Control circuit for coffee machine

Abstract

The utility model discloses a control circuit for a coffee machine, which comprises a main control circuit, a first interface circuit, a second interface circuit, a first temperature control circuit, a second temperature control circuit, a coffee boiling circuit, an electromagnetic valve circuit, a water pumping circuit, a buzzer circuit, a status lamp display circuit and a three-color lamp circuit, the main control circuit comprises a control chip IC1, an inductor L1, a chip capacitor EC1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor CX1, a resistor VR1, a resistor RW1, a capacitor C1, a resistor R33, a resistor R34, a chip capacitor EC2, a resistor R5 and an inductor L2, and the first interface circuit comprises an interface CN1 and a resistor R7. The first temperature control circuit and the second temperature control circuit are matched with each other to detect and adjust the coffee temperature, the phenomenon that errors exist between the prepared coffee temperature and the needed coffee temperature is avoided, and the requirement of people for drinking coffee with the accurate temperature is met.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, specifically a control circuit for a coffee machine. Background Technology

[0002] In today's fast-paced life, coffee has become an indispensable part of many people's daily lives. It's not just a powerful tool for staying alert, but also a symbol of a lifestyle. As coffee culture becomes more widespread, more and more people are paying attention to the quality of coffee and the brewing process. Coffee machines provide us with a quick way to make coffee. With simple operations, such as adding coffee beans and pressing a button, we can enjoy a fresh cup of coffee in a short time. Compared to traditional methods like pour-over and French press, coffee machines are more convenient and save us time.

[0003] However, traditional coffee machines have the following drawbacks:

[0004] Traditional coffee machines can only sense and regulate the temperature of the coffee produced by the machine from a single angle, which can easily lead to control errors and fail to meet people's demand for coffee at a precise temperature. Utility Model Content

[0005] The purpose of this invention is to provide a control circuit for a coffee machine to solve the problem mentioned in the background art that traditional coffee machines can only sense and regulate the temperature of the coffee prepared by the coffee machine from a single angle, which is prone to regulation errors and cannot meet people's needs for drinking coffee at a precise temperature.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a control circuit for a coffee machine, comprising a main control circuit, a first interface circuit, a second interface circuit, a first temperature control circuit, a second temperature control circuit, a coffee boiling circuit, a solenoid valve circuit, a water pumping circuit, a buzzer circuit, a status light display circuit, and a tri-color light circuit. The main control circuit includes a control chip IC1, an inductor L1, a surface-mount capacitor EC1, resistors R1, R2, R3, and R4, capacitors CX1, VR1, RW1, C1, R33, and R34, a surface-mount capacitor EC2, resistor R5, and an inductor L2. The first interface circuit includes an interface CN1, resistors R7 and R15. The second interface circuit includes an interface CN2, resistors R12, capacitor C2, and resistor R16. The first temperature control circuit includes an interface CN3 and a resistor R18. The second temperature control circuit includes an interface CN4 and a resistor R19. The coffee boiling circuit includes a solenoid valve circuit, a solenoid valve circuit, a water pumping circuit, a buzzer circuit, a status light display circuit, and a tri-color light circuit. The circuit includes transistor Q1, resistors R10, R23, R21, R8, and transistor TR1; the solenoid valve circuit includes transistor TR3, resistors R25 and R27; the pumping circuit includes transistor TR4, resistors R26 and R28; the buzzer circuit includes a buzzer BUZ and capacitor C7; the status light display circuit includes LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10, resistors R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10; and the tri-color light circuit includes resistors R11, R12, R13, and LED-RGB.

[0007] Preferably, pin 7 of the control chip IC1 is connected to one end of the inductor L1. Pin 6 of the control chip IC1 and the other end of the inductor L1 are both connected to one end of the surface-mount capacitor EC1. The other end of the surface-mount capacitor EC1 is connected to one end of resistor R2, one end of capacitor CX1, and one end of resistor VR1, respectively. The other end of resistor R2 is connected to one end of resistor R1. The other end of resistor R1 is connected to the other end of capacitor CX1, the other end of resistor VR1, one end of resistor RW1, pin 1 of the control chip IC1, and one end of resistor R3, respectively. The other end is connected to one end of resistor R4. Pin 3 of the control chip IC1 is connected to one end of capacitor C1. The other end of capacitor C1 is connected to pin 2 of the control chip IC1, one end of inductor L2, and one end of resistor R33. The other end of resistor R33 is connected to one end of resistor R34 and pin 4 of the control chip IC1. The other end of resistor R34 is connected to the other end of inductor L2, one end of surface-mount capacitor EC2, and one end of resistor R5. Pin 5 of the control chip IC1, the other end of surface-mount capacitor EC2, and the other end of resistor R5 are all grounded.

