Multifunctional intelligent one-key control circuit of tea bar machine

Abstract

The utility model relates to the technical field of household appliances, in particular to a multifunctional intelligent one-key control circuit of a tea bar machine, which comprises a main control module, a water drainage module and a heating module which are sequentially connected, the main control module comprises a key K1, the water drainage module comprises a key K2, a monostable unit and an electromagnetic valve, the monostable unit is controlled by the key K2, and the electromagnetic valve is connected with the main control module. The button K1 and the button K2 are always kept consistent in the pressing and loosening action states, circuits where the button K1 and the button K2 are located are mutually independent, the button K1 and the button K2 are spring buttons, the output end of the monostable unit serves as the output end of the water drainage module, and the output end of the monostable unit is further used for supplying power to the electromagnetic valve. According to the utility model, the master control module and the water drainage module are used for controlling the water adding amount, the electromagnetic valve in the water drainage module can stop water adding for a certain time or at any time, a plurality of keys do not need to be repeatedly operated, the operation is simple, and the practicability is stronger.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, and particularly to a multi-functional intelligent one-key control circuit for a tea bar machine. Background Art

[0002] In modern fast-paced life, people's pursuit of the quality of life is constantly improving, and higher requirements are also put forward for daily drinking water equipment; as a new type of drinking water equipment, the tea bar machine is gradually widely used in places such as families and offices.

[0003] At present, there are a wide variety of tea bar machines on the market, and their operation and use are cumbersome and complex. Most of them are of the touch button plus window display type, with small interface fonts and a complex boiling water process. The first step is to double-click to turn on, the second step is to double-click to draw water, and the third step is to single-click to boil water; in actual operation, the speed of the touch action will also affect the use experience. Such a design increases the difficulty of use for the elderly and children and is relatively inconvenient to use. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a multi-functional intelligent one-key control circuit for a tea bar machine to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] The multi-functional intelligent one-key control circuit for a tea bar machine includes a main control module, a water discharge module, and a heating module connected in sequence. The main control module is used to control the operation of the water discharge module. The main control module includes a button K1, and the button K1 is used to control power supply and water discharge. The water discharge module includes a button K2, a monostable unit, and a solenoid valve. The monostable unit is controlled by the button K2. The button K1 and the button K2 always maintain the same action state when pressed and released. The circuits where the button K1 and the button K2 are located are independent of each other. Both the button K1 and the button K2 are spring buttons. The output end of the monostable unit serves as the output end of the water discharge module, and the output end of the monostable unit is also used to supply power to the solenoid valve. The main control module is also used to control the operation of the solenoid valve. The heating module is used to heat and boil water. The heating module includes a delay unit and a heating unit. The input end of the delay unit is connected to the output end of the water discharge module, and the heating unit is controlled by the delay unit.

[0007] Preferably, the main control module includes a power supply U1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1, a PMOS transistor, an NPN transistor, a relay KA1, and a resistor R5;

[0008] One end of resistor R1 is connected to power supply U1, the other end of resistor R1 is connected to the first end of resistor R2, the second end of resistor R2 is connected to the first end of capacitor C1, resistor R2 is a high-resistance resistor, the second end of capacitor C1 is grounded, the source of the PMOS transistor is connected to power supply U1, the drain of the PMOS transistor outputs power supply U2, the drain of the PMOS transistor is connected to the first end of resistor R3, the second end of resistor R3 is connected to the first end of button K1, the second end of button K1 is connected to the first end of capacitor C1, the first end of resistor R4 is connected to the second end of resistor R3, the second end of resistor R4 is grounded, the gate of the PMOS transistor is connected to the second end of resistor R1, the base of the NPN transistor is connected to the first end of button K1, the emitter of the NPN transistor is grounded, the first end of relay KA1 is connected to the drain of the PMOS transistor, the second end of relay KA1 is grounded, the first end of resistor R5 is connected to the drain of the PMOS transistor, and the second end of resistor R5 is grounded.

