CN102880070B - Device for controlling electric pressure cooker - Google Patents

Device for controlling electric pressure cooker Download PDF

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Publication number
CN102880070B
CN102880070B CN201210353177.0A CN201210353177A CN102880070B CN 102880070 B CN102880070 B CN 102880070B CN 201210353177 A CN201210353177 A CN 201210353177A CN 102880070 B CN102880070 B CN 102880070B
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China
Prior art keywords
control
temperature
signal
electric pressure
control panel
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CN201210353177.0A
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Chinese (zh)
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CN102880070A (en
Inventor
柏长升
黎才振
陈正超
钟石刚
苏雄
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格力电器(中山)小家电制造有限公司
珠海格力电器股份有限公司
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Priority to CN201210353177.0A priority Critical patent/CN102880070B/en
Publication of CN102880070A publication Critical patent/CN102880070A/en
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Abstract

The invention discloses a device for controlling an electric pressure cooker, which comprises a heating plate, a control board and an induction controlling switch; wherein a relay switch is arranged between an L1 interface and an L2 interface on the control board; the L2 interface is connected with one end of a power supply; the L1 interface is connected with one end of the heating plate; the other end of the heating plate is connected with the other end of the power supply; a first signal is sent to the control board when the pressure of the induction controlling switch in the cooker is higher than a first pressure value, and the relay switch is conducted when the first signal is received by the control board; the induction controlling switch is used for sending a second signal to the control board after sending the first signal when the temperature in the cooker is higher than a first temperature value and used for sending a third signal to the control board when the temperature in the cooker is lower than the first temperature value; after receiving the second signal, the control board is used for disconnecting the relay switch, and is used for conducting the relay switch while receiving the third signal. According to the technical scheme, the problem that the existing electric pressure cooker fails to realize boiling in the cooking process is solved.

Description

A kind of control device for electric pressure cooker

Technical field

The present invention relates to small household appliances and manufacture field, particularly relate to a kind of control device for electric pressure cooker.

Background technology

Existing electric pressure cooking saucepan generally all uses hermetically sealedly cooks without boiling mode.In this mode, in cooking process, food does not roll; Cannot reach fluidized state because of the sealing in pot, the rice meeting burnt hair therefore cooked, and the mouthfeel of rice is fragrant not strongly fragrant.

In sum, existing electric pressure cooking saucepan can only use hermetically sealedly cooks without boiling mode, thus cannot reach boiling.

Summary of the invention

The invention provides a kind of control device for electric pressure cooker, hermetic mode can only be used to cook to solve existing electric pressure cooking saucepan, thus cannot reach the problem of boiling.

The invention discloses a kind of control device for electric pressure cooker, this control device for electric pressure cooker comprises: heat-generating disc, control panel and induction gauge tap; Wherein, described control panel is provided with L1 interface and L2 interface; L2 interface connects with one end of power supply; L1 interface connects with one end of heat-generating disc, and the other end of heat-generating disc connects with the other end of power supply; Relay switch is provided with between L1 interface and L2 interface; The pressure of induction gauge tap in electric pressure cooking saucepan sends the first signal higher than during the first force value to control panel, and control panel, when receiving the first signal, controls relay switch and connects; Induction gauge tap is after transmission first signal, and the temperature in electric pressure cooking saucepan sends secondary signal higher than during the first temperature value to control panel, and the temperature of induction gauge tap in electric pressure cooking saucepan sends the 3rd signal lower than during the first temperature value to control panel; Control panel, when receiving secondary signal, controls relay switch and disconnects; Control panel, when receiving the 3rd signal, controls relay switch and connects.

In said apparatus, the temperature of induction gauge tap further in electric pressure cooking saucepan sends the first signal higher than during the second temperature value to control panel, the temperature of induction gauge tap further in electric pressure cooking saucepan sends secondary signal higher than during the 3rd temperature value to control panel, and the temperature of induction gauge tap further in electric pressure cooking saucepan sends the 3rd signal lower than during the 3rd temperature value to control panel.

In said apparatus, described control device for electric pressure cooker also comprises: temperature control timer and pressurize timer; Control panel, after receiving the first signal, starts temperature control timer; Control panel, after temperature control timer zero, starts pressurize timer, and control panel, after pressurize timer zero, controls relay switch and disconnects.