[0008] Preferably, pin 1 of interface CN1 is connected to one end of resistor R7 and one end of resistor R15, and pin 2 of interface CN1 is grounded. Pin 1 of interface CN2 is connected to one end of resistor R12, one end of capacitor C2 and one end of resistor R16, and pin 2 of interface CN2 and the other end of capacitor C2 are both grounded. Pin 3 of interface CM3 is connected to one end of resistor R18, and pin 2 of interface CN3 is grounded. Pin 3 of interface CM4 is connected to one end of resistor R19, and pin 2 of interface CN4 is grounded.

[0009] Preferably, pin 1 of transistor Q1 is connected to one end of resistor R10 and one end of resistor R23, pin 3 of transistor Q1 is connected to one end of resistor R21, the other end of resistor R21 is connected to one end of resistor R8 and pin 3 of transistor TR1, the other end of resistor R8 is connected to pin 1 of transistor TR1, and pin 2 of transistor Q1 and the other end of resistor R10 are both grounded.

[0010] Preferably, pin 1 of transistor TR3 is connected to one end of resistor R25, pin 2 of transistor TR3 and the other end of resistor R25 are both connected to one end of resistor R27, pin 1 of transistor TR4 is connected to one end of resistor R26, pin 2 of transistor TR4 and the other end of resistor R26 are both connected to one end of resistor R28, and one end of buzzer BUZ is connected to one end of capacitor C7.

[0011] Preferably, one end of resistor R1 is connected to one end of LED1, one end of resistor R2 is connected to one end of LED2, one end of resistor R3 is connected to one end of LED3, one end of resistor R4 is connected to one end of LED4, one end of resistor R5 is connected to one end of LED5, one end of resistor R6 is connected to one end of LED6, one end of resistor R7 is connected to one end of LED7, one end of resistor R8 is connected to one end of LED8, one end of resistor R9 is connected to one end of LED9, and one end of resistor R10 is connected to one end of LED10.

[0012] Preferably, one end of the LED-RGB is connected to one end of the resistor R11, the middle part of the LED-RGB is connected to one end of the resistor R12, and the other end of the LED-RGB is connected to one end of the resistor R13.

[0013] Compared with the prior art, the beneficial effects of this utility model are: by setting a first temperature control circuit and a second temperature control circuit, the first temperature control circuit and the second temperature control circuit cooperate with each other to detect and adjust the coffee temperature, avoiding the phenomenon of error between the prepared coffee and the required coffee temperature, and meeting people's needs for drinking coffee at a precise temperature. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the architecture of this utility model;

[0015] Figure 2 This is a circuit diagram of the main control circuit of this utility model;

[0016] Figure 3 This is a circuit diagram of the first interface circuit of this utility model;

[0017] Figure 4 This is a circuit diagram of the second interface circuit of this utility model;

[0018] Figure 5 This is a circuit diagram of the first temperature control circuit of this utility model;

[0019] Figure 6 This is a circuit diagram of the second temperature control circuit of this utility model;

[0020] Figure 7 This is a circuit diagram of the coffee boiling circuit of this utility model;

[0021] Figure 8 This is a circuit diagram of the solenoid valve circuit of this utility model;

[0022] Figure 9 This is the circuit diagram of the pumping circuit of this utility model;

[0023] Figure 10 This is the circuit diagram of the buzzer circuit of this utility model;

[0024] Figure 11 This is a circuit diagram of the status light display circuit of this utility model;

[0025] Figure 12 This is the circuit diagram of the tri-color lamp circuit of this utility model. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] Please see Figure 1-12 This utility model provides a control circuit for a coffee machine, including a main control circuit, a first interface circuit, a second interface circuit, a first temperature control circuit, a second temperature control circuit, a coffee boiling circuit, a solenoid valve circuit, a water pumping circuit, a buzzer circuit, a status light display circuit, and a tri-color light circuit. The main control circuit includes a control chip IC1, an inductor L1, a surface-mount capacitor EC1, resistors R1, R2, R3, and R4, a capacitor CX1, a resistor VR1, a resistor RW1, a capacitor C1, a resistor R33, and a resistor R34, a surface-mount capacitor EC2, a resistor R5, and an inductor L2. The first interface circuit includes an interface CN1, resistors R7 and R15. The second interface circuit includes an interface CN2, resistor R12, capacitor C2, and resistor R16. The first temperature control circuit includes an interface CN3 and a resistor R18. The second temperature control circuit includes an interface CN4 and a resistor R19. The coffee boiling circuit includes a transistor Q1 and a resistor R... 10. Resistors R23, R21, R8 and transistor TR1; solenoid valve circuit includes transistor TR3, resistors R25 and R27; pumping circuit includes transistor TR4, resistors R26 and R28; buzzer circuit includes buzzer BUZ and capacitor C7; status light display circuit includes LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10; resistors R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10; tri-color light circuit includes resistors R11, R12, R13 and LED-RGB.

