CN201582997U - Liquid heating device - Google Patents
Liquid heating device Download PDFInfo
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- CN201582997U CN201582997U CN200920273495XU CN200920273495U CN201582997U CN 201582997 U CN201582997 U CN 201582997U CN 200920273495X U CN200920273495X U CN 200920273495XU CN 200920273495 U CN200920273495 U CN 200920273495U CN 201582997 U CN201582997 U CN 201582997U
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Abstract
The utility model relates to a liquid heating device comprising a power supply circuit and a heating body. The liquid heating device is characterized by also comprising a control executing circuit, a temperature detection and correction circuit and a microcomputer processor, wherein the microcomputer processor comprises a boiling point recognizer which is arranged in the microcomputer processor; the signal input end of the boiling point recognizer is electrically connected with the signal output end of the temperature detection and correction circuit; the signal output end of the boiling point recognizer is electrically connected with the signal input end of the control executing circuit; the control executing circuit is electrically connected between the power supply circuit and the heating body; one connecting end of the control executing circuit is electrically connected with one output end of the power supply circuit; and the other connecting end of the control executing circuit is electrically connected with one end of the heating body. When recognizing a boiling point, the boiling point recognizer can output a control signal to the control executing circuit, and the control executing circuit can lead the heating body and the power supply circuit to be cut off so as to stop heating. Therefore, the liquid heating device can carry out automatic heating on liquid under different atmospheric pressure.
Description
Technical field
The utility model relates to a kind of parts of liquid heater, more particularly, relates to the liquid heating in a kind of liquid heater.
Background technology
In the liquid heating of liquid heaters such as existing electric kettle, electric hot water bottle, electric heater, the general heating of adopting mechanical temperature controller to control liquid, for example, adopt memorial alloy, utilize memorial alloy the memory characteristic of temperature to be controlled the heating of liquid as temperature control element; And for example, adopt bimetal leaf, utilize the deformation behavior of bimetal leaf to control the heating of liquid as temperature control element.
When liquid was heated to the predefined boiling point of liquid heating, mechanical temperature controller just can make heater and power circuit disconnect, thereby makes heater stop liquid being heated.
Yet the boiling point of liquid is relevant with the atmospheric pressure of surrounding environment, and under different atmospheric pressure, the boiling point of liquid is inequality.
When the residing height above sea level of liquid heater manufacturer during far below the residing height above sea level of liquid heater user, the boiling point that its liquid heating of liquid heater is set just can be higher than the boiling point of liquid in user's environment of living in, and the boiling point that existing its liquid heating of liquid heater is set is changeless, liquid heating can not be discerned boiling point automatically under different atmospheric pressure, therefore, when liquid boiling, liquid heater just can not stop heating automatically, thereby causes existing liquid heater normally to use.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of liquid heating, this liquid heating can be discerned boiling point automatically according to the atmospheric pressure of surrounding environment, and according to the boiling point that recognizes automatically stop automatically the heating, thereby liquid heating of the present utility model can be heated liquid under different atmospheric pressure automatically.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is as follows:
A kind of liquid heating, comprise power circuit and heater, it is characterized in that: this liquid heating also comprises control executive circuit, temperature detection and correcting circuit and micro processor, above-mentioned micro processor comprises the boiling point identifier that can discern boiling point according to the atmospheric pressure of surrounding environment automatically, above-mentioned boiling point identifier is located in the micro processor, the signal input part of boiling point identifier is electrically connected with the signal output part of temperature detection and correcting circuit, and the signal output part of boiling point identifier is electrically connected with the signal input part of control executive circuit; Above-mentioned control executive circuit is connected electrically between power circuit and the heater, and a link of control executive circuit is electrically connected with an output of power circuit, and another link of control executive circuit is electrically connected with an end of heater.
Above-mentioned boiling point identifier is made of micro computer process chip and related software, after the boiling point identifier identifies boiling point, the boiling point identifier is given the control executive circuit according to the control signal of boiling point output that identifies, the control executive circuit makes heater and power circuit disconnection stopping heating according to this control signal, therefore, liquid heating of the present utility model can heat liquid under different atmospheric pressure automatically.
As a kind of optimal technical scheme of the present utility model, described boiling point identifier comprises average value calculator and mean value comparator, above-mentioned average value calculator signal input part is electrically connected with the signal output part of temperature detection and correcting circuit, the signal output part of average value calculator is electrically connected with the signal input part of mean value comparator, and the signal output part of mean value comparator is electrically connected with the signal input part of control executive circuit.
When average value calculator receives the measured temperature that temperature detection and correcting circuit transport, average value calculator with front and back several continuously (2,3 ..., or n) calculating of the measured temperature value of averaging, the mean value of the measured temperature of gained is transported to the mean value comparator and compares, when the mean value of measured temperature did not change, this measured temperature mean value just was regarded as boiling point; After identifying boiling point, signal of mean value comparator output is given the control executive circuit, and the control executive circuit disconnects heater and power circuit, and heater stops heating.Therefore, this liquid heating can be discerned boiling point automatically according to the atmospheric pressure of surrounding environment, and according to the boiling point that recognizes automatically stop automatically the heating, thereby liquid heating of the present utility model can be heated liquid under different atmospheric pressure automatically, thereby liquid heating of the present utility model can adapt to the more extensively liquid heating in area.
As another kind of optimal technical scheme of the present utility model, described boiling point identifier comprises the boiling point setting apparatus, the boiling point comparator, average value calculator and mean value comparator, a signal input part of above-mentioned boiling point comparator is electrically connected with the signal output part of boiling point setting apparatus, another signal input part of boiling point comparator is electrically connected with the signal output part of temperature detection and correcting circuit, the signal output part of boiling point comparator is electrically connected with the signal input part of average value calculator, the signal output part of average value calculator is electrically connected with the signal input part of mean value comparator, and the signal output part of mean value comparator is electrically connected with the signal input part of control drive circuit.
