CN220403786U - Coffee machine control circuit and coffee machine - Google Patents
Coffee machine control circuit and coffee machine Download PDFInfo
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- CN220403786U CN220403786U CN202321861638.5U CN202321861638U CN220403786U CN 220403786 U CN220403786 U CN 220403786U CN 202321861638 U CN202321861638 U CN 202321861638U CN 220403786 U CN220403786 U CN 220403786U
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- temperature
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- 235000013353 coffee beverage Nutrition 0.000 title claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 101150037899 REL1 gene Proteins 0.000 claims description 20
- 101100099158 Xenopus laevis rela gene Proteins 0.000 claims description 20
- 239000003990 capacitor Substances 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
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Abstract
The application relates to a coffee machine control circuit and coffee machine, include: the temperature module is used for detecting the temperature of a water pipe loop in the coffee machine, the water pipe loop is arranged between the water tank and the water outlet, the temperature module comprises a temperature sensor, and the temperature sensor is arranged on the water pipe loop; the main control module comprises a first signal end and a first control end, wherein the first signal end is connected with the output end of the temperature module, and the main control module is used for sending a shutdown signal through the first control end when detecting that the temperature signal of the temperature module exceeds a threshold value; and the driving signal end of the shutdown module is connected with the first control end and is used for controlling the heater to stop working when receiving the shutdown signal. The water heater can be turned off in time to work when the water in the water tank is used up, so that the taste of the boiled coffee can be kept to be good in freshness, and the problem that potential safety hazards are caused by continuous heating of the coffee machine under the condition of no water can be avoided.
Description
[ field of technology ]
The application relates to the technical field of intelligent household appliances, in particular to a coffee machine control circuit and a coffee machine.
[ background Art ]
With the continuous improvement of the quality of life of people, coffee machines have gradually entered the home of people, and through the use of hot water or steam to contact with coffee powder, delicious coffee drinks are produced in the process of dissolving the coffee powder by the water.
However, when the water in the water tank is used up in the existing coffee machine, the machine can still be continuously heated, so that the taste of the brewed coffee is poor, equipment can be damaged due to high temperature, and potential safety hazards can be caused by continuous heating under the anhydrous condition, such as short circuit, wire burning and the like of the equipment caused by overheating, and the risk of fire or electric shock is increased.
[ utility model ]
In order to solve the problem that the water in the water tank is continuously dry-burned after being used up in the coffee making process of the existing coffee machine, the temperature of the water pipe loop is detected in real time through the temperature module, and when the temperature exceeds a threshold value, the heater is controlled to stop working in time.
The application proposes the following scheme:
a coffee machine control circuit comprising:
the temperature module is used for detecting the temperature of a water pipe loop in the coffee machine, the water pipe loop is arranged between the water tank and the water outlet, the temperature module comprises a temperature sensor, and the temperature sensor is arranged on the water pipe loop;
the main control module comprises a first signal end and a first control end, wherein the first signal end is connected with the output end of the temperature module, and the main control module is used for sending a shutdown signal through the first control end when detecting that the temperature signal of the temperature module exceeds a threshold value;
and the driving signal end of the shutdown module is connected with the first control end and is used for controlling the heater to stop working when receiving the shutdown signal.
The coffee machine control circuit comprises the temperature sensor WEN1, the resistor R18 and the resistor R21, wherein the resistor R20 is connected between the temperature sensor WEN1 and the first end of the resistor R21, the diode D2 is connected between the second end of the resistor R21 and the ground, the diode D1 is connected between the second end of the resistor R18 and the second end of the resistor R21, at least one capacitor is connected between the second end of the resistor R18 and the ground, and the second end of the resistor R18 is the output end of the temperature module.
The coffee machine control circuit comprises a triode Q1, a triode Q2, a relay REL1, a capacitor C7 and a diode Z2, wherein an emitter of the triode Q1 is connected with a first control end of a main control module, a resistor R22 is connected between the first control end of the main control module and the ground, a capacitor C5 is connected between a collector of the triode Q1 and the ground, a resistor R25 is connected between the collector of the triode Q1 and a base of the triode Q2, a resistor R27 is connected between a positive electrode and the emitter of the triode Q2, a resistor R30 is connected between the base of the triode Q1 and the collector of the triode Q2, a resistor R31 is connected between a second end of the resistor R30 and a first control end of the relay REL1, a diode D3 is connected between the first control end of the relay REL1 and the second control end, a resistor R25 is connected between the first control end of the relay REL1 and the second control end of the relay REL 2, a resistor R3 is connected between the second control end of the relay REL1 and the relay C1, and the capacitor Z2 is connected between the second control end of the relay R1 and the relay Z1.
