Single-motor control circuit and coffee machine

Abstract

The utility model provides a single-motor control circuit and a coffee maker, the circuit comprises a driving controller, a brewing switch circuit, a water injection direction moving switch circuit and a bean grinding switch circuit, the brewing switch circuit comprises a first triode, a first resistor and a first field effect transistor; the water injection direction moving switch circuit comprises a second triode, a second resistor and a second field-effect tube, the bean grinding switch circuit comprises a third triode, a third resistor and a third field-effect tube, and when the brewing button is clicked, signals are output through the first triode and the first field-effect tube in sequence to execute coffee powder brewing operation; when the water injection direction moving button is clicked, a signal is output through the second triode and the second field effect transistor in sequence, and water injection direction moving operation is executed; when a bean grinding button is clicked, a signal is output through the third triode and the third field-effect tube in sequence, and coffee bean grinding operation is executed. The operation can be realized only by the control of the driving controller, so that the manufacturing cost of the coffee machine is reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of coffee machines, in particular to a single-motor control circuit and a coffee machine. BACKGROUND

[0002] With the continuous improvement of people's living standards, people's daily coffee consumption increases, and household small coffee machines are becoming more and more popular.

[0003] At present, some coffee machines integrate bean grinding, brewing, and water injection direction into one. Bean grinding is mainly driven by a motor to rotate a stirring knife or a grinding disc. These need to be controlled by a bean grinding drive motor. Brewing is controlled by temperature sensing and water flow control, which needs to be controlled by a brewing drive motor. Controlling the water injection direction such as central water injection or spiral water injection is driven by a direction moving motor. The above coffee machines need multiple drive motors to achieve the corresponding functions, which increases the manufacturing cost of the coffee machine and makes the overall structure and circuit design more complex.

[0004] Therefore, a circuit is needed that can achieve the functions of bean grinding, brewing, and changing the water injection direction through a single drive. CONTENT OF THE INVENTION

[0005] The purpose of the present disclosure is to overcome the deficiencies in the prior art and provide a single-motor control circuit and a coffee machine that can simultaneously control the states of bean grinding, brewing, and changing the water injection direction by using only a single drive.

[0006] The purpose of the present disclosure is achieved by the following technical solutions:

[0007] A single motor control circuit for controlling the states of grinding beans, brewing and changing water injection direction, comprising a drive controller, a brewing switch circuit, a water injection direction moving switch circuit and a grinding switch circuit, a power supply end of the drive controller is used for connecting a reference voltage; the brewing switch circuit comprises a first triode, a first resistor and a first field effect tube, a first end of the first triode is used for connecting a direct current voltage, a second end of the first triode is respectively connected to a control end of the first field effect tube and a first end of the first resistor, a control end of the first triode is used for connecting a brewing signal enable button, a first end of the first field effect tube is connected to an output end of the drive controller, a second end of the first field effect tube is used for connecting a brewing signal output terminal, and a second end of the first resistor is grounded; the water injection direction moving switch circuit comprises a second triode, a second resistor and a second field effect tube, a first end of the second triode is used for connecting a direct current voltage, a second end of the second triode is respectively connected to a control end of the second field effect tube and a first end of the second resistor, a control end of the second triode is used for connecting a water injection direction moving signal enable button, a first end of the second field effect tube is connected to an output end of the drive controller, a second end of the second field effect tube is used for connecting a water injection direction moving signal output terminal, and a second end of the second resistor is grounded; the grinding switch circuit comprises a third triode, a third resistor and a third field effect tube, a first end of the third triode is used for connecting a direct current voltage, a second end of the third triode is respectively connected to a control end of the third field effect tube and a first end of the third resistor, a control end of the third triode is used for connecting a grinding signal enable button, a first end of the third field effect tube is connected to an output end of the drive controller, a second end of the third field effect tube is used for connecting a grinding signal output terminal, and a second end of the third resistor is grounded.

