CN86205585U - Automatic control device of rice cooker - Google Patents

Abstract

The utility model discloses an automatic control device of a rice cooker, which has the functions of timing, delaying and constant temperature controlling. The automatic control device of the rice cooker is formed into an integrative body with a rice bubble probe, a boiling probe and a heat preservation probe; the rice bubble probe is make of two copper bars or other conductors; the boiling probe and the heat preservation probe are made of the thermistor. When the automatic control device of the rice cooker is inserted into a hole at the edge of the cooker lid of the rice cooker, the signals adopted by the automatic control device of the rice cooker is fed back to a controlling device, so that the controlling apparatus proceed with the program control to rice cooking. The utility model does not make the rice liquid overflow the cooker; moreover, the time for rice cooking can be controlled. The panel is provided with three functional buttons which cause the control device to realize the switch among the functions of instant power supplying, power off delaying and constant temperature controlling.

Description

Automatic control device of rice cooker

The present invention relates to a kind of control device of cooking automatically, it also can be used as independently timer or delayer or radiator valve use.It is used to control the timing automatic cooked cooked rice of electric furnace (perhaps electric cooker), gruel or boils water, and meal liquid can not overflow when cooking.

The utensil of cooking now generally is an aluminum pot, and in the process of cooking, people always worry that meal liquid overflows from pot, so often pot cover is opened, perhaps avoid meal liquid excessive with low baking temperature, and gruel and the cooked rice of making has like this lost the peculiar flavour that it had.

In order to address this problem, normally control temperature at container bottom device temperature-sensitive automatic switch, for example patent No. 55502 propositions in Taiwan add one pair of heating on the universal electric pot, a temperature-sensing control element and a timer, and generation has multi-functional electronic pot.Have plenty of according to cook process temperature and time situation of change, set automaton, for example the clear 60-1007 of Japan Patent number proposition is provided with control module from the time of cooking and temperature relation curve and appetite change curve.But, since appetite what, electric power power, moisture content amount size change, general automatic control device of cooking is unfavorable, especially when cooking congee, meal liquid or meal bubble overflow to pot outside phenomenon fail solution so far.

Task of the present invention is that a kind of control device of cooking automatically will be provided, and it not only has regularly, the function of time-delay, insulation, and be not subjected to the rice amount what, the voltage height, what influence of the water yield, meal liquid or meal bubble can not overflow outside aluminum pot when enduring meal.

Task of the present invention is finished as follows, this control device of cooking automatically is by clock, relay, signal integrated processing circuit, delay circuit, temperature signal output circuit, rice probe, the boiling probe, the insulation probe, alarm, trigger switch, indicator lamp, button is formed, and it is rice probe, and boiling probe and insulation probe are made the integral body of a mutually insulated, inserting pot cover keeps to the side in the hole of edge, wherein rice probe constitutes with two copper bars or other conductors, and with the parallel isolation sealing of insulating materials, the bubble one of only beging rises between rice probe two conductors that the probe place will make isolation and becomes electric pathway between them, cause that relay disconnects action, the electric furnace outage.After the meal bubble dropped to the disengaging rice probe, off state appearred again in two conductors of probe, and relay is adhesive again, and electric furnace is switched on again, and the meal bubble is not overflow outside pot.The boiling probe is made with positive temperature coefficient switching mode thermistor, and it also is to be inserted in the hole at pot cover edge, and its resistance raises with temperature and increases.When meal in the pot or water boiling.It can carry a triggering signal to the delay circuit that RC forms, with the starting point of boiling initial time as time-delay.The process of cooking enters endures the meal stage because the time-delay of delay circuit is adjustable, can according to actual conditions such as appetite what, rare dried degree is cooked or is boiled water and waits to determine delay time.When the time-delay end, delay circuit starts alarm, and delay circuit can send enabling signal to the temperature signal output circuit, and this control device becomes radiator valve, and the process of cooking enters the later stage holding stage, and the insulation probe is started working.The insulation probe is installed in the hole of pot cover with rice probe boiling probe, and it is to make with the thermistor of negative temperature coefficient, and after time-delay finished, kettle temperature was still very high, and relay disconnects, the electric furnace outage.When temperature descended, the resistance of insulation probe became greatly on the contrary, and resistance increases to certain value, and when promptly the pot for cooking rice temperature was lower than the holding temperature of setting, relay adhesive and make the electric furnace heating of powering again once more was so just to pot for cooking rice generation insulation effect.In addition, three working station indicators are set on the panel of the control device of cooking automatically, represent the three phases of the process of cooking respectively: regularly cook the stage boiling---time-delay (promptly enduring meal) stage and holding stage.Also be equipped with three work functions buttons, realizing the instant power supply of this control device, or separately as the switching of delayer, radiator valve.