In the coffee machine control circuit, the triode Q1 is an NPN triode, and the triode Q2 is a PNP triode.
The coffee machine control circuit further comprises a power supply module, wherein the power supply module comprises a resistor R24, a resistor R26, a resistor R29 and a rectifier bridge, the resistor R23 is connected between the second end of the resistor R26 and the first end of the resistor R24, a capacitor C4 is connected between the second end of the resistor R24 and the ground, a capacitor CX1 is connected between the second end of the resistor R26 and the first alternating-current end of the rectifier bridge, a resistor R28 is connected between the second end of the resistor R26 and the first end of the resistor R29, the second end of the resistor R29 is connected with the first alternating-current end of the rectifier bridge, and a piezoresistor VR1 is connected between the second end of the resistor R26 and a zero line.
The control circuit of the coffee machine further comprises a display module, wherein the display module comprises a nixie tube.
A coffee machine comprising a coffee machine control circuit as described above.
According to the embodiment of the utility model, the temperature of the water pipe loop is detected in real time through the temperature module, when the temperature exceeds the threshold value, the heater is controlled to stop working in time, and the heater can be closed to work in time when the water in the water tank is used up, so that the taste of the boiled coffee can keep good freshness, and the problem of potential safety hazard caused by continuous heating of the coffee machine under the condition of no water can be avoided.
[ description of the drawings ]
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a control circuit of a coffee machine according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of a temperature module, a shutdown module, and a power module.
[ detailed description ] of the utility model
Referring to fig. 1 to 2, the present embodiment provides a coffee machine control circuit, which includes:
the temperature module 1 is used for detecting the temperature of a water pipe loop in the coffee machine, the water pipe loop is arranged between the water tank and the water outlet, the temperature module 1 comprises a temperature sensor, and the temperature sensor is arranged on the water pipe loop;
the temperature module 1 is arranged on the water pipe loop to detect the temperature, so that the heating wire can be turned off in time when the water tank is in a water shortage state, and equipment damage is avoided.
As a preferred solution, but not particularly limited, the temperature module 1 includes a temperature sensor WEN1, a resistor R18, and a resistor R21, where a resistor R20 is connected between the temperature sensor WEN1 and a first end of the resistor R21, a diode D2 is connected between a second end of the resistor R21 and ground, a diode D1 is connected between a second end of the resistor R18 and a second end of the resistor R21, and at least one capacitor is connected between the second end of the resistor R18 and ground, and a second end of the resistor R18 is an output end of the temperature module 1.
According to the embodiment, the temperature on the water pipe loop is obtained in real time through the temperature sensor WEN1 and is transmitted to the first signal end, and the main control signal end detects whether the temperature signal exceeds the threshold value in real time, so that the accuracy and reliability of the temperature can be better ensured.
The main control module comprises a first signal end and a first control end, wherein the first signal end is connected with the output end of the temperature module 1, and the main control module is used for sending a shutdown signal through the first control end when detecting that the temperature signal of the temperature module 1 exceeds a threshold value;
as a preferred solution, but not particularly limited, the main control module includes a main control chip, the model of the main control chip is CQ6652, the main control module receives a temperature signal through a first signal end and sends a shutdown signal through a first control end, and can timely turn off the heater when detecting that the temperature signal of the temperature module 1 exceeds a threshold value, so as to ensure that the taste of the brewed coffee maintains good freshness, and avoid the problem that the safety hidden trouble is caused by continuous heating of the coffee machine under the anhydrous condition
And the shutdown module 3 is connected with the first control end by a driving signal end of the shutdown module 3 and is used for controlling the heater to stop working when receiving a shutdown signal.
In this embodiment, the driving signal end of the shutdown module 3 is connected to the first control end, and receives the shutdown signal of the main control module in real time, when the operation is normal, the first control end outputs a low-level signal to maintain the relay REL1 to be closed, and if the temperature exceeds the threshold value, the first control end outputs a high-level signal to disconnect the relay REL 1.