In said apparatus, described induction gauge tap sends four signal higher than during protection temperature value to control panel at Voltage force kettle temperature, and control panel, when receiving the 4th signal, controls relay switch and disconnects.

In said apparatus, described control device for electric pressure cooker also comprises: hummer; Wherein, control panel, when receiving the 4th signal, controls hummer work.

In said apparatus, described control device for electric pressure cooker also comprises: thermal fuse-link; One end of described thermal fuse-link is connected with one end of power supply, and the other end of thermal fuse-link is connected with L2 interface; Or one end of described thermal fuse-link is connected with the other end of power supply, the other end of thermal fuse-link is connected with one end of heat-generating disc, and the other end of heat-generating disc is connected with L1 interface.

In said apparatus, described induction gauge tap comprises pressure switch and temperature sensor; Wherein, temperature sensor is thermistor or thermal switch, and pressure switch is inching switch, bimetallic strip flashing switch or Temperature Control Type switch.

In said apparatus, described first force value is 40kpa ~ 60kpa, and described first temperature value is 145 DEG C ~ 155 DEG C, and the second temperature value is 130 DEG C ~ 140 DEG C, and the 3rd temperature value is 115 DEG C ~ 125 DEG C.

In said apparatus, the timing duration of described temperature control timer is 2min ~ 10min; The timing duration of described pressurize timer is 6min ~ 20min.

In said apparatus, described control device for electric pressure cooker also comprises: display board; Described display board comprises multiple input stitch, and wherein, described stitch is connected with the signal output part of pressure switch, temperature sensor, microswitch, hummer or relay switch respectively.

In sum, a kind of control device for electric pressure cooker provided by the invention, control panel in this control device for electric pressure cooker is according to the connection of the relay switch between the first signal control L1 branch road received and L2 branch road, control relay switch according to the 3rd signal received to disconnect, control relay switch according to the secondary signal received and connect; So repeatedly realize micro-boiling of cooking process.Control device for electric pressure cooker provided by the invention, uses less components and parts just can realize the cooking function of micro-boiling.Make in the intermittent micro-boiling of cooking process full stage; Cook the rice taken more even, can not burnt hair, improve the mouthfeel of rice.

Accompanying drawing explanation

Fig. 1 is the circuit theory diagrams of the present invention by a kind of control device for electric pressure cooker;

Fig. 2 is the circuit theory diagrams of a kind of relay switch in the present invention;

Fig. 3 is the detailed circuit schematic diagram of a kind of control device for electric pressure cooker in the present invention;

Fig. 4 is the circuit theory diagrams of a kind of hummer in the present invention;

Fig. 5 is the circuit theory diagrams of a kind of digital circuit power source in the present invention;

Fig. 6 is the structural representation of a kind of display board in the present invention;

Fig. 7 is the workflow diagram of a kind of control device for electric pressure cooker in the present invention.

Embodiment

Core of the present invention is: the L2 interface of control panel connects with one end of power supply; L1 interface connects with one end of heat-generating disc, and the other end of heat-generating disc connects with the other end of power supply; And L1 interface and L2 interface between relay switch is set; The pressure of induction gauge tap in electric pressure cooking saucepan sends the first signal higher than during the first force value to control panel, the temperature of induction gauge tap in electric pressure cooking saucepan sends secondary signal higher than during the first temperature value to control panel, and the temperature of induction gauge tap in electric pressure cooking saucepan sends the 3rd signal lower than during the first temperature value to control panel; Control panel, when receiving the first signal, controls relay switch and connects; After receiving the first signal, when receiving secondary signal, control relay switch and disconnect; When receiving the 3rd signal, control relay switch and connect, until cooking process terminates.Namely by the different conditions in the pot that monitors, the break-make controlling relay switch according to unlike signal realizes the micro-fluidized state of continuous print.

