CN212933306U - Anti-overflow control circuit of coffee pot - Google Patents
Anti-overflow control circuit of coffee pot Download PDFInfo
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- CN212933306U CN212933306U CN202022441002.8U CN202022441002U CN212933306U CN 212933306 U CN212933306 U CN 212933306U CN 202022441002 U CN202022441002 U CN 202022441002U CN 212933306 U CN212933306 U CN 212933306U
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Abstract
The utility model discloses an anti-overflow control circuit of a coffee pot, which comprises a single chip microcomputer control circuit internally provided with the overflow temperature of the coffee pot, the single chip microcomputer control circuit is connected with a keying circuit for inputting a control command, a temperature detection circuit for detecting the heating temperature of the coffee pot, a nixie tube display circuit for displaying the working state of the coffee machine, and a driving integrated joint circuit, the driving integrated joint circuit is connected with a heating tube driving circuit for driving a heating tube to heat and stopping the heating of the heating tube when the detection temperature exceeds the internal overflow temperature, and a buzzer circuit for working when the detection temperature exceeds the internal overflow temperature, thereby improving the accuracy of the temperature detection circuit for detecting the coffee pot, when the heating temperature of the coffee pot is detected to exceed the internal overflow temperature, the driving integrated joint circuit controls the heating tube driving circuit to cut off the power of the heating tube and simultaneously controls the buzzer circuit to work, the problem of alarm delay is solved.
Description
[ technical field ]
The utility model relates to a coffee pot anti-overflow goes out control circuit.
[ background art ]
The existing coffee pot control circuit is complex in structure, and the accuracy of the temperature detection device for detecting the anti-overflow is low, so that the heating pipe cannot be accurately and quickly disconnected when the coffee pot is heated to the boiling temperature, the overflow is caused, meanwhile, the alarm delay easily occurs when the alarm is given out when the existing coffee pot is overheated, and a user cannot timely handle the alarm.
[ contents of utility model ]
The utility model overcomes the defects of the prior art and provides an anti-overflow control circuit of a coffee pot.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a coffee pot anti-overflow goes out control circuit which characterized in that: the coffee maker heating device comprises a single chip microcomputer control circuit with a built-in coffee maker overflow temperature, the single chip microcomputer control circuit is connected with a key circuit used for inputting a control command, a temperature detection circuit used for detecting the heating temperature of the coffee maker, a nixie tube display circuit used for displaying the working state of the coffee maker, and a driving integrated joint circuit, the driving integrated joint circuit is connected with a heating tube driving circuit used for driving a heating tube to heat and stopping heating of the heating tube when the detection temperature exceeds the built-in overflow temperature, and a buzzer circuit used for working when the detection temperature exceeds the built-in overflow temperature, the heating tube driving circuit comprises a triode TR3, the base of the triode TR3 is respectively connected with one end of a resistor R3 and a pin of a connecting terminal CN12, the emitter of the triode TR3 and the other end of the resistor R3 are respectively grounded, the collector of the triode TR3, the positive end of a diode D3 is respectively connected with a 12V power supply and one end of a resistor R5, the other end of a resistor R5 is connected with a direct current voltage stabilizing circuit, the other end of a relay coil RLY1 is connected with the 12V power supply, a buzzer circuit comprises a buzzer SP, one end of the buzzer SP is respectively connected with the positive end of a voltage stabilizing diode DZ1 and a pin phi of a connecting terminal CN12 and the negative end of the voltage stabilizing diode CN12 are respectively connected with the 5V power supply, the negative end of the voltage stabilizing diode DZ1 is respectively connected with a pin phi of a connecting terminal CN12 and a switch power circuit, the other end of the buzzer SP is connected with a pin phi of a connecting terminal CN12, and pins CN12 to.
The coffee pot anti-overflow control circuit is characterized in that: the singlechip control circuit is also connected with a direct current voltage stabilizing circuit for voltage stabilization and power supply, and the direct current voltage stabilizing circuit is sequentially connected with a switch power supply circuit and a power supply connecting plug.
The coffee pot anti-overflow control circuit is characterized in that: the temperature detection circuit comprises a temperature detection joint circuit and a temperature probe.
The coffee pot anti-overflow control circuit is characterized in that: the temperature detection joint circuit comprises a connecting terminal CN21, a pin (R) of the connecting terminal CN21 is respectively connected with one end of a resistor R5 and one end of a resistor R7, the other end of the resistor R7 is connected with a 5V power supply, the other end of the resistor R5 is respectively connected with one end of a capacitor C3 and a single chip microcomputer control circuit, a pin (ii) of the connecting terminal CN21 and the other end of the capacitor C3 are respectively grounded, the temperature probe comprises a connecting terminal CN22 connected with a connecting terminal CN21, and two pins of the connecting terminal CN22 are respectively connected with a thermistor NTC.
