CN2580718Y

CN2580718Y - Automatic power-off device for timing and warm-keeping for electric rice cooker

Info

Publication number: CN2580718Y
Application number: CN 02222689
Authority: CN
Inventors: 张世荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-05-22
Filing date: 2002-05-22
Publication date: 2003-10-15
Anticipated expiration: 2012-05-22

Abstract

The utility model relates to an automatic power-off device for the timing and the heat insulation of an electric rice cooker, which belongs to a cooking utensil in a kitchen. The utility model is characterized in that a thermoswitch is connected between a power end and the common connecting point of a heat insulating electric heating wire and a heat insulating yellow display lamp; meanwhile, the edge of a power contact of the thermoswitch is also provided with a positioning contact for the circuit breakage of the thermoswitch. The electric rice cooker adopting the structure has the advantages of safe and convenient use and operation, electricity saving, high durability of the electric rice cooker and little probability of damage of a heating disc and other parts.

Description

The timing insulation auto-power-off device of electric rice cooker

One, technical field

The utility model belongs to the kitchen cooking utensil, particularly relates to the heating and the thermal circuit device of electric rice cooker.

Two, background technology

Electric rice cooker in the market, heat-generating disc produces high heat energy by electric current and cooks, and through switch transition, becomes keeping warm mode in the process of boiling; Change once more after the certain hour switch, heat-generating disc produces high heat energy again, so goes round and begins again staggered cooking of heating one insulation.The electric rice cooker of this prior art always is in "on" position in the process of boiling, if manually do not cut off the power supply, and not only power consumption, and also meal boils paste easily, also burns out heat-generating disc and other spare and accessory parts easily, inconvenient operation, and dangerous.

Three, summary of the invention

Goal of the invention of the present utility model just is the defective at prior art, and the heating and the thermal circuit device of electric rice cooker are transformed, and designs a kind of timing insulation auto-power-off device, makes electric rice cooker use easy-to-operate, power saving durable in use again.

Realize goal of the invention of the present utility model by the following technical solutions.

A kind of timing insulation auto-power-off device of electric rice cooker, comprise one by heating heating wire, add thermal display light resistance and heating the heating circuit that the red display lamp is in series, one by being incubated heating wire, insulation display lamp resistance and being incubated the insulation loop that yellow display lamp is in series, and starting switch, it is characterized in that:

1) at power supply and insulation heating wire be incubated between the common contact of yellow display lamp and be connected with a thermoswitch;

2) on the next door of the power contact of thermoswitch, also be provided with the set feeler that opens circuit.

When starting switch is closed, electric rice cooker heating heating wire begins heating power, the red display lamp is bright, thermoswitch touched and closes when meal boiled soon, at this moment be incubated heating wire and be in short-circuit condition, the magnetic cylinder of electric rice cooker separates with the pot body to treat to boil afterwards for meal fully, and starting switch disconnects, the red display lamp extinguishes, and expression heating heating wire stops heating power; Yellow display lamp is bright simultaneously, and expression insulation heating wire begins heating power.Add when boiling rice and water amount what, determining the length of temperature retention time, the rice and the water that promptly add are many, temperature retention time is just long, on the contrary temperature retention time is with regard to weak point.Thermoswitch can be regulated power supply and touch the time length of closing and disconnecting, and when temperature of boiler drops to a certain degree, thermoswitch disconnects, and plug-in strip touches with the set feeler that opens circuit and closes, thereby realizes outage automatically, and whole electric rice cooker has not been worked.

Use the electric rice cooker of the utility model insulation auto-power-off device, external power receptacle can need not pull out for a long time, in electric rice cooker boiled process, the people can do other matter in home and need not manage it and just can cook fragrant and sweet good to eat rice, and power saving, electric rice cooker are durable in use.Adopt the electric rice cooker of the utility model structure, be particularly suitable for the old,weak,sick and disabled person and use.

Four, description of drawings

Accompanying drawing is the timing insulation auto-power-off device circuit diagram of the utility model electric rice cooker.

In the drawings: T1-heating heating wire T2-insulation heating wire R1-adds the yellow display lamp K1-of the thermal display light resistance R 2-insulation resistance W1-red display lamp W2-starting switch K2-thermoswitch 1-thermoswitch power contact 2-thermoswitch set feeler that opens circuit.

Five, embodiment

Below in conjunction with accompanying drawing, the utility model structure is done more specific description.A kind of timing insulation auto-power-off device of electric rice cooker, comprise one by heating heating wire T1, add thermal display light resistance R 1 and heating the heating circuit that red display lamp W1 is in series, one by being incubated heating wire T2, insulation display lamp resistance R 2 and being incubated the insulation loop that yellow display lamp W2 is in series, with starting switch K1, it is characterized in that: at power supply and insulation heating wire T2 be incubated between the common contact of yellow display lamp W2 and be connected with a thermoswitch K2; Next door at the power contact 1 of thermoswitch K2 also is provided with the set feeler 2 that opens circuit.

When starting switch K1 is closed, electric rice cooker heating heating wire T1 begins heating power, W1 is bright for the red display lamp, thermoswitch K2 touched and closes when meal boiled soon, at this moment be incubated heating wire T2 and be in short-circuit condition, the magnetic cylinder of electric rice cooker separates with the pot body to treat to boil afterwards for meal fully, and starting switch K1 disconnects, red display lamp W1 extinguishes, and expression heating heating wire T1 stops heating power; Yellow display lamp W2 is bright simultaneously, and expression insulation heating wire T2 begins heating power.Add when boiling rice and water amount what, determining the length of temperature retention time, the rice and the water that promptly add are many, temperature retention time is just long, on the contrary temperature retention time is with regard to weak point.Thermoswitch K2 can regulate power supply and touch the time length of closing and disconnecting, and when temperature of boiler dropped to a certain degree, thermoswitch K2 disconnected, and plug-in strip touches with the set feeler that opens circuit and closes, thereby realizes outage automatically.

Claims

1, a kind of timing of electric rice cooker insulation auto-power-off device, comprise one by heating heating wire (T1), add thermal display light resistance (R1) and heating the heating circuit that red display lamp (W1) is in series, an insulation loop that is in series by insulation heating wire (T2), insulation display lamp resistance (R2) and the yellow display lamp of insulation (W2), and starting switch (K1), it is characterized in that:

1) between the common contact of power supply and insulation heating wire (T2) and the yellow display lamp of insulation (W2), is connected with a thermoswitch (K2);

2) on the next door of the power contact (1) of thermoswitch (K2), also be provided with the set feeler that opens circuit (2).