[0008] In one of the embodiments, the brewing switch circuit further comprises a fourth resistor, a first end of the fourth resistor is connected to the control end of the first triode, and a second end of the fourth resistor is connected to the second end of the first resistor.

[0009] In one of the embodiments, the water injection direction moving switch circuit further comprises a fifth resistor, a first end of the fifth resistor is connected to the control end of the second triode, and a second end of the fifth resistor is connected to the second end of the second resistor.

[0010] In one of the embodiments, the grinding switch circuit further comprises a sixth resistor, a first end of the sixth resistor is connected to the control end of the third triode, and a second end of the sixth resistor is connected to the second end of the third resistor.

[0011] In one of the embodiments, the single-motor control circuit further comprises a seventh resistor, a signal input end of the drive controller is configured to receive an external enable signal, a first end of the seventh resistor is connected to the signal input end of the drive controller, and a second end of the seventh resistor is connected to the ground.

[0012] In one of the embodiments, the single-motor control circuit further comprises an eighth resistor, a first end of the eighth resistor is connected to a voltage compensation end of the drive controller, and a second end of the eighth resistor is connected to the ground.

[0013] In one of the embodiments, the single-motor control circuit further comprises a filter capacitor group, an upper half of the filter capacitor group is connected to a power supply end of the drive controller, and a lower half of the filter capacitor group is connected to the ground.

[0014] In one of the embodiments, the filter capacitor group comprises a first filter capacitor and a second filter capacitor, an upper half of the first filter capacitor is connected to the power supply end of the drive controller and an upper half of the second filter capacitor respectively, a lower half of the first filter capacitor is connected to a lower half of the second filter capacitor, and the lower half of the second filter capacitor is connected to the ground.

[0015] In one of the embodiments, the first filter capacitor is a high-frequency filter capacitor.

[0016] In one of the embodiments, the second filter capacitor is a low-frequency filter capacitor.

[0017] A coffee machine comprising the single-motor control circuit according to any one of the above embodiments.

[0018] Compared with the prior art, the present disclosure has at least the following advantages:

[0019] In the case where the coffee machine adopts the single-motor control circuit, when the brewing button is clicked, the control end of the first triode receives a signal to turn on, thereby turning on the first field effect tube, and the brewing enable signal is output in sequence through the first triode and the first field effect tube, and the coffee powder brewing operation is performed; when the water injection direction moving button is clicked, the control end of the second triode receives a signal to turn on, thereby turning on the second field effect tube, and the water injection direction moving enable signal is output in sequence through the second triode and the second field effect tube, and the water injection direction moving operation is performed; when the coffee bean grinding button is clicked, the control end of the third triode receives a signal to turn on, thereby turning on the third field effect tube, and the coffee bean grinding enable signal is output in sequence through the third triode and the third field effect tube, and the coffee bean grinding operation is performed. The above operations are realized without increasing an additional independent motor, and only the state of the above functions is controlled by the drive controller, thereby reducing the complexity of the structure and the circuit of the coffee machine, and further reducing the manufacturing cost of the coffee machine. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the present disclosure, and therefore should not be considered as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0021] Figure 1 Part of the circuit diagram of the single motor control circuit in an embodiment;

[0022] Figure 2 Circuit diagram of the brewing switch circuit connected with the single motor control circuit shown in Figure 1

[0023] Circuit diagram of the water injection direction moving switch circuit connected with the single motor control circuit shown in Figure 3 Figure 1 Circuit diagram of the water injection direction moving switch circuit connected with the single motor control circuit shown in

[0024] Figure 4 Circuit diagram of the water injection direction moving switch circuit connected with the single motor control circuit shown in Figure 1