Cardinal principle of the present invention adopts control panel and induction gauge tap to control jug with heating disk, when temperature in pot is higher than the first temperature value, pressure now in pot is higher than the threshold values of pressure limiting valve, then pressure limiting valve exhausting, pot inner pressure reduces, make food in pot reach micro-fluidized state, control panel controls heat-generating disc stopping heating simultaneously; When the temperature in pot is lower than the first temperature value, control panel controls heat-generating disc and continues heating, and the temperature and pressure in pot is all raised.Circulation like this, guarantees the full stage intermittent boiling of cooking process, and the rice cooked like this can not burnt hair, and more fragrant strongly fragrant.

Control device for electric pressure cooker provided by the invention is not limited to be applied to electric pressure cooking saucepan, can be applied to any household electrical appliance with pressure under cooking status.

For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.

In order to achieve the above object, technical scheme of the present invention is achieved in that

Embodiment one

Fig. 1 is the circuit theory diagrams of the present invention by a kind of control device for electric pressure cooker, as shown in Figure 1,

N-L is external AC power, R0 is heat-generating disc, and M is control panel, L1 and L2 represents the L1 interface that control panel M is provided with and L2 interface, and wherein, L2 interface connects with one end of power supply; L1 interface connects with one end of heat-generating disc, and the other end of heat-generating disc connects with the other end of power supply; Relay switch is provided with between L1 interface and L2 interface.Wherein, described induction gauge tap comprises: pressure switch K1 and temperature sensor K2; Wherein, temperature sensor K2 is thermistor or thermal switch; Pressure switch K1 is inching switch, bimetallic strip flashing switch or Temperature Control Type switch.

Wherein, P1, P2 are arranged on interface on control panel or slot, for the components and parts such as pressure switch, temperature sensor that grafting is external.

K1 is pressure switch, and its pressure in electric pressure cooking saucepan sends the first signal higher than during the first force value to control panel.

K2 is temperature sensor, and its temperature in electric pressure cooking saucepan sends secondary signal higher than during the first temperature value to control panel; Temperature in electric pressure cooking saucepan sends the 3rd signal lower than during the first temperature value to control panel.

According to actual conditions, described first force value and the first temperature value are set; Concrete, described first force value is 40kpa ~ 60kpa; Described first temperature value is 145 DEG C ~ 155 DEG C.

Under the micro-boiling mode of selection, control panel M is when receiving the first signal, and control relay switch and connect, heat-generating disc works on; After receiving the first signal, control panel M is when receiving secondary signal, and control relay switch and disconnect, heat-generating disc quits work; Control panel M is when receiving the 3rd signal, and control relay switch and connect, heat-generating disc works on.

Due in certain volume, temperature is directly proportional to pressure, therefore the temperature sensor of detected temperatures can be used as the inductor detecting pressure in electric pressure cooking saucepan.When temperature reaches the first temperature value, the pressure in pot reaches the threshold values of pressure limiting valve, is specially pressure in pot and reaches 70kpa ~ 100kpa.

In a particular embodiment of the present invention, described relay switch is the digital junction on-off circuit being arranged on control panel M inside.Fig. 2 is the circuit theory diagrams of a kind of relay switch in the present invention, as described in Figure 2, this relay switch is made up of triode and relay, when input end R receives the digital signal that outside gives (repeating signal Relay), pilot relay is connected heat-generating disc R0 place branch road or is disconnected heat-generating disc R0 place branch road.Wherein, described triode is the triode of S8050 type.In other embodiments of the invention, other relay switch circuit can be used, be not limited to that the embodiment of the present invention provides.

Embodiment two

In concrete use procedure, when the food in pot is too much, there will be pot inner pressure and do not reach the first force value, but the situation that food boils soon.In order to realize micro-boiling, the temperature of induction gauge tap further in electric pressure cooking saucepan sends the first signal higher than during the second temperature value to control panel, the temperature of induction gauge tap in electric pressure cooking saucepan sends secondary signal higher than during the 3rd temperature value to control panel, and the temperature of induction gauge tap in electric pressure cooking saucepan sends the 3rd signal lower than during the 3rd temperature value to control panel.