When the boiling point comparator receives the measured temperature that setting boiling point that the boiling point setting apparatus transports and temperature detection and correcting circuit transport, the boiling point comparator compares measured temperature with the setting boiling point: if measured temperature is identical with the setting boiling point, be the boiling point of liquid to set boiling point then; If measured temperature is inequality with the setting boiling point, then the boiling point comparator just can flow to the measured temperature that receives the calculating of the average value calculator value of averaging, the mean value of the measured temperature of gained is transported to the mean value comparator and compares, when the mean value calculation of measured temperature does not change, this measured temperature mean value calculation just is regarded as boiling point, signal of mean value comparator output is given the control executive circuit, the control executive circuit disconnects heater and power circuit, and heater stops heating.Therefore, this liquid heating around judging boiling point with set boiling point not simultaneously, can discern boiling point automatically according to the atmospheric pressure of surrounding environment, and according to the boiling point that recognizes automatically stop automatically the heating, thereby liquid heating of the present utility model can be heated liquid under different atmospheric pressure automatically, thereby liquid heating of the present utility model can adapt to the more extensively liquid heating in area.
As further improvement of the utility model, described liquid heating also comprises the boiling point memory, the power input of above-mentioned boiling point memory is electrically connected with the output of above-mentioned power circuit, and the boiling point memory is connected with the mean value comparator transmitted in both directions of micro processor.
By above-mentioned boiling point memory, this liquid heating can be stored in the boiling point of discerning automatically in the boiling point memory automatically, thereby has the dynamic boiling point function of memory, thereby has further improved this liquid heating practicality.
Described micro processor also comprises a zero clearing device, and above-mentioned zero clearing device is located in the micro processor, and the signal output part of zero clearing device is electrically connected with the signal input part of boiling point memory.
When the zero clearing device was worked, the zero clearing device sent a control signal and gives the boiling point memory, the boiling point of boiling point store memory storage was removed automatically, so that remember new boiling point again.
Described micro processor also comprises an anti-dry device, above-mentioned anti-dry device is located in the micro processor, the anti-dry device comprises temperature upper limit setting apparatus and temperature upper limit comparator, the signal output part of said temperature higher limit setting apparatus is electrically connected with a signal input part of temperature upper limit comparator, another signal input part of said temperature higher limit comparator is electrically connected with the signal output part of temperature detection and correcting circuit, and the signal output part of temperature upper limit comparator is electrically connected with the signal input part of control executive circuit.
When the temperature upper limit comparator receives the temperature upper limit that measured temperature that temperature detection and correcting circuit transport and temperature upper limit setting apparatus transport, the temperature upper limit comparator compares measured temperature and temperature upper limit, when measured temperature is equal to or greater than temperature upper limit, control signal of temperature upper limit comparator output is given the control drive circuit, the control drive circuit carries a signal to implement circuit for control, circuit is implemented in control disconnects heater and power circuit, heater stops heating, thereby has prevented the generation of dry combustion method phenomenon.
Described power circuit comprises AC power circuit and DC power supply circuit, and above-mentioned control executive circuit comprises control drive circuit and control enforcement circuit;
One road output of above-mentioned AC power circuit is electrically connected with heater, and wherein, an output is electrically connected with an end of heater, and another output is implemented circuit by control and is electrically connected with the other end of heater; Another road output of AC power circuit is electrically connected with the input of DC power supply circuit;
The output of above-mentioned DC power supply circuit is electrically connected with the power input of above-mentioned micro processor, temperature detection and correcting circuit, control drive circuit, control enforcement circuit respectively;
The signal input part of above-mentioned control drive circuit is electrically connected with a signal output part of micro processor; The signal output part of above-mentioned control drive circuit is electrically connected with the signal input part that circuit is implemented in control.
Described liquid heating also comprises voice and drive circuit thereof, the power input of above-mentioned voice and drive circuit thereof is electrically connected with the output of above-mentioned DC power supply circuit, and the signal input part of voice and drive circuit thereof is electrically connected with the signal output part of micro processor.
Described liquid heating also comprises button and condition indication circuit and temperature display circuit; The signal end of above-mentioned button and condition indication circuit is connected with the signal end transmitted in both directions of micro processor; The signal input part of said temperature display circuit is electrically connected with the signal output part of micro processor.