[0009] Preferably, the water discharge module includes resistor R6, resistor R7, capacitor C2, 555 timer, switch S1 and solenoid valve, and the 555 timer, resistor R7 and capacitor C2 form a monostable circuit;

[0010] The first end of resistor R6 is connected to power supply U1, the second end of resistor R6 is connected to the first end of button K2, the second end of button K2 is grounded, the first end of resistor R7 is connected to power supply U1, the second end of resistor R7 is connected to the first end of capacitor C2, the second end of capacitor C2 is grounded, both the 4th and 8th pins of the 555 timer are connected to power supply U1, the 7th pin of the 555 timer is connected to the second end of resistor R7, the 2nd pin of the 555 timer is connected to the first end of button K2, the 6th pin of the 555 timer is connected to the first end of capacitor C2, the 1st pin of the 555 timer is grounded, and the 3rd pin of the 555 timer serves as the output end of the water discharge module;

[0011] The first end of switch S1 is connected to the 3rd pin of the 555 timer, the second end of switch S1 is connected to the first end of the solenoid valve, and the second end of the solenoid valve is grounded. Relay KA1 is used to control the on / off of switch S1.

[0012] Preferably, the delay unit in the heating module includes resistor R8, resistor R9, capacitor C3, diode VD1, diode VD2, thyristor VS and relay KA2;

[0013] The first end of resistor R8 is connected to the output end of the water discharge module, the second end of resistor R8 is connected to the first end of capacitor C3, the second end of capacitor C3 is grounded, the first end of resistor R9 is connected to the second end of resistor R8, the second end of resistor R9 is grounded, the positive pole of diode VD1 is connected to the second end of resistor R8, the negative pole of diode VD1 is connected to the positive pole of diode VD2, the negative pole of diode VD2 is connected to the gate of thyristor VS, the positive pole of thyristor VS is connected to the output end of the water discharge module, the negative pole of thyristor VS is connected to the first end of relay KA2, and the second end of relay KA2 is grounded.

[0014] Preferably, the heating unit in the heating module includes switch S2 and an electric kettle;

[0015] The electric kettle is powered by 220V mains electricity. The switch S2 is used to control the operation of the electric kettle, and the relay KA2 is used to control the on / off of the switch S2.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The utility model controls the amount of water added by setting a main control module and a water discharge module. The buttons K1 and K2 always remain consistent in the pressed and released states. The button K1 is used to control the relay KA1, and the button K2 is used as the trigger condition of the monostable circuit, enabling the solenoid valve in the water discharge module to add water for a certain time or stop at any time. There is no need to repeatedly operate multiple buttons, and the operation is simple and the practicability is stronger. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is the circuit diagram of the main control module in the utility model;

[0020] Figure 3 It is the circuit diagram of the water discharge module in the utility model;

[0021] Figure 4 It is the circuit diagram of the heating module in the utility model;

[0022] In the figure:

[0023] 1. Main control module;

[0024] 2. Water discharge module;

[0025] 3. Heating module. Detailed Embodiment

[0026] Next, the technical solutions in the present utility model will be clearly and completely described in conjunction with the drawings in the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-4 , the present utility model provides the following technical solutions:

[0028] The multi-functional intelligent one-key control circuit of the tea bar machine includes a main control module 1, a water discharge module 2, and a heating module 3 connected in sequence. The main control module 1 is used to control the operation of the water discharge module 2. The main control module 1 includes a button K1, and the button K1 is used to control power supply and water discharge. The water discharge module 2 includes a button K2, a monostable unit, and a solenoid valve. The monostable unit is controlled by the button K2. The action states of the button K1 and the button K2 always remain the same when pressed and released. The circuits where the button K1 and the button K2 are located are independent of each other. Both the button K1 and the button K2 are spring buttons. The output end of the monostable unit serves as the output end of the water discharge module 2, and the output end of the monostable unit is also used to supply power to the solenoid valve. The main control module 1 is also used to control the operation of the solenoid valve. The heating module 3 is used to heat water for boiling. The heating module 3 includes a delay unit and a heating unit. The input end of the delay unit is connected to the output end of the water discharge module 2, and the heating unit is controlled by the delay unit. Just pressing the button K1 can control the amount of water added, with simple operation and stronger practicability.