In the present embodiment, the pressure in electric pressure cooking saucepan does not reach the work threshold values of pressure switch K1, then the temperature sensor of serviceability temperature sensor K2 is as reference standard.When temperature in electric pressure cooking saucepan is higher than the second temperature value, temperature sensor K2 sends the first signal to control panel; When temperature in electric pressure cooking saucepan is higher than the 3rd temperature value, temperature sensor K2 sends secondary signal to control panel; When temperature in electric pressure cooking saucepan is lower than the 3rd temperature value, temperature sensor K2 sends the 3rd signal to control panel.Control panel controls accordingly according to the first signal received, secondary signal, the 3rd signal.Concrete control mode is with embodiment one.

In the present embodiment, the second temperature value and the 3rd temperature value is set as the case may be; Wherein, the second temperature value is 130 DEG C ~ 140 DEG C; 3rd temperature value is 115 DEG C ~ 125 DEG C.

Embodiment three

In conjunction with the embodiments one and embodiment two, described control device for electric pressure cooker also comprises: temperature control timer and pressurize timer; Control panel, after receiving the first signal, starts temperature control timer; Control panel, after temperature control timer zero, starts pressurize timer, and control panel, after pressurize timer zero, controls relay switch and disconnects.

Namely, after control panel receives the first signal, the temperature control stage is entered.Start temperature control timer.Wherein, the timing duration of institute's temperature control timer is 2min ~ 10mim.

In the temperature control stage, the temperature in pot controls in assigned temperature value upper and lower according to the secondary signal of induction gauge tap transmission and the 3rd signal by control panel.Wherein, control panel often receives order three signals, controls relay switch and connects, and jug with heating disk once, just realizes in electric pressure cooking saucepan once seething with excitement.

Wherein, after control panel enters the temperature control stage, after namely receiving the first signal, control panel receives secondary signal and the 3rd signal just plays a role.As in embodiment two, the 3rd temperature value, lower than the second temperature value, after namely entering the temperature control stage, first stops heating lowering the temperature, to be controlled by kettle temperature at the 3rd temperature value upper and lower.

After the temperature control stage terminates, namely after temperature control timer zero, start pressurize timer simultaneously, enter packing stage.Wherein, the timing duration of institute's pressurize timer is 6min ~ 20mim.

At packing stage, control panel is upper and lower in specified pressure value by the Stress control in pot according to the secondary signal and the 3rd signal of responding to gauge tap transmission.Until pressurize timer zero.

After pressurize timer zero, control panel controls relay switch and disconnects, and the process of cooking terminates.

Embodiment four

The present embodiment except following characteristics with embodiment three.

Fig. 3 is the detailed circuit schematic diagram of a kind of control device for electric pressure cooker in the present invention; described induction gauge tap sends four signal higher than during protection temperature value to control panel at Voltage force kettle temperature; control panel, when receiving the 4th signal, controls relay switch and disconnects.Wherein, arrange protection temperature value as the case may be, described protection temperature value is 160 DEG C ~ 180 DEG C.

Wherein, when the temperature bottom temperature sensor senses to electric pressure cooking saucepan is higher than protection temperature value, the 4th signal is sent to control panel.

In specific operation process, there will be the situation (dry combustion method) that in empty pot or pot, poach is dry, in order to better protect described control device for electric pressure cooker, protection temperature value is set.When dry combustion method, the temperature in pot can continue to rise, and when rising to the protection temperature value of setting, temperature sensor sends the 4th signal to control panel, and control panel controls electric hot tray and stops heating after receiving the 4th signal.

Described in Fig. 3, described temperature sensor is the thermistor T1 be arranged on the P2 slot of control panel M, and described thermistor T1 is specifically arranged on the bottom of a pan of electric pressure cooking saucepan.When the moisture in pot soon dryouies, the temperature in the bottom of a pan can raise, when the working temperature of temperature higher than thermistor T1, and thermistor T1 conducting, and send the 4th signal to control panel M.Control panel M is when receiving the 4th signal, and control relay switch and disconnect, heat-generating disc R0 stops heating; When temperature is lower than working temperature, thermistor can also can not be burned by protection circuit.The operating temperature value of wherein said thermistor is the protection temperature value of setting, is specially 160 DEG C ~ 180 DEG C.

Embodiment five

The present embodiment with embodiment four, is specially except following characteristics, and control device for electric pressure cooker also comprises: hummer; Wherein, controller, when receiving the 4th signal, controls hummer work.

