the power supply when temperature is too high.The structural design that is electric cooker in fact is unreasonable: the pot body is that water evaporates is most in the pot inner bag by the heating of hand lever formula switch control heat-generating disc, and when the temperature of pot courage bottom reached 105 ℃, contact was started working at the overheated magnet steel of pot courage bottom.The magnet steel that is provided with in pot courage bottom is to be supported by a spring, and it contacts with the pot courage, and the pot courage is consistent with the temperature of magnet steel.If electric cooker is contained a lot of water or meal, heat-generating disc under the pot courage is heated to very high temperature, and pot courage and magnet steel more than 90 degree, heat-generating disc also can continue heating, and temperature continues to raise, cause electric cooker integral body overheated, be easy to like this plastic fittings of manual lever switch on the electric cooker is burnt, cause malfunctioning switch, even overheated magnet steel works on, can not disconnect electric shock, directly cause the pot body is burnt out.In the practice, this fault accounts for the ratio more than 80 percent in the electric cooker that needs repairing.Just so far, also there is not a kind of method to address this problem.

At problem set forth above, the utility model provides a kind of anti-burning safe electric cooker, and its purpose is to solve electric cooker owing to the structural unreasonable existing problem that causes burning out.

The utility model comes to be realized by the following technical programs:

The safe electric cooker of a kind of anti-burning, it includes a pot body, pot courage, heat-generating disc RW, temperature limiter RX, indicator lamp, switch and circuit etc., and it is characterized in that: be provided with a contact-making switch KZ in the pot body, it contacts with the pot courage; The feature of the circuit part of this electric cooker is to be provided with contact-making switch KZ and temp control switch KR on major loop; Branch road in parallel on major loop, this branch road is provided with the hand switch KS1 that cooks, relay switch KJ1, relay J, cook hand switch KS1 and relay switch KJ1 parallel connection; A relay switch KJ2 in parallel on major loop with temperature limiter RX.

Cook hand switch KS1, relay switch KJ1 also are provided with hand operated insulation K switch S2 on the branch road of relay J.

Advantage of the present utility model and effect:

This scheme is by the work of relay control heat-generating disc, has removed the hand lever switch, makes out of control by lever switch and possibility that cause the electric cooker heat-generating disc to burn out is thoroughly eliminated, thereby has improved the service life of electric cooker.Owing to adopt the work of two microswitch control electric cookers, be not subjected to hand lever formula switch must be arranged on the restriction of bottom of pot body position, this global design that electric cooker is developed in the future is a very big breakthrough.In addition, many people often forget when cooking and press the hand lever switch that electric cooker is to be in keeping warm mode all the time like this, has crossed and has noticed just that for a long time meal is living, and adopted electric cooker provided by the utility model, just such problem can not occur.

Accompanying drawing 1 is a circuit connecting relation schematic diagram of the present utility model.

The utility model is specifically described by embodiment below in conjunction with accompanying drawing:

In accompanying drawing 1, KZ is the switch that is subjected to electric cooker inner container control, and it is arranged on side or bottom in pot body, and is just closed when inner bag is put pot into.KR is a temp control switch, and KS1 is the manual microswitch of cooking, and often opens to automatically reset, KS2 is the hand operated insulation switch, normally closed automatically reseting, J is a relay, KJ1, KJ2 are relay switch, ZD1 is the indicator lamp of cooking, ZD2 is the insulation indicator lamp, and R1, R2 are dropping resistor, and RX is a temperature limiter, RW is a heat-generating disc, and RD is a fuse.

When KZ was closed, relay J did not load, and electric current forms the loop by heat-generating disc RW again through temperature limiter RX step-down, and electric cooker is in keeping warm mode.When the KS1 closure once, relay J is started working, KJ1 adhesive, relay J self-insurance, KJ2 adhesive, electric current directly are heated on the heat-generating disc RW, and heat-generating disc RW starts working, when electric cooker inner container is raised to uniform temperature, temperature switch KR opens, the electric cooker outage, and relay J discharges.Utilize the waste heat of heat-generating disc RW to be institute's cooking food insulation.

Through after a while, adhesive once more after the temperature switch cooling, because relay J discharges, KJ2 opens, electric cooker will be in keeping warm mode all the time.

In electric cooker was cooked process, insulation then touched KS2 one time if desired, and relay J promptly discharges, and electric cooker is in keeping warm mode.

Claims

1, the safe electric cooker of a kind of anti-burning, it includes a pot body, pot courage, heat-generating disc RW, thermostat RX, indicator lamp, switch and circuit etc., and it is characterized in that: be provided with a contact-making switch KZ in the pot body, it contacts with the pot courage; The feature of the circuit part of this electric cooker is to be provided with contact-making switch KZ and temp control switch KR on major loop; Branch road in parallel on major loop, this branch road is provided with the hand switch KS1 that cooks, relay switch KJ1, relay J, cook hand switch KS1 and relay switch KJ1 parallel connection; A relay switch KJ2 in parallel on major loop with temperature limiter RX.

2, the safe electric cooker of a kind of anti-burning according to claim 1, it is characterized in that: the hand switch KS1 that cooks, relay switch KJ1 also are provided with hand operated insulation K switch S2 on the branch road of relay J.