Described micro processor is micro computer process chip U1, be connected with peripheral circuit on the micro computer process chip U1, above-mentioned peripheral circuit comprises capacitor C 7, C8, C9, and an electrode of above-mentioned capacitor C 7 is electrically connected another electrode grounding of capacitor C 7 with the VDD pin of micro computer process chip U1; The electrode of capacitor C 8, C9 is electrically connected another electrode grounding of capacitor C 8, C9 with the supply pin VDD5 of micro computer process chip U1;
Said temperature detects and correcting circuit comprises temperature detection reference resistance R7, thermistor R8, temperature detection capacitor C 6 and anti-tampering diode D7, D8, above-mentioned thermistor R8 is probe, thermistor R8 contacts with liquid to be heated, temperature detection reference resistance R7 is connected with the 16th pin of micro computer process chip U1 with anti-tampering diode D8 serial connection back, thermistor R8 is connected with the 17th pin of micro computer process chip U1 with anti-tampering diode D7 serial connection back, another pin of R7 is electrically connected with temperature detection capacitor C 6 with another pin of R8 and after connecing, insert 12 pin of micro computer process chip U1 simultaneously, another pin ground connection of C6;
Above-mentioned control drive circuit comprises triode Q1 and resistance R 9, and resistance R 9 one terminations are gone into the 22nd pin of micro computer process chip U1, and a termination is gone into the base stage of triode Q1, the grounded emitter of triode Q1.The colelctor electrode of triode Q1 is electrically connected with the coil pin that the relay K 1 of circuit is implemented in control;
Above-mentioned control is implemented circuit and is comprised diode D7, relay K 1, Kick type temperature switch CB1, the coil of diode D7 and relay K 1 and connect after, a termination is gone into the colelctor electrode of triode Q1, the other end is received the rectification of dc source and is exported; The switch contact pin of relay K 1 is received the input of AC power circuit, and the normally opened contact pin of relay K 1 is connected in series AC power circuit is received in the back by heater H1 another input with Kick type temperature switch CB1;
Above-mentioned control is implemented circuit and is cut off being electrically connected of heater H1 and AC power circuit according to control signal, makes heater H1 stop to heat; Continue heating as something unexpected happened, after the detected temperature of temperature detection and correcting circuit is sent into micro processor, micro processor judges whether to arrive the temperature value upper limit of setting, reach and promptly cut off being electrically connected of heater H1 and AC power circuit behind the temperature upper limit, thereby reach the purpose of anti-dry;
Described boiling point memory comprises memory U2 and resistance R 4, R5, and resistance R 4, R5 are pull-up resistor, and the end of resistance R 4, R5 is received SDA and the SCL pin of memory U2 respectively, and the other end of resistance R 4, R5 is received the output pin of dc source; The SDA of memory U2 and SCL pin are electrically connected with the 7th pin and the 20th pin of micro computer process chip U1 respectively;
Described voice and drive circuit thereof comprise resistance R 6, speech chip U3, loudspeaker SP1, one of resistance R 6 terminates to the 14th pin of micro computer process chip U1, the other end of resistance R 6 is electrically connected with the 2nd pin of speech chip U3, and the 1st, 4 pin of speech chip U3 are electrically connected with the input of loudspeaker SP1;
Above-mentioned button and condition indication circuit comprise 8 resistance R 10～R17,4 touch-switch S1～S4,4 LED 1～LED4, wherein, resistance R 10 is connected in series the back and is electrically connected with the 3rd pin of micro computer process chip U1 with touch-switch S1, resistance R 11 is connected in series the back and is electrically connected with the 2nd pin of micro computer process chip U1 with touch-switch S2, resistance R 12 is connected in series the back and is electrically connected with the 1st pin of micro computer process chip U1 with touch-switch S3, resistance R 13 is connected in series the back and is electrically connected with the 23rd pin of micro computer process chip U1 with touch-switch S4; More than four road touch-switch the other end and connect the 11st pin common port that micro computer process chip U1 is inserted in the back, resistance R 14 is connected in series the back and is electrically connected with the 24th pin of micro computer process chip U1 with LED 1, resistance R 15 is connected in series the back and is electrically connected with the 13rd pin of micro computer process chip U1 with LED 2, resistance R 16 is connected in series the back and is electrically connected with the 15th pin of micro computer process chip U1 with LED 3, resistance R 17 is connected in series the back and is electrically connected with the 6th pin of micro computer process chip U1 with LED 4, more than four paths of LEDs the other end and connect the 11st pin common port of back access micro computer process chip U1;
The said temperature display circuit comprises 3 eight sections charactron DS1～DS3,7 resistance R 18～R24, one end of resistance R 18 is electrically connected with the 23rd pin of micro computer process chip U1, the other end is electrically connected with the 1st pin of charactron DS1～DS3, one end of resistance R 18 is electrically connected with the 23rd pin of micro computer process chip U1, the other end is electrically connected with the 1st pin of charactron DS1～DS3, one end of resistance R 19 is electrically connected with the 1st pin of micro computer process chip U1, the other end is electrically connected with the 2nd pin of charactron DS1～DS3, one end of resistance R 20 is electrically connected with the 2nd pin of micro computer process chip U1, the other end is electrically connected with the 3rd pin of charactron DS1～DS3, one end of resistance R 21 is electrically connected with the 3rd pin of micro computer process chip U1, the other end is electrically connected with the 4th pin of charactron DS1～DS3, one end of resistance R 22 is electrically connected with the 24th pin of micro computer process chip U1, the other end is electrically connected with the 5th pin of charactron DS1～DS3, one end of resistance R 23 is electrically connected with the 13rd pin of micro computer process chip U1, the other end is electrically connected with the 6th pin of charactron DS1～DS3, one end of resistance R 24 is electrically connected with the 15th pin of micro computer process chip U1, and the other end is electrically connected with the 7th pin of charactron DS1～DS3; The position of charactron DS1 selects pin to be electrically connected with the 8th pin of micro computer process chip U1, and the position of charactron DS2 selects pin to be electrically connected with the 9th pin of micro computer process chip U1, and the position of charactron DS3 selects pin to be electrically connected with the 10th pin of micro computer process chip U1.
The utility model beneficial effect against existing technologies is, because the micro processor of this liquid heating comprises the boiling point identifier that can discern boiling point according to the atmospheric pressure of surrounding environment automatically, above-mentioned boiling point identifier is located in the micro processor, the signal input part of boiling point identifier is electrically connected with the signal output part of temperature detection and correcting circuit, and the signal output part of boiling point identifier is electrically connected with the signal input part of control executive circuit; Above-mentioned control executive circuit is connected electrically between power circuit and the heater, and a link of control executive circuit is electrically connected with an output of power circuit, and another link of control executive circuit is electrically connected with an end of heater; So, after the boiling point identifier identifies boiling point, the boiling point identifier is given the control executive circuit according to the control signal of boiling point output that identifies, the control executive circuit makes heater and power circuit disconnection stopping heating according to this control signal, therefore, liquid heating of the present utility model can heat liquid under different atmospheric pressure automatically.
