CN201213695Y

CN201213695Y - Automatic energy-saving incubation type electric rice cooker circuit

Info

Publication number: CN201213695Y
Application number: CNU2008200466105U
Authority: CN
Inventors: 杨日沛
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-18
Filing date: 2008-04-18
Publication date: 2009-04-01
Anticipated expiration: 2018-04-18

Abstract

The utility model relates to an automatic energy-saving and heat-insulating rice cooker circuit, which comprises a cooking switch, a relay, a warming tray, a kick temperature limiter, a heat-insulating piece and a heat-insulating switch, wherein the cooking switch is a normally open touch switch; the warming tray is provided with the kick temperature limiter; the relay is provided with four groups of binding posts, and each group of the binding posts are provided with two binding posts; the heat-insulating switch is a normally closed touch switch and is arranged between a binding post of a first group of relay coils and one end of a power supply source; and an automatic power changeover switch is connected in parallel on the side of a diode. The switch adopts a temperature control switch, controls and sets the temperature to below 95 to 99 DEG C, and is in the on state; and if the set temperature is exceeded, the switch automatically switches off the current and low-voltage current is inputted to the warming tray after the current undergoes half wave rectification of the diode, so as to achieve the aim of soup cooking or congee cooking at low power and low fire. The automatic energy-saving and heat-insulating rice cooker circuit guarantees normal operation of a rice cooker, has good cooking effect, is simple and convenient to assemble, and saves electricity and energy.

Description

A kind of automatic energy saving heat preserving type electric cooker circuit

Technical field

The utility model relates to a kind of control circuit that is used for electric cooker.

Background technology

Existing electric cooker control circuit, generally be that switch enclosure and rod, magnetic steel temperature limiter are cascaded, when opening the rice cooker switch box, the electric cooker circuit is connected, produce electric current, under the function of current, rod promotes the thimble of magnetic steel temperature limiter, makes magnetic sheet in the magnetic steel temperature limiter produce magnetic field and attracts each other, under the effect of suction, magnetic sheet is held rod, and rod further makes the contact of steel disc contact, thereby makes the circuit of electric cooker form the loop and carry out work.When the temperature of magnetic steel temperature limiter reaches one regularly, the magnetic sheet in the magnet steel is in the loss of excitation state, and inner spring separates magnetic sheet, and the thimble of magnetic steel temperature limiter promotes rod, makes the steel disc contact separately, and electric cooker is in keeping warm mode.But so there is following defective in the electric cooker control circuit: the first, because rod directly is connected with switch enclosure, magnetic steel temperature limiter, and magnetic steel temperature limiter conducts heat in switch enclosure by rod, and the switch enclosure temperature distortion, thus make the electric cooker cisco unity malfunction; The second, magnetic steel temperature limiter is under working for a long time, and the magnetic force of magnetic steel temperature limiter magnetic sheet slowly weakens, and makes magnetic sheet and rod often continue out, and causes electric cooker to be in keeping warm mode, influences the effect of cooking.

In addition, higher by the heat preserving type electric cooker price of computer control at present, be not easy to popularize; The line construction that price is more cheap is simple, and power can not be regulated because of needs, and energy-saving effect is not good.

The purpose of this utility model proposes a kind ofly can overcome above-mentioned prior art deficiency exactly, and price is cheap, simple, the energy-conservation electric cooker control circuit of line construction.

For achieving the above object, the utility model provides a kind of automatic energy saving heat preserving type electric cooker circuit, comprise the switch of cooking, relay, heat-generating disc, the Kick type temperature limiter, insulation sheet and insulation switch, cook switch for often opening touch-switch, heat-generating disc is equipped with the Kick type temperature limiter, described relay has four winding terminals, every group possesses two binding posts, the insulation switch is normally closed touch-switch, be arranged between the end of binding post of the first group relay coil and power supply, at diode next door power automatic change-over in parallel, this switch adopts the temperature control switch, and temperature control is set in 95 ℃ to being in on-state below 99 ℃, if surpass design temperature, this switch cuts off electric current automatically, and electric current reaches small-power low baking temperature Baoshang or pot congee to heat-generating disc input low-tension current after by the diode halfwave rectifier.