Described hummer does not draw in the mimic channel figure shown in Fig. 3, and details are shown in corresponding digital circuit figure.Fig. 4 is the circuit theory diagrams of a kind of hummer in the present invention, and as described in Figure 4, described buzzer circuit comprises hummer and triode.Its principle of work is, according to the buzzerphone (buzzer) that input end B gives, hummer can sound the alarm, with this reminding user.

In addition, in specific implementation process, the arbitrary signal that described hummer can receive according to control panel sends prompt tone alarm, reminding user.Such as after powered up, after culinary art work completes, when there are abnormal conditions, user carries out when function is selected or in the processes such as display board operation, and control panel controls hummer and sends voice prompt.Wherein, according to the different situations that electric pressure cooking saucepan occurs, control panel controls hummer according to the unlike signal received and sends different prompt tone alarms.Namely, when abnormal conditions appear in reminding user electric pressure cooking saucepan, different audio warnings can be used to distinguish different abnormal conditions.

Embodiment six

The present embodiment except following characteristics with embodiment five.Be specially, shown in Figure 3, control panel is also provided with N1 interface; Digital circuit power source is provided with between N1 interface and L2 interface.Due to relay switch circuit, hummer, control panel M, need to use direct current to carry out power supply could work, if use external dc power carries out powering in addition not only affect the composition structure of whole electric pressure cooking saucepan, affect attractive in appearance, and use external power source also can affect the normal work of electric pressure cooking saucepan.Therefore N1 interface and L2 interface directly arrange one alternating current are converted to galvanic digital circuit power source on control panel.After being powered up, the digital circuit power source work arranged between N1 interface and L2 interface.Fig. 5 is the circuit theory diagrams of a kind of digital circuit power source in the present invention, and as shown in Figure 5, after N1 interface is connected, digital circuit power source work, provides power supply to input to control panel, relay switch circuit, hummer etc.

Embodiment seven

The present embodiment except following characteristics with embodiment six.Be specially, described control device for electric pressure cooker also comprises: thermal fuse-link.Shown in Figure 3, be provided with the first thermal fuse-link FU1 and the second thermal fuse-link FU2 in this embodiment.Wherein, one end of the second thermal fuse-link FU2 is connected with one end of power supply, and the other end of the second thermal fuse-link FU2 is connected with L2 interface.

One end of first thermal fuse-link FU1 is connected with the other end of power supply, and the other end of the first thermal fuse-link FU1 is connected with N1 interface; Wherein, the first thermal fuse-link FU1 connects with heat-generating disc R0.Namely N1 interface is connected between the first thermal fuse-link FU1 and heat-generating disc R0.

In other embodiments, the first thermal fuse-link FU1 only can be set, or the second thermal fuse-link FU2 is only set; Or body that many strip hot melts are broken series connection or rear place in circuit in parallel.

Embodiment eight

The present embodiment with embodiment seven, is specially except following characteristics, and described control device for electric pressure cooker also comprises: display board.As shown in Figure 3, display board S1 is connected on the P3 interface of control panel M, and is provided with microswitch K3 on P4 interface.Fig. 6 is the structural representation of a kind of display board in the present invention, shown in Figure 6, this display board S1 comprises multiple input stitch, and wherein, each stitch is connected with sensor, the signal output part of responding to gauge tap, microswitch, hummer or relay switch respectively; Wherein, respond to gauge tap and comprise temperature sensor and pressure switch.

Wherein, a stitch as an input end, respectively with the output terminal conllinear of thermistor T1, pressure switch K1, microswitch K3, pressure limiting valve K2, hummer or relay switch.As shown in Figure 6, the 1st stitch connects thermistor (NTC), the 2nd stitch connects microswitch (Door), the 3rd stitch connects pressure switch (Pressure), the 4th stitch connects hummer (Buzzer), the 5th stitch connects relay switch (relay).

Illustrating below by specific embodiment uses device provided by the invention to carry out the process that micro-boiling cooks.

Fig. 7 is the workflow diagram of a kind of control device for electric pressure cooker in the present invention; Shown in composition graphs 3 and Fig. 7,

Step 701, under selecting micro-boiling mode.