Below with reference to accompanying drawing invention is further described.

Fig. 1 cooks and lays the rice probe of the control device of cooking automatically in the pot cover hole, the cutaway view of boiling probe and insulation probe.

Fig. 2 rice probe, boiling probe and insulation probe insulating materials sealing cutaway view in aggregates.

Cook the automatically panel schematic diagram of control device of Fig. 3

Cook the automatically basic circuit diagram of control device of Fig. 4.

Perforate a hole (2) in the edge of the pot cover (1) of aluminum pot or electric cooker with reference to Fig. 1, in the hole, insert the integral body of rice probe (3), boiling probe (4) and the insulation probe (5) of the control device of cooking automatically.Rice probe (3) is made up of two copper bars or other conductors, uses the parallel isolation sealing of insulating materials between them.Boiling probe (4) is to make with positive temperature coefficient switching mode thermistor, and insulation probe (5) is made with negative tempperature coefficient thermistor, and Fig. 2 more specifically describes the arrangement position of three kinds of probes.In Fig. 4, when alarm clock (6) has arrived predetermined instant, the timing mechanism of alarm clock (6) makes closed clock controlled switch (8), thereby has started rectifying voltage regulator device (7).At this moment all end transistor (91) and (92) in the signal integrated processing circuit (9), so transistor (93) is saturated, and relay (10) adhesive, socket (11) send electricity to give electric furnace, begin to cook, realize cooking automatically, heat up water or the timing controlled of other electricity consumptions.

When the meal in the pot or water come to life, it is big that the resistance of boiling probe (4) sharply becomes, and originally saturated transistor (12) becomes and ends, so send to an enabling nulse to circuits for triggering (13), start working by the delay circuit (14) that RC forms, cook automatically to have entered and endure the meal stage.The length of time-delay is promptly endured the length of meal time, and it can be regulated by the knob on the panel (15).At this moment, signal integrated processing circuit (9) does not have the change state.Along with the continuity of enduring the meal time, meal liquid progressively thickens in the pot, and forms the meal bubble, and it at first rises along the interior edge of pot.When meal bubble rose to certain altitude and runs into rice probe (3), the meal bubble made between two copper bars and becomes electric pathway, and this just makes transistor (93) end, and carries out relay (10) and discharges, and electric furnace has a power failure.If the meal bubble also can continue to rise because electric furnace has surplus heat, but it can't make the meal hydrorrhea outside pot, because rice probe (3) is to insert in the pot, apart from pot cover (1) certain distance is arranged.When the meal bubble descended heavily again and breaks away from probe (3), electric furnace was switched on again, and this meal process of enduring lasts till that always delay circuit (14) finishes till the time-delay.

Just opened the switch that circuits for triggering (16) constitute when delay circuit (14) finishes time-delay, alarm (17) just sends signal and informs that meal boils.Start working with the temperature signal output circuit (18) that insulation probe (5) constitutes, the temperature signal that insulation probe (5) is obtained is sent into signal integrated processing circuit (9).To finish moment in time-delay much higher more than the temperature of required insulation in view of kettle temperature, and at this moment the resistance of insulation probe (5) is enough little, causes transistor (91), (92) saturated, and transistor (93) ends, and relay (10) discharges, and electric furnace has a power failure.Have only when kettle temperature drops to the holding temperature that is lower than setting, the resistance of insulation probe (5) increases, and makes transistor (91), (92) end again, and transistor (93) is saturated, relay (10) adhesive, the electric furnace heating of switching on again.Above process constantly repeats, and the process of cooking enters last holding stage.

