CN2537319Y

CN2537319Y - Self control electric heating milk cup

Info

Publication number: CN2537319Y
Application number: CN 01225636
Authority: CN
Inventors: 夏景育
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-05-22
Filing date: 2001-05-22
Publication date: 2003-02-26
Anticipated expiration: 2011-05-22

Abstract

The utility model relates to a self-control electric heating milk cup, belonging to the technical field of household electrical appliances; wherein, by means of common photoelectrical detection, the self-control electric heating milk cup performs logic comparison, and then the power supply of the electric cup is controlled by a thyristor, or the intelligent control is conducted by an ST62T01CB6 single-chip microcomputer. The utility model has the advantages of infrequent spillover, no need for personal monitoring, automatic control and prompt, convenient use, less electricity consumption and low cost.

Description

The self-controlling electrothermal milk cup

The utility model belongs to household appliance technical field, relates in particular to a kind of self-controlling electrothermal milk cup.

At present, people still generally adopt aluminium milk pot to burn milk on gas range, and perhaps available electric cup burns milk, though micro-wave oven also can burn milk, above-mentioned three kinds of methods all can't solve milk excessive problem when boiled, so must need the people to keep an eye on, unless you give your whole attention to it, milk will overflow.

The purpose of this utility model is at above-mentioned the deficiencies in the prior art, and or else a kind of milk liquid level of controlling automatically of design can overflow when using milk boiled, can send simultaneously " too " the prompting field, thoroughly solved long-term puzzlement people's a difficult problem, brought great convenience to people.

The purpose of this utility model can solve by two kinds of schemes:

Scheme 1 is by general Photoelectric Detection, carries out logic then relatively, controls the power supply of electric cup again by controllable silicon; Scheme 2 is to carry out Based Intelligent Control by the ST62T01CB6 single-chip microcomputer.

Embodiment 1: superbright luminous tube LED3 (18) left side is housed on the right side of the transparent cup (2) of this glass photo resistance R4 (3) is housed, in the base (7) of cup automatically controlled plate (10) is housed.When milk was not boiled, photo resistance R4 (3) presented low-resistance value under the shining of superbright luminous tube (18), when milk is boiled, the milk liquid level rises, and blocks superbright luminous tube (18), photo resistance R4 (3), make photo resistance R4 (3) present high resistance, at this moment automatically controlled plate (10) cuts off the electric cup power supply by controllable silicon, because electric cup is to adopt the Electric radiant Heating Film heating, waste heat is very little, the milk liquid level can not continue to rise, and has so just guaranteed that milk does not overflow.

The utility model is compared with prior art, has to burn milk and do not need the people to stare to keep an eye on, and control automatically, prompting, milk is difficult for overflowing, and is easy to use, the power saving low cost and other advantages.

Description of drawings:

Fig. 1 is the cup forward cutaway view of present embodiment 1.

Fig. 2 is the circuit theory diagrams of present embodiment 1.

Fig. 3 is present embodiment 2 structural representations

Fig. 4 is the single chip machine controlling circuit figure of embodiment 2.

Embodiment 1 pair the utility model given below in conjunction with accompanying drawing describes in further detail: this cup structure is equipped with annular iron ring (22) on the top of transparent cup (2) as shown in Figure 1, screw (21), handle (20).In the left side of transparent cup (2) left case (4) is housed, in the inside of left case (4) photo resistance R4 (3) is housed, left case (4) is fixed on the base (7) by screw (6).On the right side of transparent cup (2) right case (19) is housed, superbright luminous tube LED3 (18) and dual-colored LED (16) are housed in the inside of right case (19), on the right side of base (7) power-line terminal (13) is housed, automatically controlled plate (10) is fixed on the power-line terminal (13) by copper sheet (11).Scribble Electric radiant Heating Film (15) in the bottom of transparent cup (2), by left electric wire (8), receive automatically controlled plate (10) on respectively by right electric wire (14) for Electric radiant Heating Film (15).Automatically controlled plate (10) is to utilize photovoltaic principals to control controllable silicon to control power supply and open or disconnect, electronic component (9), photo resistance R4 (3), superbright luminous tube LED3 (18), dual-colored LED (16) are housed on the automatically controlled plate (10), by left signal line (5), right signal line (17) is received on the automatically controlled plate (10) respectively.Work electric principle as shown in Figure 2: alternating current is through C6, R1 step-down, the VD1-VD2 rectification, and the VD5 voltage stabilizing obtains the dc source of quite stable after the C1 filtering.Resistance R 2 is connected with photo resistance R4 (18) after the dividing potential drop, and as the defeated people's voltage of 3 pin of IC1a, resistance R 3 is connected with W1 after the dividing potential drop as 2 pin of IC1a and the 5 pin reference voltages of IC1b.When milk is not boiled, the milk liquid level is lower than the position of photo resistance R4 (3) and superbright luminous tube LED3 (18) among Fig. 1, at this moment photo resistance R4 (3) is under the shining of superbright luminous tube LED3 (18), present low-resistance value, it is the 1 pin output low level (OV) of IC1a, this low level is through 6 pin of the defeated people of VD6 to IC1b, because the level of 6 pin is lower than the reference voltage of 5 pin, the 7 pin output high level of IC1b makes triode VT2 conducting, the VS2 two-way admittance in the optocoupler IC3, make bidirectional triode thyristor VS1 two-way admittance, it is electric that load resistance RL is got, and promptly the Electric radiant Heating Film among Fig. 1 (15) gets electrical heating milk, and LED2 sends ruddiness simultaneously.When milk was boiled, the milk liquid level rose and to have stopped that superbright luminous tube LED3 (18) to the shining of photo resistance R4 (3), rises the resistance value of photo resistance R4 (3) suddenly, and 5K Ω-7K Ω generally rises.At this moment the 3 pin voltages of IC1a also rise to greater than 2 pin reference voltages, make the 1 pin output high level of IC1a, and this high level charges to capacitor C 2 through VD6, triode VT1 cut-off state, when the voltage of C2 had just risen to 5 pin reference voltages greater than IC1b, 7 pin of IC1b are output low level immediately, and triode VT2 is ended, the VS2 of optocoupler IC3 turn-offs, bidirectional triode thyristor VS1 is turn-offed, load resistance RL dead electricity, promptly Electric radiant Heating Film (15) dead electricity stops heating, simultaneously, make luminous tube LED1 green light.Because 1 pin of IC1a output high level simultaneously, makes triode VT3 conducting, speech IC IC3 get electric sending " too " sound, when the original liquid level of milk build-up of fluid, " too " sound promptly stops.Electric radiant Heating Film (15) stops heating, and the milk liquid level drops to original liquid level very soon, and photo resistance R4 (3) recovers low resistance again, 1 pin of IC1a also returns to low level, but because the 6 pin input impedance of IC1b are very big, triode VT1 ends, the electric charge of C2 can't be discharged, the 6 pin voltages that will always keep IC1b for a long time end VT2 greater than 5 pin reference voltages always like this, at this moment if will heat again, only need deenergization, the demand working power supply, the LED1 green light goes out, and the LED2 red light is bright.Because C3 discharges immediately during outage.During energising, C3 charges immediately, and when C3 charging initial, the VT1 conducting discharges the electric charge of C2 immediately, and the voltage of C2 drops to and is lower than at 0.3 o'clock, and VT1 ends.When C2 charging next time, because the voltage of C3 equals dc source voltage, VT1 still ends again.