In addition, the plateau boiling point be remembered and be stored to this liquid heating can automatically, and simultaneously, this liquid heating can also be sent true man's voiced speech prompting of hommization more; When this liquid heating was used on the plateau, micro processor was judged the plateau boiling point automatically, and the sounding prompting, after treating to confirm manually, promptly was stored as new boiling point.After storing new boiling point, control operations such as heating, voice suggestion, outage according to the new boiling point of memory.
This liquid heating can be widely used in having vast market prospect in the liquid heating of electric kettle, electric hot water bottle, electric heater etc.
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model preferred embodiment;
Fig. 2 is the circuit diagram of the utility model preferred embodiment;
Fig. 3 is the flow chart of the utility model preferred embodiment when using at normal temperatures and pressures;
Fig. 4 is the flow chart of the utility model preferred embodiment memory plateau boiling point;
Fig. 5 is the flow chart that the utility model preferred embodiment anti-dry is judged.
The specific embodiment
As shown in Figure 1 and Figure 2, liquid heating in this preferred embodiment, comprise power circuit 78, control executive circuit 91, temperature detection and correcting circuit 1, micro processor 2, boiling point memory 3, voice and drive circuit 4 thereof, button and condition indication circuit 5, temperature display circuit 6 and heater H1, above-mentioned power circuit comprises AC power circuit 7 and DC power supply circuit 8, and above-mentioned control executive circuit comprises control drive circuit 9 and control enforcement circuit 10;
One road output of above-mentioned AC power circuit 7 is electrically connected with heater H1, and wherein, an output is electrically connected with an end of heating H1 body, and another output is implemented circuit 10 by control and is electrically connected with the other end of heater H1; Another road output of AC power circuit 7 is electrically connected with the input of DC power supply circuit 8;
The power input that the output of above-mentioned DC power supply circuit 8 detects with said temperature respectively and circuit 10 is implemented in correcting circuit 1, micro processor 2, boiling point memory 3, voice and drive circuit 4 thereof, control drive circuit 9, control is electrically connected; Being that DC power supply circuit 1 is respectively said temperature detection and correcting circuit 1, micro processor 2, boiling point memory 3, voice and drive circuit 4 thereof, control drive circuit 9, circuit 10 is implemented in control provides power supply;
Above-mentioned micro processor 2 comprises anti-dry device 30, zero clearing device 25 and the boiling point identifier 20 that can discern boiling point according to the atmospheric pressure of surrounding environment automatically, above-mentioned boiling point identifier 20, zero clearing device 25 and anti-dry device 30 all are located in the micro processor 2, above-mentioned boiling point identifier 20 comprises boiling point setting apparatus 21, boiling point comparator 22, average value calculator 23 and mean value comparator 24, above-mentioned anti-dry device 30 comprises temperature upper limit setting apparatus 26 and temperature upper limit comparator 27, a signal input part of above-mentioned boiling point comparator 22 is electrically connected with the signal output part of boiling point setting apparatus 21, another signal input part of boiling point comparator 22 is electrically connected with the signal output part of temperature detection and correcting circuit 1, the signal output part of boiling point comparator 22 is electrically connected with the signal input part of average value calculator 23, the signal output part of average value calculator 23 is electrically connected with the signal input part of mean value comparator 24, the signal output part of mean value comparator 24 is electrically connected with the signal input part of control drive circuit 9, and mean value comparator 24 is connected with boiling point memory 3 transmitted in both directions; The signal output part of above-mentioned zero clearing device 25 is electrically connected with the signal input part of boiling point memory 3; The signal output part of said temperature higher limit setting apparatus 26 is electrically connected with a signal input part of temperature upper limit comparator 27, another signal input part of said temperature higher limit comparator 27 is electrically connected with the signal output part of temperature detection and correcting circuit 1, and the signal output part of temperature upper limit comparator 27 is electrically connected with the signal input part of control drive circuit 9;
The power input of above-mentioned voice and drive circuit 4 thereof is electrically connected with the output of above-mentioned DC power supply circuit 8, and the signal input part of voice and drive circuit 4 thereof is electrically connected with the signal output part of micro processor 2;
The signal end of above-mentioned button and condition indication circuit 5 is connected with the signal end transmitted in both directions of micro processor 2;
The signal input part of said temperature display circuit 6 is electrically connected with the signal output part of micro processor 2.
As shown in Figure 3, when this liquid heating heated water at normal temperatures and pressures, its course of work was as follows:
(1) read in the setting boiling point: promptly boiling point comparator 22 reads in the boiling point of setting in the boiling point setting apparatus 21;
(2) measure water temperature: promptly detect the temperature of water, and flow to boiling point comparator 22 by temperature detection and correcting circuit 1;
(3) judge whether measured value equals to set boiling point: i.e. the measured value that transports by 22 pairs of temperature detection of boiling point comparator and correcting circuit 1 and read in and set boiling point and compare; If measured value equals to set boiling point, then judge whether to measure three times; If measured value is not equal to the setting boiling point, then measured value is write the boiling point memory, and then judge whether to measure three times;
(4) judge whether to measure three times: if measure three times, boiling point comparator 22 just can flow to the measured temperature that receives average value calculator 23 values of averaging and calculate; If not measuring three times, then repeating step (2) remeasures water temperature;
(5) mean value calculation: measured temperature value of averaging that 23 pairs of average value calculator receive is calculated, and then the mean value that obtains is flowed to mean value comparator 24;
(6) judge that mean value is whether constant and equal to set boiling point: judge that by mean value comparator 24 mean value is whether constant and equal to set boiling point, if mean value is constant and equal to set boiling point, then make heater H1 outage, heating finishes (END); If mean value is constant and be not equal to the setting boiling point, then repeating step (2) remeasures water temperature.