With reference to Fig. 3, the control device of cooking automatically also is equipped with the indicator lamp of three duties on panel, and when clock controlled switch (8) was closed, indicator lamp (19) can be shinny, and expression electrical equipment begins to cook.When cooking or boil water when boiling, the delay circuit trigger is cooked to enter and is endured the meal stage, and indicator lamp (20) is shinny and indicator lamp (19) extinguishes.Time-delay finishes, and indicator lamp (20) extinguishes and indicator lamp (21) is shinny, cooks to enter holding stage.Also can see from Fig. 3, on panel, be equipped with three work functions buttons (22) (23) (24).According to user's actual needs, carry out instant switching controls when touching touch the button (22), control device just send immediately; Touching (23) this control device that touches the button again just becomes to touch by the delay cut-off controller that is time zero; If touch touch the button (24), this control device becomes radiator valve again, thereby realizes the function of a tractor serves several purposes.

The process of cooking automatically of realizing is performed such, the aluminum pot of putting rice and water well is placed on the electric furnace, cover the pot cover that has three kinds of probes, the power supply of electric furnace is inserted on the socket (11) of the control device of cooking automatically, pull out the fixed time that begins to cook, meal time and holding temperature are endured in setting, realize by the knob on the control set for adjusting panel (15) and (25).When predetermined instant has arrived, clock controlled switch (8) closure, relay (10) adhesive begins to cook.Boiling probe (4) carries signal to give delay circuit (14).Boiling begins to be the time-delay starting point, cooks to enter and endures the meal stage, utilizes rice probe (3) that full bubble is overflow outside pot, and time-delay finishes the back and also has heat insulation function.In a word, this control device of cooking automatically is characterized in, connects power supply on schedule, realize regularly cooking, boil boiling, always length during this period of time, control device is unqualified, and it can adapt to different appetite randomly, the different water yields, different voltage, different temperature.This control device of cooking automatically is that only the length of meal time is endured in control with the starting point of boiling initial time as delay circuit (14), and this has just improved the reliable of the control of cooking.The length of enduring the meal time can preestablish, just make boil dry rare, but endure all regulated at will of mashed degree.And during enduring meal, it is excessive to control meal liquid.That is to say that this control device of cooking automatically can be used for different line voltages, the electric furnace of different capacity, guaranteeing to use the big firepower of trying one's best to endure meal under the not excessive prerequisite of meal liquid, the stirring of fully seething with excitement when meal is endured in assurance makes the meal of enduring out delicious, simultaneously can also using electricity wisely.

Claims (5)

1, one by clock (6), relay (10), signal integrated processing circuit (9), delay circuit (14), temperature signal output circuit (18), alarm (17), trigger switch (13), (16) indicator lamp (19) (20), button (22), (23), (24), the control device of forming of cooking automatically, it is characterized in that making an integral body, and to be inserted in rice probe (3) in pot cover (1) edge hole (2) be with two copper bars or other conductors formation, use the parallel isolation sealing of insulating materials each other with boiling probe (4), insulation probe (5).The meal bubble rises when arriving rice probe (3), forms electric pathway between two conductors.

2, according to the control device of cooking automatically of claim 1 defined, the resistance that it is characterized in that the boiling probe (4) that positive temperature coefficient switching mode thermistor is made increases with the temperature rising, when boiling, it is big that its resistance sharply becomes, and circuit produces the delay circuit (14) of a pulse enable signal RC composition and starts working.

3, its resistance with insulation probe (5) of the thermistor composition of negative temperature coefficient of its feature of control device of cooking automatically according to claim 1 regulation increases with temperature decline, when temperature was lower than the setting holding temperature, its resistance increased to and makes relay (10) adhesive again.

4, the control device of stipulating according to claim 2 of cooking automatically, the delay value that it is characterized in that the delay circuit (14) that RC forms is adjustable, carry out adjustable control to enduring the meal time, after time-delay finished, delay circuit (14) can be given (18) triggering signals of temperature signal output circuit.

5, according to the control device of cooking automatically of claim 1 regulation, it is characterized in that being equipped with on the panel three buttons (22), (23), (24), can finish this control device and become instant electricity consumption, delay cut-off controller, the switching of radiator valve.

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