[0025] Reference signs: 10, single motor control circuit; 100, drive controller; 200, brewing switch circuit; 300, water injection direction moving switch circuit; 400, bean grinding switch circuit; 500, filter capacitor group; Q3, first triode; R5, first resistor; M1, first field effect transistor; Q9, second triode; R10, second resistor; M2, second field effect transistor; Q7, third triode; R11, third resistor; M3, third field effect transistor; Q4, first N-type MOS transistor; Q2, second N-type MOS transistor; Q6, third N-type MOS transistor; Q12, fourth N-type MOS transistor; Q5, fifth N-type MOS transistor; Q11, sixth N-type MOS transistor; R20, fourth resistor; R21, fifth resistor; R22, sixth resistor; R2, seventh resistor; R1, eighth resistor; C13, first filter capacitor; C14, second filter capacitor. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present disclosure, the following will make a more comprehensive description of the present disclosure with reference to the related drawings. The preferred embodiments of the present disclosure are shown in the drawings. However, the present disclosure can be implemented in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thorough and comprehensive.

[0027] ​​It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions as used herein are for illustrative purposes only and are not intended to be limiting.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description of the disclosure herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0029] For better understanding of the technical solutions and beneficial effects of the present disclosure, the present disclosure will be further described in detail below in conjunction with specific embodiments:

[0030] Please refer to Figures 1 to 4It is single motor control circuit 10 of an embodiment of the utility model, be used for controlling the state of grinding bean, brewing and change water injection direction, including drive controller 100, brewing switch circuit 200, water injection direction mobile switch circuit 300 and grinding bean switch circuit 400, the power end of drive controller 100 is used for connecting reference voltage;Brewing switch circuit 200 includes first triode Q3, first resistance R5 and first field effect tube M1, the first end of first triode Q3 is used for connecting direct current voltage, the second end of first triode Q3 is connected respectively first field effect tube M1's control end and first resistance R5's first end, the control end of first triode Q3 is used for connecting brewing signal enable button, the first end of first field effect tube M1 is connected drive controller 100's output, the second end of first field effect tube M1 is used for connecting brewing signal output terminal P1, the second end of first resistance R5 is connected ground;Water injection direction mobile switch circuit 300 includes second triode Q9, second resistance R10 and second field effect tube M2, the first end of second triode Q9 is used for connecting direct current voltage, the second end of second triode Q9 is connected respectively second field effect tube M2's control end and second resistance R10's first end, the control end of second triode Q9 is used for connecting water injection direction mobile signal enable button, the first end of second field effect tube M2 is connected drive controller 100's output, the second end of second field effect tube M2 is used for connecting water injection direction mobile signal output terminal P2, the second end of second resistance R10 is connected ground;Grinding bean switch circuit 400 includes third triode Q7, third resistance R11 and third field effect tube M3, the first end of third triode Q7 is used for connecting direct current voltage, the second end of third triode Q7 is connected respectively third field effect tube M3's control end and third resistance R11's first end, the control end of third triode Q7 is used for connecting grinding bean signal enable button, the first end of third field effect tube M3 is connected drive controller 100's output, the second end of third field effect tube M3 is used for connecting grinding bean signal output terminal P3, the second end of third resistance R11 is connected ground.

[0031] In the embodiment, when the brewing button is clicked, the control end of the first triode Q3 receives a signal to turn on, thereby turning on the first field effect tube M1, and a brewing enable signal will be output in turn through the first triode Q3 and the first field effect tube M1, and a coffee powder brewing operation is performed; when the water injection direction moving button is clicked, the control end of the second triode Q9 receives a signal to turn on, thereby turning on the second field effect tube M2, and a water injection direction moving enable signal will be output in turn through the second triode Q9 and the second field effect tube M2, and a water injection direction moving operation is performed; when the coffee bean grinding button is clicked, the control end of the third triode Q7 receives a signal to turn on, thereby turning on the third field effect tube M3, and a coffee bean grinding enable signal will be output in turn through the third triode Q7 and the third field effect tube M3, and a coffee bean grinding operation is performed. The above operations are realized without adding an additional independent motor, and only the state of the above functions is controlled by the drive controller 100, thereby reducing the complexity of the coffee machine in structure and circuit, and further reducing the manufacturing cost of the coffee machine.