As shown in Figure 4, when this liquid heating heated water on the plateau, the course of work of this liquid heating memory plateau boiling point was as follows:
(1) measure water temperature: the temperature by temperature detection and correcting circuit 1 detection water flows to micro processor 2 then;
(2) record temperature: by micro processor 2 record temperature;
(3) judge whether to measure three times:, then three measured temperatures are flowed to average value calculator 23 if measure three times; If not measuring three times, then repeating step (1) is measured water temperature again;
(4) mean value calculation: measured temperature value of averaging that 23 pairs of average value calculator receive is calculated, and then the mean value that obtains is flowed to mean value comparator 24;
(5) judge whether mean value is constant: judge by mean value comparator 24 whether mean value is constant,, then will press 6 seconds, thereby the said temperature measured value is stored in the boiling point memory 3, just finished the memory of plateau boiling point like this by the bond distance if mean value is constant; If mean value changes, repeating step (1) is then remembered the course of work of plateau boiling point again.
When needs are remembered the plateau boiling point again, start zero clearing device 25,25 zero clearing devices and just can send a control signal to boiling point memory 3, the boiling points of storage in the boiling point memory 3 are removed automatically, so that remember new boiling point again.
As shown in Figure 5, when this liquid heating was carried out the anti-dry judgement, its course of work was as follows:
(1) reads in the temperature upper limit of setting: read the temperature upper limits of setting in the temperature upper limit setting apparatus 26 by temperature upper limit comparator 27;
(2) measure water temperature: promptly detect the temperature of water, and flow to temperature upper limit comparator 27 by temperature detection and correcting circuit 1;
(3) judge whether measured temperature is equal to or greater than the temperature upper limit of setting: the temperature upper limit by 27 pairs of measured temperatures of temperature upper limit comparator and setting compares; If measured temperature is equal to or greater than the temperature upper limit of setting, control signal of 27 output of temperature upper limit comparator is given control drive circuit 9, control drive circuit 9 carries a signal to implement circuit 10 for control, circuit 10 is implemented in control disconnects heater H1 and AC power circuit 7, heater H1 just stops heating like this, thereby has prevented the generation of dry combustion method phenomenon; If measured temperature is less than the temperature upper limit of setting, then repeating step (2) remeasures water temperature;
As depicted in figs. 1 and 2, above-mentioned micro processor 2 is micro computer process chip U1, be connected with peripheral circuit on the micro computer process chip U1, above-mentioned peripheral circuit comprises capacitor C 7, C8, C9, an electrode of above-mentioned capacitor C 7 is electrically connected another electrode grounding of capacitor C 7 with the VDD pin of micro computer process chip U1; The electrode of capacitor C 8, C9 is electrically connected another electrode grounding of capacitor C 8, C9 with the supply pin VDD5 of micro computer process chip U1;
Said temperature detects and correcting circuit 4 comprises temperature detection reference resistance R7, thermistor R8, temperature detection capacitor C 6 and anti-tampering diode D7, D8, above-mentioned thermistor R8 is probe, thermistor R8 contacts with water to be heated, temperature detection reference resistance R7 is connected with the 16th pin of micro computer process chip U1 with anti-tampering diode D8 serial connection back, thermistor R8 is connected with the 17th pin of micro computer process chip U1 with anti-tampering diode D7 serial connection back, another pin of R7 is electrically connected with temperature detection capacitor C 6 with another pin of R8 and after connecing, insert 12 pin of micro computer process chip U1 simultaneously, another pin ground connection of C6;
Above-mentioned control drive circuit 9 comprises triode Q1 and resistance R 9, and resistance R 9 one terminations are gone into the 22nd pin of micro computer process chip U1, and a termination is gone into the base stage of triode Q1, the grounded emitter of triode Q1.The colelctor electrode of triode Q1 is electrically connected with the coil pin that the relay K 1 of circuit is implemented in control;
Above-mentioned control is implemented circuit 10 and is comprised diode D7, relay K 1, Kick type temperature switch CB1, the coil of diode D7 and relay K 1 and connect after, a termination is gone into the colelctor electrode of triode Q1, the other end is received the rectification of dc source and is exported; The switch contact pin of relay K 1 is received the input of AC power circuit, and the normally opened contact pin of relay K 1 is connected in series AC power circuit is received in the back by heater H1 another input with Kick type temperature switch CB1.
Above-mentioned control is implemented circuit 10 and is cut off being electrically connected of heater H1 and AC power circuit 7 according to control signal, makes heater H1 stop to heat; Continue heating as something unexpected happened, after temperature detection and correcting circuit 1 detected temperature are sent into micro processor 2, micro processor 2 judges whether to arrive the temperature value upper limit of setting, reach and promptly cut off being connected of heater H1 and AC power circuit 7 behind the temperature upper limit, thereby reach the purpose of anti-dry.
Above-mentioned boiling point memory 3 comprises memory U2 and resistance R 4, R5, and resistance R 4, R5 are pull-up resistor, and the end of resistance R 4, R5 is received SDA and the SCL pin of memory U2 respectively, and the other end of resistance R 4, R5 is received the output pin of dc source; The SDA of memory U2 and SCL pin are electrically connected with the 7th pin and the 20th pin of micro computer process chip U1 respectively.