As a preferred solution, but not particularly limited, the shutdown module 3 includes a transistor Q1, a transistor Q2, a relay REL1, a capacitor C7, and a diode Z2, where an emitter of the transistor Q1 is connected to a first control end of the main control module, a resistor R22 is connected between the first control end of the main control module and the ground, a capacitor C5 is connected between a collector of the transistor Q1 and the ground, a resistor R25 is connected between the collector of the transistor Q1 and a base of the transistor Q2, a resistor R27 is connected between a positive and an emitter of the transistor Q2, a resistor R30 is connected between the base of the transistor Q1 and the collector of the transistor Q2, a resistor R31 is connected between a second end of the resistor R30 and a first control end of the relay REL1, a diode D3 is connected between the first control end of the relay REL1 and the second control end, a resistor R25 is connected between the first control end of the relay REL1 and the second control end of the relay REL 2, a resistor C3 is connected between the second control end of the relay REL1 and the relay EC 1, and the capacitor Z2 is connected between the second control end of the relay EC 1 and the relay Z1.
According to the embodiment, the main control module sends a shutdown signal to the emitter of the triode Q1, the shutdown signal is a low-level signal, the base of the triode Q1 is communicated to a power supply through the resistor R30 and the resistor R31, so that the base of the triode Q1 is in a high-level state, the triode Q1 is conducted, the low-level signal is input to the base of the triode Q2, the triode Q2 is conducted, the triode Q2 in turn continuously provides a stable high-level signal for the triode Q1, the triode is conducted stably, the relay REL1 is closed to heat a heating wire of the coffee machine, the coffee machine runs normally, when the temperature signal of the temperature module 1 exceeds a threshold value, the first signal end of the main control module outputs the high-level signal, so that the triode Q1 and the triode Q2 are turned off, the relay REL1 is turned off, the heating wire stops working, and the control process is stable and reliable.
As a preferred solution, but not particularly limited, the transistor Q1 is an NPN transistor, and the transistor Q2 is a PNP transistor.
According to the embodiment, the triode Q1 is set to be an NPN type triode, the triode Q2 is set to be a PNP type triode, so that control can be more stable and reliable, a circuit function is realized by utilizing the characteristics of the triode, and the setting of devices and the cost can be reduced well.
As a preferred solution, but not particularly limited, the power module 2 further includes a resistor R24, a resistor R26, a resistor R29, and a rectifier bridge, where a resistor R23 is connected between a second end of the resistor R26 and a first end of the resistor R24, a capacitor C4 is connected between a second end of the resistor R24 and ground, a capacitor CX1 is connected between a second end of the resistor R26 and a first ac end of the rectifier bridge, a resistor R28 is connected between a second end of the resistor R26 and a first end of the resistor R29, a second end of the resistor R29 is connected with a first ac end of the rectifier bridge, and a varistor VR1 is connected between a second end of the resistor R26 and a zero line.
According to the embodiment, the power supply input by the power supply line is filtered through the power supply module 2, the rectification is carried out through the rectifier bridge, and finally the voltage is reduced through the resistor string, so that a stable and reliable direct-current power supply is supplied to the circuit, and the circuit can stably acquire a temperature signal of the water pipe loop and control the heating wire to stop working.
As a preferred solution, but not particularly limited, the display device further comprises a display module, wherein the display module comprises a nixie tube.
In order to facilitate a user to check the real-time temperature of the coffee machine and the running state of the coffee machine in time, the embodiment is provided with a display module for displaying information on the shell of the coffee machine, and the display module can be an LCD display screen or a TFT display screen besides a nixie tube, so that the user can conveniently and rapidly know the state of the coffee machine, and water is added in time or the coffee machine is turned off in time.
According to the embodiment, the temperature of the water pipe loop is detected in real time through the temperature module 1, when the temperature exceeds the threshold value, the heater is controlled to stop working in time, and when the water in the water tank is used up, the heater can be closed to work in time, so that the taste of the boiled coffee can keep good freshness, and the problem that potential safety hazards are caused by continuous heating of the coffee machine under the condition of no water can be avoided.
The embodiment also provides a coffee machine, comprising the coffee machine control circuit.