[0028] Pin 7 of control chip IC1 is connected to one end of inductor L1. Pin 6 of control chip IC1 and the other end of inductor L1 are both connected to one end of surface-mount capacitor EC1. The other end of surface-mount capacitor EC1 is connected to one end of resistor R2, one end of capacitor CX1, and one end of resistor VR1, respectively. The other end of resistor R2 is connected to one end of resistor R1. The other end of resistor R1 is connected to the other end of capacitor CX1, the other end of resistor VR1, one end of resistor RW1, pin 1 of control chip IC1, and one end of resistor R3, respectively. The other end of resistor R3... One end of the control chip IC1 is connected to one end of the resistor R4. The other end of the capacitor C1 is connected to one end of the control chip IC1, one end of the inductor L2, and one end of the resistor R33. The other end of the resistor R33 is connected to one end of the resistor R34 and one end of the control chip IC1. The other end of the resistor R34 is connected to the other end of the inductor L2, one end of the surface-mount capacitor EC2, and one end of the resistor R5. The other end of the control chip IC1, the other end of the surface-mount capacitor EC2, and the other end of the resistor R5 are all grounded.

[0029] Pin 1 of interface CN1 is connected to one end of resistor R7 and one end of resistor R15 respectively. Pin 2 of interface CN1 is grounded. Pin 1 of interface CN2 is connected to one end of resistor R12, one end of capacitor C2 and one end of resistor R16 respectively. Pin 2 of interface CN2 and the other end of capacitor C2 are both grounded. Pin 3 of interface CM3 is connected to one end of resistor R18. Pin 2 of interface CN3 is grounded. Pin 3 of interface CM4 is connected to one end of resistor R19. Pin 2 of interface CN4 is grounded.

[0030] One pin of transistor Q1 is connected to one end of resistor R10 and one end of resistor R23. One pin of transistor Q1 is connected to one end of resistor R21. The other end of resistor R21 is connected to one end of resistor R8 and one pin of transistor TR1. The other end of resistor R8 is connected to one pin of transistor TR1. One pin of transistor Q1 and the other end of resistor R10 are both grounded.

[0031] One pin of transistor TR3 is connected to one end of resistor R25. The other pin of transistor TR3 and the other end of resistor R25 are both connected to one end of resistor R27. One pin of transistor TR4 is connected to one end of resistor R26. The other pin of transistor TR4 and the other end of resistor R26 are both connected to one end of resistor R28. One end of buzzer BUZ is connected to one end of capacitor C7.

[0032] One end of resistor R1 is connected to one end of LED1, one end of resistor R2 is connected to one end of LED2, one end of resistor R3 is connected to one end of LED3, one end of resistor R4 is connected to one end of LED4, one end of resistor R5 is connected to one end of LED5, one end of resistor R6 is connected to one end of LED6, one end of resistor R7 is connected to one end of LED7, one end of resistor R8 is connected to one end of LED8, one end of resistor R9 is connected to one end of LED9, and one end of resistor R10 is connected to one end of LED10.

[0033] One end of the LED-RGB is connected to one end of the resistor R11, the middle part of the LED-RGB is connected to one end of the resistor R12, and the other end of the LED-RGB is connected to one end of the resistor R13.

