CN2708351Y

CN2708351Y - Electric cooker power-saving device

Info

Publication number: CN2708351Y
Application number: CN 200420033630
Authority: CN
Inventors: 钟德永
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-05-17
Filing date: 2004-05-17
Publication date: 2005-07-06
Anticipated expiration: 2014-05-17

Abstract

The utility model relates to an electric cooker power-saving device, comprising a temperature sensor (3) and a power-saving controller (4), which is characterized in that the temperature sensor is provided with a thermistor (Rt). A positive going input end of an integration voltage comparator (IC1) in a two cores lead wire and the power-saving controller is connected with a negative electrode of a power. The power-saving controller(4) is provided with a circuit board which is composed of a power return circuit, a temperature sensor return circuit, a temperature control execute return circuit and a timing heat preservation return circuit. The temperature sensor (3) which is connected with the power-saving controller(4) is fixed on an electric cooker cap(2) in use. The power-saving controller is connected in series with the electric cooker together. Rice, soup and porridge can be cooked when the power is on. The power can be saved 30% without any changing to the original electric cooker. Performance and service life of the electric cooker obtain an obvious improvement.

Description

Power Saving Device of Rice Cookers

One, technical field

The utility model belongs to the accessory of heating equipment, particularly the battery saving arrangement of electric cooker.

Two, background technology

At present, electric cooker model on the market is various, function is different, the cost performance difference is very big, the price differential of high-grade luxury electric cooker and plain edition electric cooker reaches 3-6 doubly, at the low-grade electric cooker of the low-cost plain edition of the most salable meal that still only is used to stew of China, purchase total amount and estimate more than tens million of.Such electric cooker from beginning to be heated to the overall process of boiling, does not stop the power consumption heating always when cooking, could deenergization after the bottom of a pan produces crispy rice.Be energized to outage from manual keyswitch and be mechanical system, therefore can only once heat the thing that boils.This once electric cooker of heating, a large amount of energy are scattered and disappeared by steam, not only waste electric power but also waste grain, and cause heating plate overheated easily, damage electric elements, shorten the serviceable life of electric cooker; Also overflow pastel during meal easily with its pot, if cook congee or during Baoshang, spillover is more serious with it.

Three, summary of the invention

Defective at above-mentioned electric cooker existence, propose a kind of Power Saving Device of Rice Cookers of meter, meal, Baoshang or cook congee only need during use just can stew on the existing electric cooker with its serial connection, it can make electric cooker significantly economize on electricity, can guarantee the cooking quality of electric cooker again, make cooking food not tie crispy rice, not overflow, and have timing, heat insulation function, thereby significantly improve the usability and the serviceable life of plain edition electric cooker.

The technical scheme that the utility model product is adopted is as follows:

A kind of Power Saving Device of Rice Cookers includes temperature sensor and electricity-saving controller, it is characterized in that: be provided with thermistor in the temperature sensor, link to each other with power cathode with integrated voltage comparator positive input in the electricity-saving controller with two core leads; Be provided with in the electricity-saving controller by electric power loop, temperature sensor loop, temperature control and carry out the loop and regularly be incubated the circuit board that the loop is formed.Its feature also is: the electric power loop of circuit board is made up of decompression capacitor, rectifier bridge, stabilivolt and filter capacitor, changes the 220V alternating voltage into electricity-saving controller needed direct-current working volts; The integrated voltage comparator input circuit that the temperature sensor loop of circuit board is made up of resistance and adjustable resistance, and the integrated voltage comparator output loop of forming by resistance, anti-tampering electric capacity and triode; Temperature control is carried out the loop and is made up of heating plate in electromagnetic switch, the electric cooker and power supply input lead; Regularly being incubated the loop is made up of adjustable resistance, timing capacitor, stabilivolt, resistance, integrated voltage comparator, triode and timing selecting switch.

