Odor-free and drip-free coffee machine structure and circuit structure thereof

Abstract

The utility model relates to a coffee machine structure free of peculiar smell and dripping water and a circuit structure thereof. The coffee machine structure comprises a shell, a water tank, a water pump, an MCU, an electric heating piece, a hydraulic cavity assembly, a temperature sensor, a brewing cup assembly, a first capacitor, a water pump circuit, a temperature sensing circuit, a power supply circuit, a power adjusting circuit and a heating circuit. The coffee machine has the advantages of no peculiar smell, no water drop, compact structure, convenience in use and the like after being used.

Description

Technical Field

[0001] The utility model relates to a coffee machine structure without peculiar smell and dripping and a circuit structure thereof. Background Art

[0002] At present, the traditional method is to use a back pressure valve and a duckbill valve to double protect the water circuit. The back pressure valve is made of silicone and will produce odor if it is immersed in water for a long time and is often heated. After the coffee machine is finished working, there is water in the brewing cup assembly, which will cause dripping. Summary of the invention

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a coffee machine structure without peculiar smell and dripping water and a circuit structure thereof. The coffee machine has no peculiar smell and dripping water after use, has a compact structure and is easy to use.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the first technical solution of the utility model is realized as follows: it is a coffee machine structure without peculiar smell and dripping, characterized in that it includes:

[0005] A housing and a water tank; the water tank is mounted on the housing;

[0006] A water pump, an MCU and an electric heating element; the water pump, the MCU and the electric heating element are located in a housing, the water tank is connected to the inlet of the water pump, the outlet of the water pump is connected to the inlet of the electric heating element, and the MCU is electrically connected to the water pump and the electric heating element respectively;

[0007] Hydraulic chamber assembly; the hydraulic chamber assembly includes a fixing seat, a water inlet joint, a duckbill valve, a sealing ring, a bayonet and a fixing member, a first water inlet channel is provided on the fixing seat, a second water inlet channel is provided on the fixing member, the inlet of the water inlet joint is communicated with the water outlet of the electric heating member, the fixing member is installed on the fixing seat, the outlet of the water inlet joint, the first water inlet channel and the second water inlet channel are communicated in sequence, the duckbill valve is installed on the fixing member and is located at the water outlet of the second water inlet channel so that water flows out through the duckbill valve, and the water outlet of the duckbill valve is located at the lower part of the fixing member, the bayonet is installed at the lower part of the fixing member and is located next to the water outlet of the duckbill valve, the sealing ring is installed at the lower part of the fixing member and the bayonet and the water outlet of the duckbill valve are located in the circle of the sealing ring;

[0008] A temperature sensor; the temperature sensor is installed at the water outlet of the electric heating element or in a pipe connecting the electric heating element and the water inlet joint; and

[0009] Brewing cup assembly; the brewing cup assembly is located at the lower part of the fixing member, the sealing ring can cover the brewing cup assembly and the duckbill valve water outlet can be communicated with the brewing cup assembly so that water enters the brewing cup assembly.

[0010] The technical solution also includes a flow meter, which is installed on the pipeline between the water tank and the water pump.

[0011] In the present technical solution, a pressure relief protector is also included, which has a water inlet and two water outlets. The water inlet of the pressure relief protector is connected to the water outlet of the water pump, one water outlet of the pressure relief protector is connected to the inlet of the electric heating element, and the other water outlet of the pressure relief protector is connected to the water tank.

[0012] In the technical solution, a pressing block is also included; the duckbill valve is installed on the lower part of the fixing member through the pressing block.

[0013] In order to achieve the above-mentioned purpose, the technical solution of the second technical solution of the utility model is implemented as follows: it is a circuit structure of a coffee machine structure without odor and dripping, characterized in that it includes MCU13 and a first capacitor; 20 pins are provided on the MCU, 1 pin of the MCU is grounded, and 1 pin of the MCU is also electrically connected to one end of the first capacitor C1, the other end of the first capacitor is electrically connected to 20 pins of the MCU, and 20 pins of the MCU are also electrically connected to +5V;

[0014] A water pump circuit; the water pump circuit includes a water pump, a second X capacitor, a sixth resistor, an eleventh resistor, a twelfth resistor and a third thyristor, the live wire is electrically connected to one end of the eleventh resistor, one end of the sixth resistor and the cathode of the third thyristor respectively, the two ends of the second capacitor are electrically connected to the other end of the sixth resistor and the input end of the water pump respectively, the anode of the third thyristor is electrically connected to the live wire interface of the water pump, the control end of the third thyristor and the other end of the eleventh resistor are electrically connected to one end of the twelfth resistor respectively, and the other end of the twelfth resistor is electrically connected to pin 10 of the MCU;

[0015] Temperature sensing circuit; the temperature sensing circuit includes a temperature sensing interface, a fourth relay, a fifth relay, a sixth relay, a seventeenth resistor, an eighteenth resistor and a seventh capacitor, one end of the fourth relay and the fifth relay after being connected in parallel is electrically connected to +5V, the other end of the fourth relay and the fifth relay after being connected in parallel is respectively electrically connected to +5V and one end of the temperature sensing interface, the other end of the temperature sensing interface is electrically connected to one end of the sixth relay, the other end of the sixth relay is respectively electrically connected to one end of the seventeenth resistor and one end of the eighteenth resistor, the other end of the seventeenth resistor is respectively electrically connected to pin 6 of the MCU and one end of the seventh capacitor, and the other end of the eighteenth resistor and the other end of the seventh capacitor are grounded.