The coffee machine of this embodiment carries out real-time detection to the water pipe return circuit through being equipped with temperature sensor on the water pipe return circuit between water tank and delivery port, when the main control module on the coffee machine mainboard detects that temperature module 1's temperature signal exceeds the threshold value, sends the shutdown signal through first control end to the heater stop work on the control water pipe return circuit can in time close the heater work when the water of water tank is used up, so that the taste of the coffee of boiling keeps fine freshness, and can avoid the coffee machine to continue the heating under anhydrous condition and cause the problem of potential safety hazard.
The above description of one embodiment provided in connection with a particular disclosure is not intended to limit the practice of this application to that particular disclosure. Any approximation, or substitution of techniques for the methods, structures, etc. of the present application or for the purposes of making a number of technological deductions or substitutions based on the concepts of the present application should be considered as the scope of protection of the present application.
Claims (7)
1. A coffee machine control circuit, comprising:
the temperature module (1) is used for detecting the temperature of a water pipe loop in the coffee machine, the water pipe loop is arranged between the water tank and the water outlet, the temperature module (1) comprises a temperature sensor, and the temperature sensor is arranged on the water pipe loop;
the main control module comprises a first signal end and a first control end, wherein the first signal end is connected with the output end of the temperature module (1), and the main control module is used for sending a shutdown signal through the first control end when detecting that the temperature signal of the temperature module (1) exceeds a threshold value;
and the shutdown module (3), wherein a driving signal end of the shutdown module (3) is connected with the first control end and is used for controlling the heater to stop working when receiving a shutdown signal.
2. A coffee machine control circuit according to claim 1, wherein the temperature module (1) comprises a temperature sensor WEN1, a resistor R18 and a resistor R21, wherein a resistor R20 is connected between the temperature sensor WEN1 and the first end of the resistor R21, a diode D2 is connected between the second end of the resistor R21 and the ground, a diode D1 is connected between the second end of the resistor R18 and the second end of the resistor R21, at least one capacitor is connected between the second end of the resistor R18 and the ground, and the second end of the resistor R18 is the output end of the temperature module (1).
3. The coffee machine control circuit as claimed in claim 1, wherein the shutdown module (3) comprises a triode Q1, a triode Q2, a relay REL1, a capacitor C7 and a diode Z2, wherein an emitter of the triode Q1 is connected with a first control end of the main control module, a resistor R22 is connected between the first control end and the ground of the main control module, a capacitor C5 is connected between a collector of the triode Q1 and the ground, a resistor R25 is connected between a collector of the triode Q1 and a base of the triode Q2, a resistor R27 is connected between a positive electrode of the triode Q2 and the emitter of the triode Q2, a resistor R30 is connected between a second end of the resistor R30 and a first control end of the relay REL1, a diode D3 is connected between a first control end and a second control end of the relay REL1, a capacitor C3 is connected between a second control end of the relay REL1 and the second control end of the relay REL1, a resistor R27 is connected between a second control end of the relay REL1 and the relay EC 1, and a capacitor C2 is connected between a second control end of the relay REL1 and the relay Z2.
4. A coffee machine control circuit as claimed in claim 3, wherein said transistor Q1 is an NPN transistor and said transistor Q2 is a PNP transistor.
5. The coffee machine control circuit as recited in claim 1 further comprising a power module (2), wherein the power module (2) comprises a resistor R24, a resistor R26, a resistor R29 and a rectifier bridge, wherein a resistor R23 is connected between a second end of the resistor R26 and a first end of the resistor R24, a capacitor C4 is connected between the second end of the resistor R24 and ground, a capacitor CX1 is connected between the second end of the resistor R26 and a first ac end of the rectifier bridge, a resistor R28 is connected between the second end of the resistor R26 and the first ac end of the resistor R29, and a varistor VR1 is connected between the second end of the resistor R26 and a zero line.
6. The coffee machine control circuit of claim 1, further comprising a display module, the display module comprising a nixie tube.
7. A coffee machine comprising a coffee machine control circuit as claimed in any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321861638.5U CN220403786U (en) | 2023-07-14 | 2023-07-14 | Coffee machine control circuit and coffee machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321861638.5U CN220403786U (en) | 2023-07-14 | 2023-07-14 | Coffee machine control circuit and coffee machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220403786U true CN220403786U (en) | 2024-01-30 |
Family
ID=89643912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321861638.5U Active CN220403786U (en) | 2023-07-14 | 2023-07-14 | Coffee machine control circuit and coffee machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220403786U (en) |
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2023
- 2023-07-14 CN CN202321861638.5U patent/CN220403786U/en active Active
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