[0029] In this embodiment, the main control module 1 includes a power supply U1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1, a PMOS transistor, an NPN transistor, a relay KA1, and a resistor R5;

[0030] The first end of the resistor R1 is connected to the power supply U1, the second end of the resistor R1 is connected to the first end of the resistor R2, the second end of the resistor R2 is connected to the first end of the capacitor C1, the resistor R2 is a high-impedance resistor, the second end of the capacitor C1 is grounded, the source electrode of the PMOS transistor is connected to the power supply U1, the drain electrode of the PMOS transistor outputs the power supply U2, the drain electrode of the PMOS transistor is connected to the first end of the resistor R3, the second end of the resistor R3 is connected to the first end of the button K1, the second end of the button K1 is connected to the first end of the capacitor C1, the first end of the resistor R4 is connected to the second end of the resistor R3, the second end of the resistor R4 is grounded, the gate electrode of the PMOS transistor is connected to the second end of the resistor R1, the base electrode of the NPN transistor is connected to the first end of the button K1, the emitter electrode of the NPN transistor is grounded, the first end of the relay KA1 is connected to the drain electrode of the PMOS transistor, the second end of the relay KA1 is grounded, the first end of the resistor R5 is connected to the drain electrode of the PMOS transistor, and the second end of the resistor R5 is grounded. The resistor R5 is a current-limiting resistor used to prevent the PMOS transistor from failing to turn off.

[0031] Specifically, the water discharge module 2 includes a resistor R6, a resistor R7, a capacitor C2, a 555 timer, a switch S1, and a solenoid valve. The 555 timer, the resistor R7, and the capacitor C2 form a monostable circuit. The 555 timer is a commonly used and inexpensive integrated circuit chip;

[0032] The first terminal of resistor R6 is connected to power supply U1, the second terminal of resistor R6 is connected to the first terminal of button K2, the second terminal of button K2 is grounded, the first terminal of resistor R7 is connected to power supply U1, the second terminal of resistor R7 is connected to the first terminal of capacitor C2, the second terminal of capacitor C2 is grounded, both the 4th and 8th pins of the 555 timer are connected to power supply U1, the 7th pin of the 555 timer is connected to the second terminal of resistor R7, the 2nd pin of the 555 timer is connected to the first terminal of button K2, the 6th pin of the 555 timer is connected to the first terminal of capacitor C2, the 1st pin of the 555 timer is grounded, and the 3rd pin of the 555 timer serves as the output terminal of the water draining module 2;

[0033] The first terminal of switch S1 is connected to the 3rd pin of the 555 timer, the second terminal of switch S1 is connected to the first terminal of the solenoid valve, the second terminal of the solenoid valve is grounded, relay KA1 is used to control the on / off of switch S1, and relay KA1 can be replaced by other switching tubes.

[0034] It should be noted that the delay unit in the heating module 3 includes resistor R8, resistor R9, capacitor C3, diode VD1, diode VD2, thyristor VS and relay KA2;

[0035] The first terminal of resistor R8 is connected to the output terminal of the water draining module 2, the second terminal of resistor R8 is connected to the first terminal of capacitor C3, the second terminal of capacitor C3 is grounded, the first terminal of resistor R9 is connected to the second terminal of resistor R8, the second terminal of resistor R9 is grounded, the positive electrode of diode VD1 is connected to the second terminal of resistor R8, the negative electrode of diode VD1 is connected to the positive electrode of diode VD2, the negative electrode of diode VD2 is connected to the gate of thyristor VS, the positive electrode of thyristor VS is connected to the output terminal of the water draining module 2, the negative electrode of thyristor VS is connected to the first terminal of relay KA2, and the second terminal of relay KA2 is grounded, so that the heating of water is realized after the water adding operation to prevent dry burning.

[0036] It should be noted that the heating unit in the heating module 3 includes switch S2 and an electric kettle;

[0037] The electric kettle is powered by 220V mains, switch S2 is used to control the operation of the electric kettle, relay KA2 is used to control the on / off of switch S2, and the internal circuit of the electric kettle itself can turn off the electric kettle when the water boils.