[0016] A power supply circuit, a power regulation circuit and a heating circuit; the input end of the power supply circuit is electrically connected to the live wire and the neutral wire respectively, the output end of the power supply circuit is electrically connected to the 17th pin of the MCU, the heating circuit and the neutral wire interface of the water pump respectively, the power regulation circuit is electrically connected to the 9th pin of the MCU, and the heating circuit is electrically connected to the 4th pin of the MCU.

[0017] In the technical solution, the power supply circuit includes a first resistor, a second resistor, a first X capacitor, a first variable resistor, a third resistor, a fourth resistor, a first electrolytic capacitor, a second electrolytic capacitor, a third electrolytic capacitor, a first diode, a second diode, a first inductor, a second inductor, a second capacitor, a third capacitor, a thirteenth resistor, a fourteenth resistor, a twenty-fifth resistor, a twenty-sixth resistor, a twenty-seventh resistor, an eleventh capacitor, a first control board, and a first triode; the first control board has 8 pins, and pin 1 of the first control board is respectively connected to the live wire, the first One end of a resistor, one end of a first X capacitor, one end of a first variable resistor, a positive electrode of a first electrolytic capacitor, a negative electrode of a second electrolytic capacitor, a negative electrode of a third electrolytic capacitor, one end of a second inductor, one end of a third resistor, one end of a second capacitor and +5V are electrically connected, pin 2 of the first control board is electrically connected to the negative electrode of the first electrolytic capacitor, the other end of the third resistor and the other end of the second capacitor and is grounded, pin 4 of the first control board is electrically connected to the positive electrode of the second electrolytic capacitor and one end of the first inductor, and pin 5 of the first control board is electrically connected to one end of the third capacitor. The first control board is electrically connected to the other end of the second inductor coil, the 6th pin of the first control board is electrically connected to one end of the third capacitor and the other end of the second inductor coil, the 8th pin of the first control board is electrically connected to the other end of the third capacitor, the neutral line is electrically connected to the other end of the second resistor, the heating circuit, the neutral line interface of the water pump, the other end of the first X capacitor, the other end of the first variable resistor and one end of the fourth resistor, the other end of the fourth resistor, the positive electrode of the first diode and the second diode are connected in series in sequence, the negative electrode of the second diode is electrically connected to the positive electrode of the third electrolytic capacitor and the other end of the first inductor coil, the negative electrode of the first diode is connected in series with the twenty-fifth resistor and one end of the twenty-sixth resistor in sequence, the other end of the twenty-sixth resistor is electrically connected to one end of the fourteenth resistor and the base of the first transistor, the collector of the first transistor is electrically connected to one end of the thirteenth resistor and one end of the twenty-seventh resistor, the other end of the twenty-seventh resistor is connected to +5V, the other end of the thirteenth resistor is electrically connected to the 17th pin of the MCU and one end of the eleventh capacitor, the other end of the eleventh capacitor, the emitter of the first transistor and the other end of the fourteenth resistor are grounded.

[0018] In the present technical solution, the heating circuit includes an electric heating element, a first thyristor, a seventh resistor, an eighth resistor, a ninth resistor, a twenty-ninth resistor and a second triode; the neutral line interface of the electric heating element is electrically connected to the neutral line, the live line interface of the electric heating element is electrically connected to the anode of the first thyristor, the cathode of the first thyristor is electrically connected to the live line, the control end of the first thyristor is electrically connected to one end of the ninth resistor and one end of the twenty-ninth resistor, respectively, the other end of the ninth resistor and the other end of the twenty-ninth resistor are electrically connected to the collector of the second triode, the base of the second triode is electrically connected to one end of the seventh resistor and one end of the eighth resistor, respectively, the emitter of the second triode is grounded, the other end of the seventh resistor is electrically connected to four pins of the MCU, and the other end of the eighth resistor is grounded.

[0019] In the present technical solution, it also includes a power regulation circuit, which includes a regulation interface, a nineteenth resistor, a twentieth resistor, a first relay, a second relay, and a third relay. One end of the first relay, the second relay, and the third relay after being connected in parallel is grounded, and the other end of the first relay, the second relay, and the third relay after being connected in parallel is electrically connected to one end of the regulation interface and grounded. The other end of the regulation interface is respectively electrically connected to one end of the nineteenth resistor and one end of the twentieth resistor, the other end of the nineteenth resistor is electrically connected to pin 9 of the MCU, and the other end of the twentieth resistor is connected to +5V.