[0034] In this embodiment, the main control circuit is responsible for the overall management of the automated operation of the entire process, including grinding, tamping, brewing, and removing residue. It precisely controls parameters such as water temperature and pressure through preset programs to ensure stable coffee quality. The first and second interface circuits facilitate the connection of the coffee machine to external devices. The first and second temperature control circuits monitor the internal temperature of the coffee machine and trigger power-off protection when the temperature exceeds the set threshold. The coffee boiling circuit boils the water used to brew the coffee. The solenoid valve circuit controls the discharge flow rate of the brewed coffee water. The water pumping circuit extracts the water required for the coffee. The buzzer circuit provides audible and visual alarms. The three-color light circuit provides red, green, and blue indicators.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A control circuit for a coffee machine, comprising a main control circuit, a first interface circuit, a second interface circuit, a first temperature control circuit, a second temperature control circuit, a coffee boiling circuit, a solenoid valve circuit, a water pumping circuit, a buzzer circuit, a status light display circuit, and a tri-color light circuit, characterized in that: The main control circuit includes a control chip IC1, inductor L1, surface-mount capacitor EC1, resistors R1, R2, R3, and R4, capacitor CX1, resistor VR1, resistor RW1, capacitor C1, resistor R33, and resistor R34, surface-mount capacitor EC2, resistor R5, and inductor L2. The first interface circuit includes interface CN1, resistors R7 and R15. The second interface circuit includes interface CN2, resistor R12, capacitor C2, and resistor R16. The first temperature control circuit includes interface CN3 and resistor R18. The second temperature control circuit includes interface CN4 and resistor R19. The coffee boiling circuit includes transistor Q1, resistors R10, R23, R21, and R8, and transistor TR1. The solenoid valve circuit includes transistor TR3 and resistor... The pumping circuit includes transistor TR4, resistors R26 and R28, resistor R25 and R27, the buzzer circuit includes a buzzer BUZ and capacitor C7, the status light display circuit includes LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10, resistors R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10, and resistors R11, R12, R13, and LED-RGB.

2. The control circuit for a coffee machine according to claim 1, characterized in that: Pin 7 of the control chip IC1 is connected to one end of inductor L1. Pin 6 of the control chip IC1 and the other end of inductor L1 are both connected to one end of surface-mount capacitor EC1. The other end of surface-mount capacitor EC1 is connected to one end of resistor R2, one end of capacitor CX1, and one end of resistor VR1, respectively. The other end of resistor R2 is connected to one end of resistor R1. The other end of resistor R1 is connected to the other end of capacitor CX1, the other end of resistor VR1, one end of resistor RW1, pin 1 of the control chip IC1, and one end of resistor R3, respectively. The other end of resistor R3... One end of the control chip IC1 is connected to one end of the resistor R4. The third pin of the control chip IC1 is connected to one end of the capacitor C1. The other end of the capacitor C1 is connected to one end of the control chip IC1, one end of the inductor L2, and one end of the resistor R33. The other end of the resistor R33 is connected to one end of the resistor R34 and one end of the control chip IC1. The other end of the resistor R34 is connected to the other end of the inductor L2, one end of the surface mount capacitor EC2, and one end of the resistor R5. The fifth pin of the control chip IC1, the other end of the surface mount capacitor EC2, and the other end of the resistor R5 are all grounded.

3. The control circuit for a coffee machine according to claim 1, characterized in that: One pin of interface CN1 is connected to one end of resistor R7 and one end of resistor R15 respectively. One pin of interface CN1 is grounded. One pin of interface CN2 is connected to one end of resistor R12, one end of capacitor C2 and one end of resistor R16 respectively. One pin of interface CN2 and the other end of capacitor C2 are both grounded. One pin of interface CM3 is connected to one end of resistor R18. One pin of interface CN3 is grounded. One pin of interface CM4 is connected to one end of resistor R19. One pin of interface CN4 is grounded.

4. The control circuit for a coffee machine according to claim 1, characterized in that: One pin of transistor Q1 is connected to one end of resistor R10 and one end of resistor R23. One pin of transistor Q1 is connected to one end of resistor R21. The other end of resistor R21 is connected to one end of resistor R8 and one pin of transistor TR1. The other end of resistor R8 is connected to one pin of transistor TR1. One pin of transistor Q1 and the other end of resistor R10 are both grounded.

5. The control circuit for a coffee machine according to claim 1, characterized in that: One pin of transistor TR3 is connected to one end of resistor R25. The other pin of transistor TR3 and the other end of resistor R25 are both connected to one end of resistor R27. One pin of transistor TR4 is connected to one end of resistor R26. The other pin of transistor TR4 and the other end of resistor R26 are both connected to one end of resistor R28. One end of buzzer BUZ is connected to one end of capacitor C7.

6. The control circuit for a coffee machine according to claim 1, characterized in that: One end of resistor R1 is connected to one end of LED1, one end of resistor R2 is connected to one end of LED2, one end of resistor R3 is connected to one end of LED3, one end of resistor R4 is connected to one end of LED4, one end of resistor R5 is connected to one end of LED5, one end of resistor R6 is connected to one end of LED6, one end of resistor R7 is connected to one end of LED7, one end of resistor R8 is connected to one end of LED8, one end of resistor R9 is connected to one end of LED9, and one end of resistor R10 is connected to one end of LED10.

7. A control circuit for a coffee machine according to claim 1, characterized in that: One end of the LED-RGB is connected to one end of the resistor R11, the middle part of the LED-RGB is connected to one end of the resistor R12, and the other end of the LED-RGB is connected to one end of the resistor R13.

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