[0032] It can be understood that, when the brewing button is clicked, the first triode Q3 and the first field effect tube M1 are turned on in turn, and a corresponding signal is output from the brewing signal output terminal P1 after passing through the first triode Q3 and the first field effect tube M1, thereby starting the controller to drive the water feeding mechanism to perform a brewing action according to the signal state; when the water injection direction moving button is clicked, the second triode Q9 and the second field effect tube M2 are turned on in turn, and a corresponding signal is output from the water injection direction moving signal output terminal P2 after passing through the second triode Q9 and the second field effect tube M2, thereby driving the controller 100 to output a control signal to control the water outlet direction of the water nozzle to move in the form of X-Y axis, so that the functions of central water injection, edge water injection or spiral water injection can be realized to adapt to different brewing modes of coffee powder; when the coffee bean grinding button is clicked, the third triode Q7 and the third field effect tube M3 are turned on in turn, and a corresponding signal is output from the coffee bean grinding signal output terminal P3 after passing through the third triode Q7 and the third field effect tube M3, thereby driving the controller 100 to output a control signal to drive the coffee bean grinding module to perform a coffee bean grinding operation.

[0033] In the embodiment, the first triode Q3, the second triode Q9 and the third triode Q7 are all NPN type triodes, the first end of the first triode Q3 is a collector, the second end is an emitter, and the control end is a base; the first end of the second triode Q9 is a collector, the second end is an emitter, and the control end is a base; the first end of the third triode Q7 is a collector, the second end is an emitter, and the control end is a base.

[0034] In another embodiment, the model of the drive controller 100 is A4988SETTR-T.

[0035] As Figure 2As shown, in one embodiment, the first field-effect transistor M1 includes a first N-type MOSFET Q4 and a second N-type MOSFET Q2. The second terminal of the first transistor Q3 is connected to the first terminal of the first resistor R5, the control terminal of the first N-type MOSFET Q4, and the control terminal of the second N-type MOSFET Q2, respectively. The first terminal of the first N-type MOSFET Q4 is connected to one output terminal of the drive controller 100, and the second terminal of the first N-type MOSFET Q4 is connected to one receiving terminal of the bubble signal output terminal P1. The first terminal of the second N-type MOSFET Q2 is connected to two output terminals of the drive controller 100, and the second terminal of the second N-type MOSFET Q2 is connected to two receiving terminals of the bubble signal output terminal P1. On one hand, the first N-type MOSFET Q4 is used to connect to the power supply section of the brewing signal output terminal P1, so that the output voltage signal powers the brewing signal output terminal P1 after passing through the MOSFET. On the other hand, the second N-type MOSFET Q2 is used to connect to the data section of the brewing signal output terminal P1, so that after the data signal is turned on by the second N-type MOSFET Q2, data transmission occurs between the brewing signal output terminal P1 and the drive controller 100. In this embodiment, the control terminal of the first N-type MOSFET Q4 is the gate, the first terminal is the drain, and the second terminal is the source; the control terminal of the second N-type MOSFET Q2 is the gate, the first terminal is the drain, and the second terminal is the source.

[0036] like Figure 3 As shown, in one embodiment, the second field-effect transistor M2 includes a third N-type MOSFET Q6 and a fourth N-type MOSFET Q12. The second terminal of the second transistor Q9 is connected to the first terminal of the second resistor R10, the control terminal of the third N-type MOSFET Q6, and the control terminal of the fourth N-type MOSFET Q12, respectively. The first terminal of the third N-type MOSFET Q6 is connected to one output terminal of the drive controller 100, and the second terminal of the third N-type MOSFET Q6 is connected to one receiving terminal of the water injection direction change signal output terminal. The first terminal of the fourth N-type MOSFET Q12 is connected to two output terminals of the drive controller 100, and the second terminal of the fourth N-type MOSFET Q12 is connected to two receiving terminals of the water injection direction change signal output terminal. On one hand, the third N-type MOSFET Q6 is used to connect to the power supply section of the water injection direction movement signal output terminal P2, so that the output voltage signal passes through the MOSFET to power the water injection direction movement signal output terminal P2. On the other hand, the fourth N-type MOSFET Q12 is used to connect to the data terminal of the water injection direction movement signal output terminal P2, so that after the data signal is turned on by the fourth N-type MOSFET Q12, data transmission occurs between the water injection direction movement signal output terminal P2 and the drive controller 100. In this embodiment, the control terminal of the third N-type MOSFET Q6 is the gate, the first terminal is the drain, and the second terminal is the source; the control terminal of the fourth N-type MOSFET Q12 is the gate, the first terminal is the drain, and the second terminal is the source.