[0038] When the multi-functional intelligent one-key control circuit of the tea bar machine of the present utility model is in use, in the main control module 1, the power supply U1 charges the capacitor C1 after passing through the resistor R1 and the resistor R2. After a period of time, the voltage at the first end of the capacitor C1 is equal to the voltage of the power supply U1, the gate voltage of the PMOS transistor is equal to the voltage of the power supply U1, the PMOS transistor is turned off, the output power supply U2 voltage is equal to 0, the base voltage of the NPN transistor is equal to 0, and the NPN transistor is turned off; after pressing the button K1, the capacitor C1 discharges through the button K1, the resistor R4 and the emitter of the NPN transistor, the NPN transistor is saturated and turned on, the gate voltage of the PMOS transistor becomes 0, the PMOS transistor is turned on, the power supply U2 voltage is equal to the power supply U1 voltage. When the voltage on the capacitor C1 discharges to be equal to the turn-on voltage between the base and emitter of the NPN transistor, the current of the saturated conduction of the NPN transistor is provided by the power supply U2 through the resistor R3. After releasing the button K1, the voltage at the collector of the NPN transistor when it is saturated and turned on is close to 0, and the voltage of the capacitor C1 is close to 0; after pressing the button K1 again, the base voltage of the NPN transistor is 0. At the moment of pressing the button K1, the NPN transistor is cut off, the gate voltage of the PMOS transistor is equal to the voltage of the power supply U1, the PMOS transistor is cut off, and the output power supply U2 voltage is equal to 0. Since the resistor R2 is a high-resistance resistor, at the moment of pressing the button K1, the power supply U1 cannot turn on the NPN transistor through the resistor R1 and the resistor R2. After releasing the button K1, the power supply U1 charges the capacitor C1 after passing through the resistor R1 and the resistor R2 until the voltage at the first end of the capacitor C1 is equal to the voltage of the power supply U1;

[0039] The 555 timer, the resistor R7 and the capacitor C2 in the water discharge module 2 form a monostable circuit. When the button K2 is not pressed, the pin 2 of the 555 timer is at a high level, and the output end of the 555 timer outputs a low level. After pressing the button K2, the pin 2 of the 555 timer is at a low level, and the output end of the 555 timer outputs a high level. The power supply U1 charges the capacitor C2 until the voltage of the capacitor C2 is 2 / 3 of the voltage of the power supply U1, the 555 timer outputs a low level, and the time for the output end of the 555 timer to output a high level is determined by the resistor R7 and the capacitor C2;

[0040] The resistor R8 and the capacitor C3 in the heating module 3 form a charging delay network. When the capacitor C3 is charged to the trigger voltage of the gate of the thyristor VS, the thyristor VS is turned on, the relay KA2 works, the diodes VD1 and VD2 are used to increase the value of the trigger voltage, and the resistor R9 is the discharge resistor of the capacitor C3. After the timing ends, the resistor R9 can discharge the voltage on the capacitor C3;

[0041] The key K1 and the key K2 always remain consistent in the action states of being pressed and released. When the user is using, after pressing the key K1 and the key K2, the output power supply U2 voltage is equal to the power supply U1 voltage, the relay KA1 works, the switch S1 closes, the output terminal of the 555 timer changes from low level to high level, and the duration of the high level is determined by the resistor R7 and the capacitor C2. The solenoid valve works and starts to add water to the electric kettle. The water addition amount is controlled by controlling the water addition time. During the specific design, the water addition amount needs to be made not to exceed the highest water level line;

[0042] When the user is using, after pressing the key K1 and the key K2, the water discharge module 2 works normally. After pressing the key K1 again, the output power supply U2 voltage is equal to 0, the relay KA1 stops working, and the branch where the solenoid valve is located is disconnected, so that the water addition can be immediately stopped. The operation is simple and the water can be added as needed.

[0043] While the output terminal of the 555 timer drives the solenoid valve to work, it charges the capacitor C3. After the solenoid valve works for a period of time, the voltage on the capacitor C3 meets the trigger voltage for the thyristor VS to conduct. The diodes VD1 and VD2 are used to extend the time to reach the conduction of the thyristor VS. After the thyristor VS conducts, the relay KA2 works, the switch S2 closes, and the electric kettle works to prevent dry burning. After the water in the electric kettle boils, the circuit can be disconnected through the internal circuit design of the electric kettle itself.

[0044] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. The multifunctional intelligent one-key control circuit of the tea bar machine is characterized by: The invention comprises a main control module (1), a water discharge module (2) and a heating module (3) which are connected in sequence. The main control module (1) is used to control the operation of the water discharge module (2). The main control module (1) comprises a key K1, and the key K1 is used to control power supply and water discharge. The water discharge module (2) comprises a key K2, a monostable unit and a solenoid valve. The monostable unit is controlled by the key K2. The key K1 and the key K2 always maintain the same action state in terms of pressing and releasing. The circuits where the key K1 and the key K2 are located are independent of each other. The key K1 and the key K2 are both spring keys. The output end of the monostable unit serves as the output end of the water discharge module (2). The output end of the monostable unit is also used to supply power to the solenoid valve. The main control module (1) is also used to control the operation of the solenoid valve. The heating module (3) is used to heat and boil water. The heating module (3) comprises a delay unit and a heating unit. The input end of the delay unit is connected to the output end of the water discharge module (2), and the heating unit is controlled by the delay unit.