The Power Saving Device of Rice Cookers of the utility model structure, in use, to be fixed on electric cooker with the temperature sensor that two core leads link to each other with electricity-saving controller covers, and as attachment plug electricity-saving controller and electric cooker are serially connected with original electric cooker attaching plug, energized, just can stew meal, Baoshang or cook congee; Need not do any change to original electric cooker and just can economize on electricity about 30%; Because a food boiling back electricity-saving controller cuts off heating power supply automatically in the pot, so food can not overflow in pot, and caking (being crispy rice) can not burnt with food because of temperature control in the bottom of a pan yet; And rice is softer good to eat through the meal that boils after the heating for multiple times, heat release; Battery saving arrangement of the present utility model has regularly heat insulation function to electric cooker, and pot meal, Baoshang and cook congee all very conveniently and can protect the heating plate of existing electric cooker unlikely overheated effectively, and the usability of electric cooker and serviceable life are significantly improved.

Four, description of drawings

Fig. 1 is the general structure synoptic diagram that the utility model Power Saving Device of Rice Cookers and electric cooker coupling are used;

Fig. 2 is the circuit principle structure synoptic diagram of the utility model Power Saving Device of Rice Cookers.

In the drawings, 1-electric cooker main body 2-electric cooker lid 3-temperature sensor 4-electricity-saving controller 5-attachment plug 6-attaching plug;

R-heating plate (in electric cooker) J _K-electromagnetic switch C-decompression capacitor T-rectifier bridge D-diode DZ ₁, DZ ₂, DZ ₃-stabilivolt R ₁-R ₉-resistance R W ₁, RW ₂, RW ₃-adjustable resistance C ₁-timing capacitor C ₂-filter capacitor C ₃-anti-tampering capacitor I C ₁, IC ₂-integrated voltage comparator BG ₁, BG ₂-triode Kt-timing selecting switch A, B-potential reference point Rt-thermistor

Five, embodiment

Further specify the concrete structure of the utility model Power Saving Device of Rice Cookers and its principle of work below in conjunction with accompanying drawing.

A kind of Power Saving Device of Rice Cookers includes temperature sensor 3 and electricity-saving controller 4, it is characterized in that: be provided with thermistor Rt in the temperature sensor 3, with the integrated voltage comparator IC in two core leads and the electricity-saving controller 4 ₁Positive input links to each other with power cathode; Be provided with in the electricity-saving controller 4 by electric power loop, temperature sensor loop, temperature control and carry out the loop and regularly be incubated the circuit board that the loop is formed.Its feature also is: the electric power loop of circuit board is by decompression capacitor C, rectifier bridge T, stabilivolt DZ ₂With filter capacitor C ₂Form, the 220V alternating voltage is dropped to electricity-saving controller 4 needed direct-current working volts; The temperature sensor loop of circuit board is by resistance R ₁, R ₂, Rt and adjustable resistance RW ₁The integrated voltage comparator IC that forms ₁Input circuit, and by resistance R ₃, R ₄, anti-tampering capacitor C ₃With triode BG ₁The integrated voltage comparator IC that forms ₁Output loop; Temperature control is carried out the loop by electromagnetic switch J _K, heating plate R and power supply input lead are formed in the electric cooker; Regularly be incubated the loop by adjustable resistance RW ₂, RW ₃, timing capacitor C ₁, stabilivolt DZ ₁, resistance R ₅, R ₆, R ₇, R ₈, R ₉, integrated voltage comparator IC ₂, triode BG ₂Form with timing selecting switch Kt.