The coffee pot anti-overflow control circuit is characterized in that: the driving integrated joint circuit comprises a connecting terminal CN11, a pin CN11 is respectively connected with a 5V power supply, an anode end of an electrolytic capacitor E1 and one end of a capacitor C4, a pin CN11 is connected with the anode end of the electrolytic capacitor E1, the cathode end of the electrolytic capacitor E1 and the other end of the capacitor C4 are respectively grounded, and a pin C11 is respectively connected with a singlechip control circuit through a resistor R4, a pin CN11 is connected with the resistor R2, a pin C11 and a pin C11 through a resistor R3.
The utility model has the advantages that:
the utility model provides the high accuracy that is used for detecting coffee pot temperature detect circuit, when detecting coffee pot heating temperature and surpassing built-in temperature that overflows, make heating pipe outage and simultaneous control buzzing circuit work suggestion user through drive integrated joint circuit control heating pipe drive circuit, solved the delayed problem of warning.
[ description of the drawings ]
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the circuit connection of the present invention;
fig. 3 is a second schematic diagram of the circuit connection of the present invention.
[ detailed description of the invention ]
The following description is further detailed with reference to the accompanying drawings and embodiments of the present invention:
as shown in fig. 1-3, an anti-overflow control circuit for a coffee pot comprises a single chip microcomputer control circuit 1 with an overflow temperature of the coffee pot, the single chip microcomputer control circuit 1 is connected with a key circuit 2 for inputting a control instruction, a temperature detection circuit 3 for detecting a heating temperature of the coffee pot, a nixie tube display circuit 4 for displaying a working state of the coffee machine, and a driving integrated connector circuit 5, the driving integrated connector circuit 5 is connected with a heating tube driving circuit 6 for driving a heating tube to heat and stopping heating the heating tube when the detection temperature exceeds the built-in overflow temperature, and a buzzer circuit 7 for working when the detection temperature exceeds the built-in overflow temperature, wherein the temperature detection circuit 3 comprises a temperature detection connector circuit 31 and a temperature probe 32. During operation, the press key circuit 2 inputs a working instruction, the single chip microcomputer control circuit 1 controls the coffee pot to heat according to the input working instruction, and displays the real-time working state of the coffee pot through the nixie tube display circuit 4, in the heating working process of the coffee pot, the temperature detection circuit 3 detects the real-time temperature of the coffee pot and feeds the real-time temperature back to the single chip microcomputer control circuit 1, the single chip microcomputer control circuit 1 compares the real-time detection temperature with the built-in overflow temperature, and when the real-time detection temperature exceeds the built-in overflow temperature, the single chip microcomputer control circuit 1 controls the heating pipe driving circuit 6 to stop the heating pipe work and controls the buzzer circuit 7 to work to prompt a user through the driving integrated.
As shown in fig. 1 and 2, the single chip microcomputer control circuit 1 is further connected with a dc voltage stabilizing circuit 8 for stabilizing voltage and supplying power, the dc voltage stabilizing circuit 8 is sequentially connected with a switching power supply circuit 9 and a power supply connecting plug 10, the power supply connecting plug 10 is connected with a power supply, and the power supply is converted into a dc voltage stabilizing power supply through the switching power supply circuit 9 and the dc voltage stabilizing circuit 8 to supply power to each circuit.
As shown in fig. 3, the temperature detection connector circuit 31 includes a connection terminal CN21, a pin (R) of the connection terminal CN21 is respectively connected to one end of a resistor R5 and one end of a resistor R7, the other end of the resistor R7 is connected to a 5V power supply, the other end of the resistor R5 is respectively connected to one end of a capacitor C3 and the single chip microcomputer control circuit 1, a pin (ii) of the connection terminal CN21 and the other end of the capacitor C3 are respectively grounded, the temperature probe 32 includes a connection terminal CN22 connected to a connection terminal CN21, and two pins of the connection terminal CN22 are respectively connected to a thermistor NTC, so that the accuracy of temperature.
As shown in fig. 2-3, the driving integrated connector circuit 5 includes a connection terminal CN11, a pin of the connection terminal CN11 is connected to the 5V power supply, the positive terminal of the electrolytic capacitor E1 and one end of the capacitor C4, a pin of the connection terminal CN11 is connected to the negative terminal of the electrolytic capacitor E1 and the other end of the capacitor C4 are connected to the ground, a pin of the connection terminal CN11 is connected to the single chip microcomputer control circuit 1 through a resistor R4 and a pin of the connection terminal CN11 is connected to the pin of the connection terminal CN2, a pin of the connection terminal CN11 and a pin of the connection terminal CN11 through a resistor R3; the heating tube driving circuit 6 comprises a triode TR3, the base of the triode TR3 is respectively connected with one end of a resistor R3 and a pin C of a connecting terminal CN12, the emitter of the triode TR3 and the other end of the resistor R3 are respectively grounded, the collector of the triode TR3 is respectively connected with the cathode of a diode D3 and one end of a relay coil RLY1, the anode of the diode D3 is respectively connected with a-12V power supply and one end of a resistor R5, the other end of the resistor R5 is connected with a direct current voltage stabilizing circuit 8, the other end of the relay coil RLY1 is connected with the-12V power supply, the buzzer circuit 7 comprises a buzzer SP, one end of the buzzer SP is respectively connected with the anode of a voltage stabilizing diode DZ1 and the pin C12 and the pin C5V power supply, the cathode of the voltage stabilizing diode DZ1 is respectively connected with a pin C12 and a pin C9, the other end of the connecting terminal CN12 pin C is respectively connected with a pin C voltage stabilizing circuit 8, the heating stop and the buzzing prompt function of the coffee pot are controlled by driving the integrated joint circuit 5, so that the problem of alarm delay is solved.