Described voice and drive circuit 4 thereof comprise resistance R 6, speech chip U3, loudspeaker SP1, one of resistance R 6 terminates to the 14th pin of micro computer process chip U1, the other end of resistance R 6 is electrically connected with the 2nd pin of speech chip U3, and the 1st, 4 pin of speech chip U3 are electrically connected with the input of loudspeaker SP1;
Above-mentioned button and condition indication circuit 5 comprise 8 resistance R 10～R17,4 touch-switch S1～S4,4 LED 1～LED4, wherein, resistance R 10 is connected in series the back and is electrically connected with the 3rd pin of micro computer process chip U1 with touch-switch S1, resistance R 11 is connected in series the back and is electrically connected with the 2nd pin of micro computer process chip U1 with touch-switch S2, resistance R 12 is connected in series the back and is electrically connected with the 1st pin of micro computer process chip U1 with touch-switch S3, resistance R 13 is connected in series the back and is electrically connected with the 23rd pin of micro computer process chip U1 with touch-switch S4; More than four road touch-switch the other end and connect the 11st pin common port that micro computer process chip U1 is inserted in the back, resistance R 14 is connected in series the back and is electrically connected with the 24th pin of micro computer process chip U1 with LED 1, resistance R 15 is connected in series the back and is electrically connected with the 13rd pin of micro computer process chip U1 with LED 2, resistance R 16 is connected in series the back and is electrically connected with the 15th pin of micro computer process chip U1 with LED 3, resistance R 17 is connected in series the back and is electrically connected with the 6th pin of micro computer process chip U1 with LED 4, more than four paths of LEDs the other end and connect the 11st pin common port of back access micro computer process chip U1;
Said temperature display circuit 6 comprises 3 eight sections charactron DS1～DS3,7 resistance R 18～R24, one end of resistance R 18 is electrically connected with the 23rd pin of micro computer process chip U1, the other end is electrically connected with the 1st pin of charactron DS1～DS3, one end of resistance R 18 is electrically connected with the 23rd pin of micro computer process chip U1, the other end is electrically connected with the 1st pin of charactron DS1～DS3, one end of resistance R 19 is electrically connected with the 1st pin of micro computer process chip U1, the other end is electrically connected with the 2nd pin of charactron DS1～DS3, one end of resistance R 20 is electrically connected with the 2nd pin of micro computer process chip U1, the other end is electrically connected with the 3rd pin of charactron DS1～DS3, one end of resistance R 21 is electrically connected with the 3rd pin of micro computer process chip U1, the other end is electrically connected with the 4th pin of charactron DS1～DS3, one end of resistance R 22 is electrically connected with the 24th pin of micro computer process chip U1, the other end is electrically connected with the 5th pin of charactron DS1～DS3, one end of resistance R 23 is electrically connected with the 13rd pin of micro computer process chip U1, the other end is electrically connected with the 6th pin of charactron DS1～DS3, one end of resistance R 24 is electrically connected with the 15th pin of micro computer process chip U1, and the other end is electrically connected with the 7th pin of charactron DS1～DS3; The position of charactron DS1 selects pin to be electrically connected with the 8th pin of micro computer process chip U1, and the position of charactron DS2 selects pin to be electrically connected with the 9th pin of micro computer process chip U1, and the position of charactron DS3 selects pin to be electrically connected with the 10th pin of micro computer process chip U1.
When liquid heating connection power supply of the present utility model heats water, temperature detection and correcting circuit 1 are delivered to detected water temperature on the 17th pin, the 16th pin and the 12nd pin of micro computer process chip U1, micro computer process chip U1 becomes the data signal that micro computer process chip U1 can discern through the A/D analog to digital conversion with the measured temperature analog signal, through tabling look-up and exporting, output to eight sections charactron DS1～DS3 by the 1st, 2,3,8,9,10,13,15,23,24 pin through resistance R 18～R24, show the temperature of current water; And output to LED 1～LED4 display unit current working state through resistance R 17, R15, R16, R14 by the 6th, 13,15,24 pin, or standby, or heating, or insulation.
When liquid heating of the present utility model heats water at normal temperatures and pressures, if the temperature＜100 ℃ degree of current water, then export control signal by the 17th pin of micro computer process chip U1, make heater H1 and AC power circuit continue to connect and heat through control drive circuit, control enforcement circuit, otherwise with regard to deenergization; After temperature arrived boiling point 100 degree, micro computer process chip U1 stored through relatively judging the boiling point signal delivered to by the 5th, 6 pin of memory U2; Simultaneously, the sound control signal is delivered to the crus secunda of sound circuit IC and driven loudspeaker SP1 sounding " water has been opened " through resistance R 6 by the 14th pin, the 17th pin output control signal of micro computer process chip U1 disconnects heating unit power simultaneously.Continue heating as something unexpected happened, for example, anhydrous heating, this moment temperature＞100 ℃ degree, the heater temperature detection is sent into micro processor, contains temperature upper limit in the program of micro processor, if temperature upper limit is made as 106 ℃ of degree, micro processor judges whether to arrive temperature upper limit, reaches the AC power circuit that has promptly cut off heater H1 behind the temperature upper limit.
And under the operating position of plateau, after arriving actual specific plateau boiling point, the temperature of water no longer raises, and the temperature of water＜100 ℃ degree, after micro computer process chip U1 detected constant temperature signal in continuous 10 seconds, deliver to the crus secunda of sound circuit IC and drive loudspeaker SP1 sounding through resistance R 6 by the 14th pin, prompting plateau state, need to confirm manually, length was pressed automatic boiling key S4 about 6 seconds, and the automatic boiling indicator lamp is a two-color diode, and become green by 2 seconds the flicker attitude in redness interval this moment, automatically memory is boiling point, and delivers to memory U2 storage.After reusing this memory boiling point of arrival later on, sound horn " water has been opened " the 17th pin output control signal of micro computer process chip U1 simultaneously disconnects heating unit power.And the also corresponding adjustment of temperature upper limit memory is: specific plateau boiling point ℃+6 ℃ of degree.
The above is preferred embodiment of the present utility model only, is not to be used for limiting practical range of the present utility model; Be all equivalents of being done according to claim scope of the present utility model, be claim scope of the present utility model and cover.