Embodiment 2:

The core component of this programme is the ST62T01C single-chip microcomputer, this single-chip microcomputer have 4 analog inputs 8 A/D converters (PB3, PB5-PB7), this machine the PA1-PA3 low level time can suck the 20mA electric current.The Cup structure of this programme is as shown in Figure 3: bowl cover (1), transparent cup (2), photo resistance R3-R6 (3), (4), (5), (6) are fixed on respectively on the right side wall of transparent cup (2) as shown in the figure, and superbright luminous tube LED3 is fixed on the top of the right side wall of transparent cup (2).Double color luminotron (16) is fixed on the cover (19), and electronic component (9) is contained on the automatically controlled plate (10), and automatically controlled plate (10) utilizes copper sheet (11) to be fixed on the binding post (13), and binding post (13) is fixed on the base (7).Transparent cup (2) also is fixed on the base (7), and the bottom of transparent cup (2) scribbles Electric radiant Heating Film (15), and Electric radiant Heating Film (15) is connected on the automatically controlled plate (10) by the right electric wire of left electric wire (8) (14) respectively.External power source is by binding post (13), and the defeated people of copper sheet (11) is to automatically controlled plate (10), and wherein Fig. 4 is the single chip machine controlling circuit figure of embodiment 2.Work as milk, soya-bean milk, coffee all are to utilize that liquid level rises when boiled, block photo resistance and make its resistance become big, and current potential rises, utilize program to judge after, the low level by the PA3 port is blocked optocoupler IC2 the VS bidirectional triode thyristor is turn-offed.Just can point out (or warning) by sounding by the square wave about PA2 port output 2KHz, when boiling water, the water is boiling, and this cup does not react, and has only after a water evaporation part, and to arriving, this cup just can cut off the power supply, and boils tea in like manner when this played liquid level decline or timer A.Can prevent from so also can not burn out cup when people from forgetting about.

Claims

1, a kind of self-controlling electrothermal milk cup, it is characterized in that this self-controlling electrothermal milk cup, it is equipped with superbright luminous tube LED3 (18) by the right side of transparent cup (2), photo resistance R4 (3) is equipped with in the left side, automatically controlled plate (10) is housed in cup base (7), on the top of transparent cup (2) annular iron ring (22) is housed, screw (21), handle (20), in the left side of transparent cup (2) left case (4) is housed, in the inside of left case (4) photo resistance R4 (3) is housed, left side case (4) is fixed on the base (7) by screw (6), right case (19) inner dress superbright LED 3 (18) and dual-colored LED (16) are housed on the right side of transparent cup (2), on the right side of base (7) power-line terminal (13) is housed, automatically controlled plate (10) is fixed on the power-line terminal (13) by copper sheet (11), scribbles Electric radiant Heating Film (15) in the bottom of transparent cup (2), by left electric wire (8), receive automatically controlled plate (10) on constitute respectively by right electric wire (14) for Electric radiant Heating Film (15).

2, a kind of self-controlling electrothermal milk cup as claimed in claim 1, it is characterized in that this self-controlling electrothermal milk cup also can be by bowl cover (1), transparent cup (2), photo resistance R3-R6 (3), (4), (5), (6), be fixed on the right side wall of transparent cup (2), superbright luminous tube LED3 is fixed on the top of the right side wall of transparent cup (2), double color luminotron (16) is fixed on the case (19), electronic component (9) is that the ST62T01C single-chip microcomputer is contained on the automatically controlled plate (10), automatically controlled plate (10) utilizes copper sheet (11) to be fixed on the binding post (13), binding post (13) is fixed on the base (7), transparent cup (2) also is fixed on the base (7), the bottom of transparent cup (2) scribbles Electric radiant Heating Film (15), by left electric wire (18), right electric wire (14) is connected on the automatically controlled plate (10) and constitutes Electric radiant Heating Film (15) respectively.