Also comprise the insulation sheet, described relay also has the 4th winding terminal, and the 4th group is the normally closed stationary contact binding post of relay, and a binding post of the normally closed stationary contact of the 4th group relay is unsettled, and another binding post connects an end of power supply through the insulation sheet.

Also be provided with the insulation switch, this insulation switch is normally closed touch-switch, is arranged between the other end of another binding post of the first group relay coil and power supply.

Boil state in order to indicate electric cooker to be in pot, can also be provided with cook the indication current-limiting resistance and the indicator lamp of cooking, being attempted by after cook the indication current-limiting resistance and the indicator lamp series connection of cooking on an end of power supply and another binding post that the 3rd group relay is often opened stationary contact.

In order to indicate electric cooker to be in keeping warm mode, can also be provided with insulation indication current-limiting resistance and insulation indicator lamp, be attempted by after insulation indication current-limiting resistance and the series connection of insulation indicator lamp on another binding post of end of power supply and the normally closed stationary contact of the 4th group relay.

The utility model touch-switch, relay, Kick type temperature limiter replace switch enclosure, rod, the magnetic steel temperature limiter of prior art, play following effect:

1, touch-switch of the present utility model just is connected with relay, Kick type temperature limiter by electric wire, does not directly contact with heater members, so it is not high to be heated, is not easy to produce distortion, thereby prolongs the electric cooker working time.

What 2, the utility model adopted is the Kick type temperature limiter, is not subjected to the influence of magnetic force, thereby guarantees the electric cooker operate as normal.

3, the utility model assembling is simple, convenient, during assembling, can adopt the electric wire mode of plugging into fully, touch-switch, relay, Kick type temperature limiter are coupled together with electric wire, electric wire can form circuit loop after connecting, do not need the assembler to debug the contact as traditional electric cooker again, the quality instability of having avoided assembler's general idea to be caused.

4, the power automatic change-over is worked automatically, the power saving that saves time of saving trouble.

Description of drawings:

Accompanying drawing is the circuit diagram of the utility model embodiment.

The specific embodiment:

The CONSTRUCTED SPECIFICATION of the utility model embodiment is described in detail in detail below in conjunction with accompanying drawing:

As shown in Figure 1, the utility model embodiment, comprise the K switch 1 of cooking, insulation K switch 2, relay J, heat-generating disc F, Kick type temperature limiter X, insulation sheet B, indication current-limiting resistance R1 cooks, indicator lamp L1 cooks, insulation indication current-limiting resistance R2 and insulation indicator lamp L2, the K switch of cooking 1 is for often opening touch-switch, insulation K switch 2 is normally closed touch-switch, heat-generating disc F is equipped with Kick type temperature limiter X, relay J has four winding terminals, every group possesses two binding posts, first group is relay coil binding post 1-1,1-2, second group is relay movable contact binding post 2-1,2-2, the 3rd group is relay normally open stationary contact binding post 3-1,3-2, the 4th group is the normally closed stationary contact binding post of relay 4-1,4-2, after one binding post 1-1 of the first group relay coil connects a binding post 2-1 of the second group relay movable contact, an end E1 who connects communication power supply 220V again through the K switch 1 of cooking, another binding post 1-2 of the first group relay coil connects the other end E2 of communication power supply 220V through insulation K switch 2, another binding post 2-2 of the second group relay movable contact also connects the other end E2 of communication power supply 220V, the binding post 3-1 that the 3rd group relay is often opened stationary contact connects the terminals F1 of heat-generating disc F and the end E1 of communication power supply 220V through Kick type temperature limiter X, another binding post 3-2 connects another terminals F2 of heat-generating disc F, one binding post 4-1 of the normally closed stationary contact of the 4th group relay is unsettled, and another binding post 4-2 connects the end E1 of communication power supply 220V through insulation sheet B.Cook and be attempted by after the indication current-limiting resistance R1 and the indicator lamp L1 series connection of cooking on the end E1 of communication power supply 220V and another binding post 3-2 that the 3rd group relay is often opened stationary contact.Be attempted by after insulation indication current-limiting resistance R2 and the insulation indicator lamp L2 series connection on another binding post 4-2 of end E1 of communication power supply and the normally closed stationary contact of the 4th group relay.Be attempted by after diode V, temperature detect switch (TDS) K3 and the normally closed touch-switch K4 parallel connection between the end E2 and insulation K switch 2 of communication power supply.