2. The multifunctional intelligent one-key control circuit of the tea bar machine according to claim 1, characterized in that: The main control module (1) comprises a power supply U1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a capacitor C1, a PMOS tube, an NPN transistor, a relay KA1 and a resistor R5; The first end of resistor R1 is connected to power supply U1, the second end of resistor R1 is connected to the first end of resistor R2, the second end of resistor R2 is connected to the first end of capacitor C1, resistor R2 is a high-resistance resistor, the second end of capacitor C1 is grounded, the source of PMOS tube is connected to power supply U1, the drain of PMOS tube outputs power supply U2, the drain of PMOS tube is connected to the first end of resistor R3, the second end of resistor R3 is connected to the first end of button K1, the second end of button K1 is connected to the first end of capacitor C1, the first end of resistor R4 is connected to the second end of resistor R3, the second end of resistor R4 is grounded, the gate of PMOS tube is connected to the second end of resistor R1, the base of NPN transistor is connected to the first end of button K1, the emitter of NPN transistor is grounded, the first end of relay KA1 is connected to the drain of PMOS tube, the second end of relay KA1 is grounded, the first end of resistor R5 is connected to the drain of PMOS tube, and the second end of resistor R5 is grounded.

3. The multifunctional intelligent one-key control circuit of the tea bar machine according to claim 2 is characterized in that: The water discharge module (2) comprises a resistor R6, a resistor R7, a capacitor C2, a 555 timer, a switch S1 and a solenoid valve, wherein the 555 timer, the resistor R7 and the capacitor C2 form a monostable circuit; The first end of the resistor R6 is connected to the power supply U1, the second end of the resistor R6 is connected to the first end of the button K2, the second end of the button K2 is grounded, the first end of the resistor R7 is connected to the power supply U1, the second end of the resistor R7 is connected to the first end of the capacitor C2, the second end of the capacitor C2 is grounded, the 4th and 8th pins of the 555 timer are both connected to the power supply U1, the 7th pin of the 555 timer is connected to the second end of the resistor R7, the 2nd pin of the 555 timer is connected to the first end of the button K2, the 6th pin of the 555 timer is connected to the first end of the capacitor C2, the 1st pin of the 555 timer is grounded, and the 3rd pin of the 555 timer serves as the output end of the water discharge module (2); The first end of the switch S1 is connected to the 3rd pin of the 555 timer, the second end of the switch S1 is connected to the first end of the solenoid valve, the second end of the solenoid valve is grounded, and the relay KA1 is used to control the on and off of the switch S1.

4. The multifunctional intelligent one-key control circuit of the tea bar machine according to claim 3 is characterized in that: The delay unit in the heating module (3) comprises a resistor R8, a resistor R9, a capacitor C3, a diode VD1, a diode VD2, a thyristor VS and a relay KA2; The first end of the resistor R8 is connected to the output end of the water discharge module (2), the second end of the resistor R8 is connected to the first end of the capacitor C3, the second end of the capacitor C3 is grounded, the first end of the resistor R9 is connected to the second end of the resistor R8, the second end of the resistor R9 is grounded, the positive electrode of the diode VD1 is connected to the second end of the resistor R8, the negative electrode of the diode VD1 is connected to the positive electrode of the diode VD2, the negative electrode of the diode VD2 is connected to the gate of the thyristor VS, the positive electrode of the thyristor VS is connected to the output end of the water discharge module (2), the negative electrode of the thyristor VS is connected to the first end of the relay KA2, and the second end of the relay KA2 is grounded.

5. The multifunctional intelligent one-key control circuit of the tea bar machine according to claim 4 is characterized in that: The heating unit in the heating module (3) comprises a switch S2 and an electric kettle; The electric kettle is powered by 220V AC power. Switch S2 is used to control the operation of the electric kettle, and relay KA2 is used to control the on and off of switch S2.

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