Step 702, waits for 30 seconds.After wait 30 seconds, after connecting the relay switch between L1 interface and L2 interface, heat-generating disc is started working.

Step 703, soaks 5 minutes.Be preheating in immersion, ensure that temperature is between 60 DEG C ~ 80 DEG C.

Step 704, continues heating.Pressure in pot slowly raises.

Step 705, induction gauge tap judges pot inner pressure.If pot inner pressure higher than the first force value, then carry out step 707, if current pot inner pressure does not reach the first force value, then carry out step 706.

Step 706, induction gauge tap judges kettle temperature.If kettle temperature higher than the second temperature value, then carry out step 708, if kettle temperature is lower than the second temperature value, then carry out step 704.

Step 707, enters the temperature control stage, starts temperature control timer.In step 707, when the pressure in pot reaches the first force value, i.e. 40kpa, pressure switch is jumped disconnected, and sends the first signal to control panel.Control panel controls relay switch according to the first signal received to be continued to connect, and namely continues heating, the pressure in pot is constantly raised.When the temperature in electric pressure cooking saucepan reaches the first temperature value, namely 150 DEG C, to control panel send secondary signal, simultaneously, the pressure in electric pressure cooking saucepan reach pressure limiting valve threshold values, pressure limiting valve start exhaust.Meanwhile, control panel controls relay switch disconnection according to the secondary signal received.After pressure limiting valve exhausting, pot inner pressure declines, and in pot, food comes to life.Owing to stopping heating, kettle temperature can slowly reduce, and when the temperature in pot is lower than the first temperature value, temperature sensor closes, and sends the 3rd signal to controller, and controller, according to the 3rd signal received, controls relay switch and connects, namely continue heating.So repeatedly, until temperature control timer zero.

Step 708, enters the temperature control stage, starts temperature control timer.In step 708, when the temperature in pot reaches the second temperature value, namely 135 DEG C time, and send the first signal to control panel, control panel controls relay switch according to the first signal received to be continued to connect.When the temperature in electric pressure cooking saucepan reaches the 3rd temperature value, namely 120 DEG C, send secondary signal to control panel, simultaneously, the pressure in electric pressure cooking saucepan reaches the threshold values of pressure limiting valve, and pressure limiting valve starts exhaust.Control panel controls relay switch according to the secondary signal received and disconnects.After pressure limiting valve exhausting, pot inner pressure declines, and in pot, food comes to life.When the temperature in pot is lower than the 3rd temperature value, temperature sensor closes, and sends the 3rd signal to controller, and controller, according to the 3rd signal received, controls relay switch and connects, namely continue heating.So repeatedly, until temperature control timer zero.

Step 709, enters packing stage, starts pressurize timer.In step 709, the timing duration of set pressurize timer is 8min ~ 12mim.At packing stage, control panel is upper and lower in specified pressure value by the Stress control in pot according to the secondary signal and the 3rd signal of responding to gauge tap transmission.Until pressurize timer zero.

Step 710, pressurize timer makes zero, and work completes.

In step 701 ~ step 709, hummer controls to send indicative alarm according to control panel.Control device for electric pressure cooker provided by the invention guarantees the intermittence boiling of cooking process full stage.Namely above-mentioned boiling is once seethed with excitement before entering pressurize, except except once seething with excitement before pressurize, in pressure maintaining period, often heats and once just realizes boiling once.Cooking the rice taken like this can not burnt hair, and mouthfeel is more fragrant strongly fragrant.

In sum, a kind of control device for electric pressure cooker provided by the invention, this control device for electric pressure cooker, by the connection of control panel according to the relay switch between the first signal control L1 branch road received and L2 branch road; After receiving the first signal, control relay switch disconnect according to the secondary signal received, control relay switch connect according to the 3rd signal received, so repeatedly, until temperature control timer operation zero, cooking process terminates.Control device for electric pressure cooker provided by the invention, uses less components and parts just can realize the cooking function of micro-boiling.Make in the intermittent micro-boiling of cooking process full stage; Cook the rice taken more even, can not burnt hair, improve the mouthfeel of rice; And on being used in and cooking, can also be used in needs boiling but on not susceptible to plugging cooking function, other functions such as such as decoct Chinese medicine by boiling and simmering.