Claims (5)
1. The utility model provides a coffee pot anti-overflow goes out control circuit which characterized in that: the coffee maker comprises a single chip microcomputer control circuit (1) with a built-in coffee maker overflow temperature, wherein the single chip microcomputer control circuit (1) is connected with a key circuit (2) for inputting a control instruction, a temperature detection circuit (3) for detecting the heating temperature of the coffee maker, a nixie tube display circuit (4) for displaying the working state of the coffee maker and a drive integrated connector circuit (5), the drive integrated connector circuit (5) is connected with a heating tube drive circuit (6) for driving a heating tube to heat and stopping heating of the heating tube when the detection temperature exceeds the built-in overflow temperature and a buzzer circuit (7) for working when the detection temperature exceeds the built-in overflow temperature, the heating tube drive circuit (6) comprises a triode TR3, the base of the triode TR 2 is respectively connected with one end of a resistor R3 and a connecting terminal CN12, the emitter of the triode TR3 and the other end of the resistor R, the collector of a triode TR3 is respectively connected with the cathode of a diode D3 and one end of a relay coil RLY1, the anode of the diode D3 is respectively connected with a 12V power supply and one end of a resistor R5, the other end of the resistor R5 is connected with a direct current voltage stabilizing circuit (8), the other end of the relay coil RLY1 is connected with the 12V power supply, a buzzer circuit (7) comprises a buzzer SP, one end of the buzzer SP is respectively connected with the anode of a voltage stabilizing diode DZ1 and a pin phi and a 5V power supply of a connecting terminal CN12, the cathode of the voltage stabilizing diode DZ1 is respectively connected with a pin phi of a connecting terminal CN12 and a switch power supply circuit (9), the other end of the buzzer SP is connected with a pin phi of a connecting terminal CN12, and the pins from pin phi to pin phi of the connecting terminal CN12 are respectively connected.
2. A coffee pot spill prevention control circuit as in claim 1 further comprising: the singlechip control circuit (1) is also connected with a direct current voltage stabilizing circuit (8) for voltage stabilization and power supply, and the direct current voltage stabilizing circuit (8) is sequentially connected with a switch power supply circuit (9) and a power supply connecting plug (10).
3. A coffee pot spill prevention control circuit as in claim 1 further comprising: the temperature detection circuit (3) comprises a temperature detection joint circuit (31) and a temperature probe (32).
4. A coffee pot spill prevention control circuit as in claim 3 further comprising: the temperature detection joint circuit (31) comprises a connecting terminal CN21, a pin (R) of the connecting terminal CN21 is respectively connected with one end of a resistor R5 and one end of a resistor R7, the other end of the resistor R7 is connected with a 5V power supply, the other end of the resistor R5 is respectively connected with one end of a capacitor C3 and the single chip microcomputer control circuit (1), a pin (ii) of the connecting terminal CN21 and the other end of the capacitor C3 are respectively grounded, the temperature probe (32) comprises a connecting terminal CN22 connected with a connecting terminal CN21, and two pins of the connecting terminal CN22 are respectively connected with a thermistor NTC.
5. A coffee pot spill prevention control circuit as in claim 1 further comprising: the driving integrated connector circuit (5) comprises a connecting terminal CN11, a pin (II) of a connecting terminal CN11 is respectively connected with a 5V power supply, an anode end of an electrolytic capacitor E1 and one end of a capacitor C4, a pin (I) of a connecting terminal CN11, a cathode end of an electrolytic capacitor E1 and the other end of a capacitor C4 are respectively grounded, and a pin (III) of a connecting terminal CN11 is respectively connected with the singlechip control circuit (1) through a resistor R4 and a pin (III) of a connecting terminal CN11 through a resistor R2, a pin (III) of a connecting terminal CN11 and a pin (II) of a connecting terminal CN11 through a resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022441002.8U CN212933306U (en) | 2020-10-28 | 2020-10-28 | Anti-overflow control circuit of coffee pot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022441002.8U CN212933306U (en) | 2020-10-28 | 2020-10-28 | Anti-overflow control circuit of coffee pot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212933306U true CN212933306U (en) | 2021-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022441002.8U Active CN212933306U (en) | 2020-10-28 | 2020-10-28 | Anti-overflow control circuit of coffee pot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212933306U (en) |
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2020
- 2020-10-28 CN CN202022441002.8U patent/CN212933306U/en active Active
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