[0037] like Figure 4As shown in the figure, in one embodiment, the third field effect tube M3 includes a fifth N-type MOS tube Q5 and a sixth N-type MOS tube Q11, the second end of the third triode Q7 is connected to the first end of the third resistor R11, the control end of the fifth N-type MOS tube Q5 and the control end of the sixth N-type MOS tube Q11 respectively, the first end of the fifth N-type MOS tube Q5 is connected to the output end of the driving controller 100, and the second end of the fifth N-type MOS tube Q5 is connected to the receiving end of the coffee grinding signal output terminal P3; the first end of the fourth N-type MOS tube Q12 is connected to the output end of the driving controller 100, and the second end of the fourth N-type MOS tube Q12 is connected to the receiving end of the coffee grinding signal output terminal P3. On the one hand, the fifth N-type MOS tube Q5 is used to supply power to the coffee grinding signal output terminal P3, so that the voltage signal output after passing through the MOS tube supplies power to the coffee grinding signal output terminal P3, and on the other hand, the sixth N-type MOS tube Q11 is used to connect the data end of the coffee grinding signal output terminal P3, so that after the sixth N-type MOS tube Q11 is turned on, the coffee grinding signal output terminal P3 and the driving controller 100 transmit data. In this embodiment, the control end of the fifth N-type MOS tube Q5 is the gate, the first end is the drain, and the second end is the source; the control end of the sixth N-type MOS tube Q11 is the gate, the first end is the drain, and the second end is the source.

[0038] As shown in the figure, Figure 2 In one embodiment, the brewing switch circuit 200 further includes a fourth resistor R20, the first end of the fourth resistor R20 is connected to the control end of the first triode Q3, and the second end of the fourth resistor R20 is connected to the second end of the first resistor R5. It can be understood that when the brewing button is clicked, the fourth resistor R20 generates a voltage drop, so that the voltage of the first triode Q3 reaches the conduction condition, thereby facilitating the opening of the first field effect tube M1, and thus enabling the driving controller 100 to normally output corresponding signals to perform the operation of grinding coffee powder.

[0039] As shown in the figure, Figure 3 In one embodiment, the water injection direction moving switch circuit 300 further includes a fifth resistor R21, the first end of the fifth resistor R21 is connected to the control end of the second triode Q9, and the second end of the fifth resistor R21 is connected to the second end of the second resistor R10. It can be understood that when the water injection direction moving button is clicked, the fifth resistor R21 generates a voltage drop, so that the voltage of the second triode Q9 reaches the conduction condition, thereby facilitating the opening of the second field effect tube M2, and thus enabling the driving controller 100 to normally output corresponding signals to perform the operation of moving the water injection X-Y axis.

[0040] As shown in the figure, Figure 4As shown, in one embodiment, the coffee grinding switch circuit 400 further includes a sixth resistor R22. The first end of the sixth resistor R22 is connected to the control terminal of the third transistor Q7, and the second end of the sixth resistor R22 is connected to the second end of the third resistor R11. It can be understood that when the grinding button is pressed, the sixth resistor R22 generates a voltage drop, facilitating the voltage of the third transistor Q7 to reach the conduction condition, thereby facilitating the activation of the third field-effect transistor M3, and enabling the drive controller 100 to output the corresponding signal to perform the coffee bean grinding operation.