The principle of work of the Power Saving Device of Rice Cookers of the utility model structure is: by the electric power loop output low-voltage dc power supply of surface-mounted integrated circuit, supply with integrated voltage comparator IC ₁And IC ₂, triode BG ₁And BG ₂Operating voltage; When thermistor Rt was at normal temperature in the temperature sensor, resistance was bigger, makes IC ₁A point current potential be higher than B point current potential, work as IC ₁End when current potential is higher than reverse potential IC ₁The output noble potential makes BG ₁Conducting, electromagnetic switch J _KConducting, the heating plate R in the electric cooker begins the electric cooker heating, treats boiling in the pot after a period of time, produces steam and makes that thermistor Rt temperature raises in the temperature sensor on the pot cover, and resistance is with the linear reduction of increase in temperature; By adjustable resistance RW ₁Set the voltage drop (being A point current potential) on the Rt of boiling back in the pot, make A point current potential be lower than B point current potential, IC ₁The reverse input end resistance value is higher than IC ₁Positive input, output electronegative potential, BG ₁End J _KTurn-off, thereby close heating power supply, utilize the bottom of a pan waste heat to be incubated a period of time; After treating that kettle temperature is reduced to below the boiling point, quantity of steam reduces, and the thermistor temp on the pot cover descends resistance value is increased, and increasing falls in the Rt terminal voltage, is directed at A point current potential and is higher than B point current potential, BG ₁Conducting, J _KConducting recovers heating; So go round and begin again to rice and boil, by regularly being incubated loop regulation and control heating power supply being incubated in the pot.

Regularly being incubated circuit's principle is: after timing selecting switch closes, by adjustable resistance RW ₂Different resistances and timing capacitor C ₁Combination obtains different time-delays, RW ₂Promptly play the effect of timing setting device; After setting, positive supply is through RW ₂, R ₅To C ₁Charging, C when arriving setting-up time ₁Anodal current potential rises and makes stabilivolt DZ ₁Puncture integrated voltage comparator IC ₂Positive input is higher than reverse input end, and the output noble potential makes triode BG through Kt ₂Conducting, adjustable resistance RW ₃In parallel with Rt, the Rt terminal voltage reduces (being that A point current potential reduces), RW ₃The comprehensive resistance value reduction of resistance after selecting to make it and Rt is in parallel.Rt must treat that temperature reduces to that the pressure drop of its generation just can make A point current potential be higher than B point current potential when lower, and the heat insulation work process is similar when cooking, and the temperature of insulation can be by RW ₂Set.

Claims

1, a kind of Power Saving Device of Rice Cookers includes temperature sensor (3) and electricity-saving controller (4), it is characterized in that:

1) is provided with thermistor (Rt) in the temperature sensor (3), with the integrated voltage comparator (IC in two core leads and the electricity-saving controller (4) ₁) positive input links to each other with power cathode;

2) be provided with in the electricity-saving controller (4) by electric power loop, temperature sensor loop, temperature control and carry out the loop and regularly be incubated the circuit board that the loop is formed.

2, according to the described Power Saving Device of Rice Cookers of claim 1, the electric power loop that it is characterized in that circuit board is by decompression capacitor (C), rectifier bridge (T), stabilivolt (DZ ₂) and filter capacitor (C ₂) form, change the 220V alternating voltage into electricity-saving controller (4) needed direct-current working volts.

3, according to the described Power Saving Device of Rice Cookers of claim 1, the temperature sensor loop that it is characterized in that circuit board is by resistance (R ₁, R ₂, Rt) and adjustable resistance (RW ₁) integrated voltage comparator (IC that forms ₁) input circuit, and by resistance (R ₃, R ₄), anti-tampering electric capacity (C ₃) and triode (BG ₁) integrated voltage comparator (IC that forms ₁) output loop.

4,, it is characterized in that temperature control execution loop is by electromagnetic switch J according to the described Power Saving Device of Rice Cookers of claim 1 _K, heating plate (R) and power supply input lead composition in the electric cooker.

5,, it is characterized in that regularly being incubated the loop by adjustable resistance (RW according to the described Power Saving Device of Rice Cookers of claim 1 ₂, RW ₃), timing capacitor (C ₁), stabilivolt (DZ ₁), resistance (R ₅, R ₆, R ₇, R ₈, R ₉), integrated voltage comparator (IC ₂), triode (BG ₂) and timing selecting switch (Kt) composition.