Claims (10)
1. liquid heating, comprise power circuit and heater, it is characterized in that: this liquid heating also comprises control executive circuit, temperature detection and correcting circuit and micro processor, above-mentioned micro processor comprises the boiling point identifier that can discern boiling point according to the atmospheric pressure of surrounding environment automatically, above-mentioned boiling point identifier is located in the micro processor, the signal input part of boiling point identifier is electrically connected with the signal output part of temperature detection and correcting circuit, and the signal output part of boiling point identifier is electrically connected with the signal input part of control executive circuit; Above-mentioned control executive circuit is connected electrically between power circuit and the heater, and a link of control executive circuit is electrically connected with an output of power circuit, and another link of control executive circuit is electrically connected with an end of heater.
2. liquid heating as claimed in claim 1, it is characterized in that: described boiling point identifier comprises average value calculator and mean value comparator, above-mentioned average value calculator signal input part is electrically connected with the signal output part of temperature detection and correcting circuit, the signal output part of average value calculator is electrically connected with the signal input part of mean value comparator, and the signal output part of mean value comparator is electrically connected with the signal input part of control executive circuit.
3. liquid heating as claimed in claim 1, it is characterized in that: described boiling point identifier comprises the boiling point setting apparatus, the boiling point comparator, average value calculator and mean value comparator, a signal input part of above-mentioned boiling point comparator is electrically connected with the signal output part of boiling point setting apparatus, another signal input part of boiling point comparator is electrically connected with the signal output part of temperature detection and correcting circuit, the signal output part of boiling point comparator is electrically connected with the signal input part of average value calculator, the signal output part of average value calculator is electrically connected with the signal input part of mean value comparator, and the signal output part of mean value comparator is electrically connected with the signal input part of control drive circuit.
4. as claim 2 or 3 described liquid heating, it is characterized in that: described liquid heating also comprises the boiling point memory, the power input of above-mentioned boiling point memory is electrically connected with the output of above-mentioned power circuit, and the boiling point memory is connected with the mean value comparator transmitted in both directions of boiling point identifier.
5. liquid heating as claimed in claim 4 is characterized in that: described micro processor also comprises a zero clearing device, and above-mentioned zero clearing device is located in the micro processor, and the signal output part of zero clearing device is electrically connected with the signal input part of boiling point memory.
6. liquid heating as claimed in claim 5, it is characterized in that: described micro processor also comprises an anti-dry device, above-mentioned anti-dry device is located in the micro processor, the anti-dry device comprises temperature upper limit setting apparatus and temperature upper limit comparator, the signal output part of said temperature higher limit setting apparatus is electrically connected with a signal input part of temperature upper limit comparator, another signal input part of said temperature higher limit comparator is electrically connected with the signal output part of temperature detection and correcting circuit, and the signal output part of temperature upper limit comparator is electrically connected with the signal input part of control executive circuit.
7. liquid heating as claimed in claim 6 is characterized in that: described power circuit comprises AC power circuit and DC power supply circuit, and above-mentioned control executive circuit comprises control drive circuit and control enforcement circuit;
One road output of above-mentioned AC power circuit is electrically connected with heater, and wherein, an output is electrically connected with an end of heater, and another output is implemented circuit by control and is electrically connected with the other end of heater; Another road output of AC power circuit is electrically connected with the input of DC power supply circuit;
The output of above-mentioned DC power supply circuit is electrically connected with the power input of above-mentioned micro processor, temperature detection and correcting circuit, control drive circuit, control enforcement circuit respectively;
The signal input part of above-mentioned control drive circuit is electrically connected with a signal output part of micro processor; The signal output part of above-mentioned control drive circuit is electrically connected with the signal input part that circuit is implemented in control.
8. liquid heating as claimed in claim 7, it is characterized in that: described liquid heating also comprises voice and drive circuit thereof, the power input of above-mentioned voice and drive circuit thereof is electrically connected with the output of above-mentioned DC power supply circuit, and the signal input part of voice and drive circuit thereof is electrically connected with the signal output part of micro processor.
9. liquid heating as claimed in claim 8 is characterized in that: described liquid heating also comprises button and condition indication circuit and temperature display circuit; The signal end of above-mentioned button and condition indication circuit is connected with the signal end transmitted in both directions of micro processor; The signal input part of said temperature display circuit is electrically connected with the signal output part of micro processor.