[0041] like Figure 1 As shown, in one embodiment, the single-motor control circuit 10 further includes a seventh resistor R2. The signal input terminal of the drive controller 100 is used to receive an external enable signal. The first end of the seventh resistor R2 is connected to the signal input terminal of the drive controller 100, and the second end of the seventh resistor R2 is grounded. It can be understood that when the coffee machine is powered on, if a user clicks a button to start the drive controller 100, an enable signal is output to the drive controller 100 to start. The setting of the seventh resistor R2 can limit the voltage of the input signal, preventing overvoltage damage to the drive controller 100. Grounding the second end of the seventh resistor R2 can prevent the input signal from being directly pulled to ground, causing the signal to become floating.

[0042] like Figure 1 As shown, in one embodiment, the single motor control circuit 10 further includes an eighth resistor R1. The first end of the eighth resistor R1 is connected to the voltage compensation terminal of the drive controller 100, and the second end of the eighth resistor R1 is grounded. It can be understood that when the coffee machine uses a long cable, since the impedance of the cable is related to the length of the cable, there is a significant voltage drop in the cable when a large current is output after the plug is connected. As a result, the operating voltage of the coffee machine is lower than the normal value. The voltage compensation terminal Sense of the drive controller 100 can perform voltage compensation, and the grounding of the eighth resistor R1 can compensate for the actual operating voltage and limit overcurrent, thereby significantly improving the input voltage at the load end and ensuring that the load works normally.

[0043] like Figure 1As shown, in one of the embodiments, the single motor control circuit 10 further comprises a filter capacitor group 500, the upper half of the filter capacitor group 500 is connected to the power supply end of the drive controller 100, and the lower half of the filter capacitor group 500 is connected to the ground. When the power supply is connected, the power supply signal will be filtered by the filter capacitor group 500 to prevent the input signal from being disturbed or the voltage from being suddenly changed, thereby ensuring the normal operation of the coffee machine. In this embodiment, the filter capacitor group 500 comprises a first filter capacitor C13 and a second filter capacitor C14, the upper half of the first filter capacitor C13 is connected to the power supply end of the drive controller 100 and the upper half of the second filter capacitor C14, the lower half of the first filter capacitor C13 is connected to the lower half of the second filter capacitor C14, and the lower half of the second filter capacitor C14 is connected to the ground. Thus, the first filter capacitor C13 and the second filter capacitor C14 together filter the interference signal in the input voltage.

[0044] In this embodiment, the first filter capacitor C13 is a high-frequency filter capacitor; and / or, the second filter capacitor C14 is a low-frequency filter capacitor. In this way, the first filter capacitor C13 has a small capacity and can filter high-frequency signals; the second filter capacitor C14 has a large capacity and can filter low-frequency signals.

[0045] The present disclosure also provides a coffee machine comprising the single motor control circuit 10 according to any one of the above embodiments.

[0046] Compared with the prior art, the present disclosure has at least the following advantages:

[0047] In the case where the coffee machine adopts the single motor control circuit 10, when the brewing button is clicked, the control end of the first triode Q3 receives a signal to turn on, thereby turning on the first field effect tube M1, and the brewing enable signal will be output in turn through the first triode Q3 and the first field effect tube M1 to perform the coffee powder brewing operation; when the water injection direction moving button is clicked, the control end of the second triode Q9 receives a signal to turn on, thereby turning on the second field effect tube M2, and the water injection direction moving enable signal will be output in turn through the second triode Q9 and the second field effect tube M2 to perform the water injection direction moving operation; when the coffee bean grinding button is clicked, the control end of the third triode Q7 receives a signal to turn on, thereby turning on the third field effect tube M3, and the coffee bean grinding enable signal will be output in turn through the third triode Q7 and the third field effect tube M3 to perform the coffee bean grinding operation. The above operations are realized without adding an additional independent motor, and only the state of the above functions needs to be controlled by the drive controller 100, thereby reducing the complexity of the structure and circuit of the coffee machine, and further reducing the manufacturing cost of the coffee machine.