The foregoing is only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., be all included in protection scope of the present invention.

Claims (10)

1. a control device for electric pressure cooker, is characterized in that, described control device for electric pressure cooker comprises: heat-generating disc, control panel and induction gauge tap; Wherein,
Described control panel is provided with L1 interface and L2 interface;
L2 interface connects with one end of power supply; L1 interface connects with one end of heat-generating disc, and the other end of heat-generating disc connects with the other end of power supply;
Relay switch is provided with between L1 interface and L2 interface;
The pressure of induction gauge tap in electric pressure cooking saucepan sends the first signal higher than during the first force value to control panel, and control panel, when receiving the first signal, controls relay switch and connects;
Induction gauge tap is after transmission first signal, and the temperature in electric pressure cooking saucepan sends secondary signal higher than during the first temperature value to control panel, and the temperature of induction gauge tap in electric pressure cooking saucepan sends the 3rd signal lower than during the first temperature value to control panel;
Control panel, when receiving secondary signal, controls relay switch and disconnects;
Control panel, when receiving the 3rd signal, controls relay switch and connects.
2. device according to claim 1, is characterized in that,
The temperature of induction gauge tap further in electric pressure cooking saucepan sends the first signal higher than during the second temperature value to control panel,
The temperature of induction gauge tap further in electric pressure cooking saucepan sends secondary signal higher than during the 3rd temperature value to control panel,
The temperature of induction gauge tap further in electric pressure cooking saucepan sends the 3rd signal lower than during the 3rd temperature value to control panel.
3., according to the control device for electric pressure cooker in claim 1 ~ 2 described in any one, it is characterized in that,
Described control device for electric pressure cooker also comprises: temperature control timer and pressurize timer;
Control panel, after receiving the first signal, starts temperature control timer;
Control panel, after temperature control timer zero, starts pressurize timer,
Control panel is after pressurize timer zero, and control relay switch and disconnect, electric pressure cooking saucepan enters keeping warm mode.
4. control device for electric pressure cooker according to claim 3, is characterized in that,
Described induction gauge tap sends four signal higher than during protection temperature value to control panel at Voltage force kettle temperature,
Control panel, when receiving the 4th signal, controls relay switch and disconnects.
5. control device for electric pressure cooker according to claim 4, is characterized in that,
Described control device for electric pressure cooker also comprises: hummer;
Wherein, control panel, when receiving the 4th signal, controls hummer work.
6. control device for electric pressure cooker according to claim 3, is characterized in that, described control device for electric pressure cooker also comprises: thermal fuse-link;
One end of described thermal fuse-link is connected with one end of power supply, and the other end of thermal fuse-link is connected with L2 interface;
Or,
One end of described thermal fuse-link is connected with the other end of power supply, and the other end of thermal fuse-link is connected with one end of heat-generating disc, and the other end of heat-generating disc is connected with L1 interface.
7., according to the said control device for electric pressure cooker of claim 6, it is characterized in that
Described induction gauge tap comprises pressure switch and temperature sensor; Wherein, temperature sensor is thermistor or thermal switch, and pressure switch is inching switch, bimetallic strip flashing switch or Temperature Control Type switch.
8. control device for electric pressure cooker according to claim 7, is characterized in that,
Described first force value is 40kpa ~ 60kpa, and described first temperature value is 145 DEG C ~ 155 DEG C, and the second temperature value is 130 DEG C ~ 140 DEG C, and the 3rd temperature value is 115 DEG C ~ 125 DEG C.
9. control device for electric pressure cooker according to claim 3, is characterized in that,
The timing duration of described temperature control timer is 2min ~ 10min;
The timing duration of described pressurize timer is 6min ~ 20min.
10. control device for electric pressure cooker according to claim 9, is characterized in that, described control device for electric pressure cooker also comprises: display board;
Described display board comprises multiple input stitch, and wherein, described stitch is connected with the signal output part of pressure switch, temperature sensor, microswitch, hummer or relay switch respectively.
CN201210353177.0A 2012-09-19 2012-09-19 Device for controlling electric pressure cooker CN102880070B (en)

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