10. liquid heating as claimed in claim 9, it is characterized in that: described micro processor is micro computer process chip U1, be connected with peripheral circuit on the micro computer process chip U1, above-mentioned peripheral circuit comprises capacitor C 7, C8, C9, an electrode of above-mentioned capacitor C 7 is electrically connected another electrode grounding of capacitor C 7 with the VDD pin of micro computer process chip U1; The electrode of capacitor C 8, C9 is electrically connected another electrode grounding of capacitor C 8, C9 with the supply pin VDD5 of micro computer process chip U1;
Said temperature detects and correcting circuit comprises temperature detection reference resistance R7, thermistor R8, temperature detection capacitor C 6 and anti-tampering diode D7, D8, above-mentioned thermistor R8 is probe, temperature detection reference resistance R7 is connected with the 16th pin of micro computer process chip U1 with anti-tampering diode D8 serial connection back, thermistor R8 is connected with the 17th pin of micro computer process chip U1 with anti-tampering diode D7 serial connection back, another pin of R7 is electrically connected with temperature detection capacitor C 6 with another pin of R8 and after connecing, insert 12 pin of micro computer process chip U1 simultaneously, another pin ground connection of C6;
Above-mentioned control drive circuit comprises triode Q1 and resistance R 9, and resistance R 9 one terminations are gone into the 22nd pin of micro computer process chip U1, and a termination is gone into the base stage of triode Q1, the grounded emitter of triode Q1.The colelctor electrode of triode Q1 is electrically connected with the coil pin that the relay K 1 of circuit is implemented in control;
Above-mentioned control is implemented circuit and is comprised diode D7, relay K 1, Kick type temperature switch CB1, the coil of diode D7 and relay K 1 and connect after, a termination is gone into the colelctor electrode of triode Q1, the other end is received the rectification of dc source and is exported; The switch contact pin of relay K 1 is received the input of AC power circuit, and the normally opened contact pin of relay K 1 is connected in series AC power circuit is received in the back by heater H1 another input with Kick type temperature switch CB1;
Above-mentioned boiling point memory comprises memory U2 and resistance R 4, R5, and resistance R 4, R5 are pull-up resistor, and the end of resistance R 4, R5 is received SDA and the SCL pin of memory U2 respectively, and the other end of resistance R 4, R5 is received the output pin of dc source; The SDA of memory U2 and SCL pin are electrically connected with the 7th pin and the 20th pin of micro computer process chip U1 respectively;
Above-mentioned voice and drive circuit thereof comprise resistance R 6, speech chip U3, loudspeaker SP1, one of resistance R 6 terminates to the 14th pin of micro computer process chip U1, the other end of resistance R 6 is electrically connected with the 2nd pin of speech chip U3, and the 1st, 4 pin of speech chip U3 are electrically connected with the input of loudspeaker SP1;
Above-mentioned button and condition indication circuit comprise 8 resistance R 10～R17,4 touch-switch S1～S4,4 LED 1～LED4, wherein, resistance R 10 is connected in series the back and is electrically connected with the 3rd pin of micro computer process chip U1 with touch-switch S1, resistance R 11 is connected in series the back and is electrically connected with the 2nd pin of micro computer process chip U1 with touch-switch S2, resistance R 12 is connected in series the back and is electrically connected with the 1st pin of micro computer process chip U1 with touch-switch S3, resistance R 13 is connected in series the back and is electrically connected with the 23rd pin of micro computer process chip U1 with touch-switch S4; More than four road touch-switch the other end and connect the 11st pin common port that micro computer process chip U1 is inserted in the back, resistance R 14 is connected in series the back and is electrically connected with the 24th pin of micro computer process chip U1 with LED 1, resistance R 15 is connected in series the back and is electrically connected with the 13rd pin of micro computer process chip U1 with LED 2, resistance R 16 is connected in series the back and is electrically connected with the 15th pin of micro computer process chip U1 with LED 3, resistance R 17 is connected in series the back and is electrically connected with the 6th pin of micro computer process chip U1 with LED 4, more than four paths of LEDs the other end and connect the 11st pin common port of back access micro computer process chip U1;
The said temperature display circuit comprises 3 eight sections charactron DS1～DS3,7 resistance R 18～R24, one end of resistance R 18 is electrically connected with the 23rd pin of micro computer process chip U1, the other end is electrically connected with the 1st pin of charactron DS1～DS3, one end of resistance R 18 is electrically connected with the 23rd pin of micro computer process chip U1, the other end is electrically connected with the 1st pin of charactron DS1～DS3, one end of resistance R 19 is electrically connected with the 1st pin of micro computer process chip U1, the other end is electrically connected with the 2nd pin of charactron DS1～DS3, one end of resistance R 20 is electrically connected with the 2nd pin of micro computer process chip U1, the other end is electrically connected with the 3rd pin of charactron DS1～DS3, one end of resistance R 21 is electrically connected with the 3rd pin of micro computer process chip U1, the other end is electrically connected with the 4th pin of charactron DS1～DS3, one end of resistance R 22 is electrically connected with the 24th pin of micro computer process chip U1, the other end is electrically connected with the 5th pin of charactron DS1～DS3, one end of resistance R 23 is electrically connected with the 13rd pin of micro computer process chip U1, the other end is electrically connected with the 6th pin of charactron DS1～DS3, one end of resistance R 24 is electrically connected with the 15th pin of micro computer process chip U1, and the other end is electrically connected with the 7th pin of charactron DS1～DS3; The position of charactron DS1 selects pin to be electrically connected with the 8th pin of micro computer process chip U1, and the position of charactron DS2 selects pin to be electrically connected with the 9th pin of micro computer process chip U1, and the position of charactron DS3 selects pin to be electrically connected with the 10th pin of micro computer process chip U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920273495XU CN201582997U (en) | 2009-11-30 | 2009-11-30 | Liquid heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920273495XU CN201582997U (en) | 2009-11-30 | 2009-11-30 | Liquid heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201582997U true CN201582997U (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920273495XU Expired - Fee Related CN201582997U (en) | 2009-11-30 | 2009-11-30 | Liquid heating device |
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| CN (1) | CN201582997U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928210A (en) * | 2016-04-28 | 2016-09-07 | 珠海格力电器股份有限公司 | Control method and device of water heating equipment and water heating equipment |
| CN114145647A (en) * | 2020-12-18 | 2022-03-08 | 佛山市顺德区美的饮水机制造有限公司 | Control method and control device of water making equipment and water making equipment |
| CN115164403A (en) * | 2022-06-01 | 2022-10-11 | 海信(山东)厨卫有限公司 | Water heater and control method thereof |
-
2009
- 2009-11-30 CN CN200920273495XU patent/CN201582997U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928210A (en) * | 2016-04-28 | 2016-09-07 | 珠海格力电器股份有限公司 | Control method and device of water heating equipment and water heating equipment |
| CN105928210B (en) * | 2016-04-28 | 2019-03-01 | 珠海格力电器股份有限公司 | Control method and device of water heating equipment and water heating equipment |
| CN114145647A (en) * | 2020-12-18 | 2022-03-08 | 佛山市顺德区美的饮水机制造有限公司 | Control method and control device of water making equipment and water making equipment |
| CN115164403A (en) * | 2022-06-01 | 2022-10-11 | 海信(山东)厨卫有限公司 | Water heater and control method thereof |
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