[0048] The above-described embodiments are merely illustrative of several embodiments of the present disclosure, which are described in a more specific and detailed manner, but should not be construed as limiting the scope of the patent disclosure. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure should be subject to the appended claims.

Claims

1. A single motor control circuit for controlling the states of grinding, brewing, and changing the direction of water injection, characterized in that, The single motor control circuit comprises a driving controller, a brewing switch circuit, a water injection direction moving switch circuit, a bean grinding switch circuit, a filter capacitor group, a seventh resistor, an eighth resistor and a ninth resistor. The driving controller is used for receiving a reference voltage. The brewing switch circuit comprises a first triode, a first resistor and a first field effect transistor. The first end of the first triode is used for receiving a direct current voltage. The second end of the first triode is respectively connected to the control end of the first field effect transistor and the first end of the first resistor.

2. The single-motor control circuit of claim 1, wherein, The control end of the first triode is used for receiving a brewing signal enable button.

3. The single-motor control circuit of claim 1, wherein, The first end of the first field effect transistor is connected to the output end of the driving controller.

4. The single-motor control circuit of claim 1, wherein, The second end of the first field effect transistor is used for receiving a brewing signal output terminal.

5. The single-motor control circuit of claim 1, wherein, The second end of the first resistor is grounded.

6. The single-motor control circuit of claim 1, wherein, The water injection direction moving switch circuit comprises a second triode, a second resistor and a second field effect transistor.

7. The single-motor control circuit of claim 1, wherein, The first end of the second triode is used for receiving a direct current voltage. The second end of the second triode is respectively connected to the control end of the second field effect transistor and the first end of the second resistor. The control end of the second triode is used for receiving a water injection direction moving signal enable button. The first end of the second field effect transistor is connected to the output end of the driving controller. The second end of the second field effect transistor is used for receiving a water injection direction moving signal output terminal. The second end of the second resistor is grounded. The bean grinding switch circuit comprises a third triode, a third resistor and a third field effect transistor. The first end of the third triode is used for receiving a direct current voltage. The second end of the third triode is respectively connected to the control end of the third field effect transistor and the first end of the third resistor. The control end of the third triode is used for receiving a bean grinding signal enable button. The first end of the third field effect transistor is connected to the output end of the driving controller. The second end of the third field effect transistor is used for receiving a bean grinding signal output terminal. The second end of the third resistor is grounded. The single motor control circuit further comprises a seventh resistor. The signal input end of the driving controller is used for receiving an external enable signal. The first end of the seventh resistor is connected to the signal input end of the driving controller. The second end of the seventh resistor is grounded. The single motor control circuit further comprises an eighth resistor. The first end of the eighth resistor is connected to the voltage compensation end of the driving controller. The second end of the eighth resistor is grounded. The single motor control circuit further comprises a filter capacitor group. The upper half end of the filter capacitor group is connected to the power supply end of the driving controller. The lower half end of the filter capacitor group is grounded. The single motor control circuit further comprises a ninth resistor. The first end of the ninth resistor is connected to the signal input end of the driving controller. The second end of the ninth resistor is connected to the voltage compensation end of the driving controller. The single motor control circuit further comprises a tenth resistor. The first end of the tenth resistor is connected to the signal input end of the driving controller. The second end of the tenth resistor is connected to the voltage compensation end of the driving controller.

8. The single-motor control circuit of claim 7, wherein, The filter capacitor set comprises a first filter capacitor and a second filter capacitor, upper halves of the first filter capacitor are respectively connected to a power supply end of the drive controller and an upper half of the second filter capacitor, a lower half of the first filter capacitor is connected to a lower half of the second filter capacitor, and the lower half of the second filter capacitor is grounded.

9. The single-motor control circuit of claim 8, wherein, The first filter capacitor is a high-frequency filter capacitor; and / or, The second filter capacitor is a low-frequency filter capacitor.

10. A coffee maker characterized in that, The single-motor control circuit comprises the single-motor control circuit according to any one of claims 1-9.

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