The operation principle of the utility model embodiment below is described in detail in detail:

After connecting communication power supply 220V, press the K switch 1 of cooking, the K switch of cooking 1 is connected, the relay J first winding terminal 1-1,1-2 is communicated with communication power supply 220V, the relay J coil electricity, produce magnetic field, the suction that magnetic field produces makes second group of movable contact of relay J often open stationary contact and contact i.e. binding post 2-1 and binding post 3-1 connection, binding post 2-2 and binding post 3-2 connection with the 3rd group, heat-generating disc F heating power, the indicator lamp L1 that cooks is bright, at this moment, if loose one's grip, promptly do not continue to press the K switch 1 of cooking, the K switch of cooking 1 is recovered off-state, and communication power supply 220V continues as the relay J coil power supply by Kick type temperature limiter X, and heat-generating disc F keeps "on" position, the heat that heat-generating disc F produces is transmitted to pot heart, forms rice-cooking function.When pot boils to a certain degree, when the temperature of electric cooker heat-generating disc F is too high, Kick type temperature limiter X disconnects, the relay J coil blackout, magnetic field disappears, second group of movable contact of relay J often opened stationary contact and separated with the 3rd group, and contacts with the 4th group of normally closed stationary contact, and promptly binding post 2-1 and binding post 3-1 disconnect, and connect with binding post 4-1, binding post 2-2 and binding post 3-2 disconnect, and connect heat-generating disc F outage with binding post 4-2, stop heating, the indicator lamp L1 that cooks goes out, and represents electric cooker pot to boil end, cooked.At this moment, insulation sheet B energising, L2 is bright for the insulation indicator lamp, and the air by in the insulation sheet B heating electric rice cooker makes electric cooker be in keeping warm mode.

Boil in the process at electric cooker pot, if thinking to stop at any time pot boils, enter keeping warm mode, then can press insulation K switch 2, insulation K switch 2 disconnects the relay J coil blackout, second group of movable contact of relay J contacts with the 4th group of normally closed stationary contact, heat-generating disc F outage, insulation sheet B energising, electric cooker enters keeping warm mode.At this moment, even loose one's grip, do not continue to press insulation K switch 2, insulation K switch 2 is recovered on-states, but the relay J coil can't switch on, and electric cooker keeps keeping warm mode.

If need Baoshang or pot congee, only need press normally closed touch-switch K4, to work automatically by the power automatic change-over, alternating current becomes low-voltage DC and supplies with heat-generating disc after diode V rectification, play the energy saving effect.

Claims

1, a kind of automatic energy saving heat preserving type electric cooker circuit, comprise the switch of cooking, relay, heat-generating disc, the Kick type temperature limiter, insulation sheet and insulation switch, cook switch for often opening touch-switch, heat-generating disc is equipped with the Kick type temperature limiter, described relay has four winding terminals, every group possesses two binding posts, the insulation switch is normally closed touch-switch, be arranged between the end of binding post of the first group relay coil and power supply, it is characterized in that: at diode next door power automatic change-over in parallel, this switch adopts the temperature control switch, temperature control is set in 95 ℃ to being in on-state below 99 ℃, if surpass design temperature, this switch cuts off electric current automatically, and electric current reaches small-power low baking temperature Baoshang or pot congee to heat-generating disc input low-tension current after by the diode halfwave rectifier.

2, automatic energy saving heat preserving type electric cooker circuit according to claim 1, it is characterized in that: also comprise the insulation sheet, described relay also has the 4th winding terminal, the 4th group is the normally closed stationary contact binding post of relay, one binding post of the normally closed stationary contact of the 4th group relay is unsettled, and another binding post connects an end of power supply through the insulation sheet.

3, control circuit according to claim 2 is characterized in that: also be provided with the insulation switch, this insulation switch is normally closed touch-switch, is arranged between the other end of another binding post of the first group relay coil and power supply.