[0020] In the technical solution, a pressure relief valve circuit is also included, which includes a pressure relief valve, a third X capacitor, a fifth resistor, a tenth resistor, a twenty-eighth resistor, and a second thyristor. The neutral line port of the pressure relief valve is electrically connected to the neutral line, the live line port of the pressure relief valve is electrically connected to the anode of the second thyristor and one end of the third X capacitor, respectively, the neutral line is electrically connected to one end of the fifth resistor, one end of the tenth resistor, and the cathode of the second thyristor, respectively, the control end of the second thyristor and the other end of the tenth resistor are electrically connected to one end of the twenty-eighth resistor, respectively, the other end of the twenty-eighth resistor is electrically connected to pin 5 of the MCU, and the other end of the fifth resistor is electrically connected to the other end of the third X capacitor.

[0021] In the present technical solution, it also includes an LED circuit, which includes an LED circuit interface, a fifth transistor, a fifteenth resistor and a sixteenth resistor. Pin 1 of the LED circuit interface is electrically connected to the collector of the fifth transistor, the base of the fifth transistor is electrically connected to one end of the fifteenth resistor and one end of the sixteenth resistor respectively, the emitter of the fifth transistor and the other end of the fifteenth resistor are electrically connected to +5V, the other end of the sixteenth resistor is electrically connected to pin 19 of the MCU, pin 2 of the LED circuit interface is electrically connected to pin 18 of the MCU, and the other pins of the LED circuit interface are electrically connected to the LED.

[0022] In the present technical solution, a burning circuit is also included, which includes a burning circuit. Pin 1 of the burning interface is electrically connected to +5V, pin 2 of the burning interface is grounded, pin 3 of the burning interface is electrically connected to pin 7 of the MCU, and pin 4 of the burning interface is electrically connected to pin 8 of the MCU.

[0023] In the present technical solution, a buzzer circuit is also included, which includes a buzzer and a 30th resistor. One end of the buzzer is electrically connected to one end of the 30th resistor, the other end of the buzzer is electrically connected to pin 3 of the MCU, and the other end of the 30th resistor is electrically connected to +5V.

[0024] In the present technical solution, a water quantity circuit is also included, which includes a water quantity circuit including a water meter interface, a twenty-second resistor, a twenty-third resistor, and a tenth capacitor. Pin 1 of the water meter interface is electrically connected to one end of the twenty-second resistor and one end of the twenty-third resistor, respectively. Pin 2 of the water meter interface is electrically connected to one end of the tenth capacitor and is grounded. Pin 3 of the water meter interface is electrically connected to the other end of the twenty-second resistor and +5V, respectively. The other end of the tenth capacitor and the other end of the twenty-third resistor are electrically connected to pin 2 of the MCU.

[0025] Compared with the prior art, the utility model has the advantages that the coffee machine has no odor or dripping after use, has a compact structure, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the utility model;

[0027] Figure 2 It is a side view of the utility model;

[0028] Figure 3 yes Figure 3 AA section view;

[0029] Figure 4 yes Figure 3 Circuit diagram;

[0030] Figure 5 This is the waterway principle diagram of the utility model;

[0031] Figure 6 It is a circuit diagram of the MCU of the utility model;

[0032] Figure 7 It is a power supply circuit diagram of the utility model;

[0033] Figure 8 It is a power regulation circuit diagram of the utility model;

[0034] Fig. 9 It is the circuit diagram of the LED of the utility model;

[0035] Fig.10 It is a circuit diagram of the pressure relief valve of the utility model;

[0036] Fig.11 It is the circuit diagram of the utility model water pump;

[0037] Fig.12 It is the circuit diagram of the thermometer of the utility model;

[0038] Fig.13 This is the circuit diagram of the burning pin of the utility model;

[0039] Fig.14 It is a circuit diagram of the heating of the utility model;

[0040] Fig.15 It is the circuit diagram of the buzzer of the utility model;

[0041] Fig.16 The utility model is a circuit diagram of a water meter. DETAILED DESCRIPTION

[0042] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various implementation methods of the present invention described below can be combined with each other as long as they do not conflict with each other. Example

[0043] like Figures 1 to 5 As shown, it is a coffee machine structure without odor and dripping, including:

[0044] A housing 1 and a water tank 2; the water tank 2 is mounted on the housing 1;

[0045] A water pump 11, an MCU 13 and an electric heater 14; the water pump 11, the MCU 13 and the electric heater 14 are located in the housing 1, the water tank 2 is connected to the inlet of the water pump 11, the outlet of the water pump 11 is connected to the inlet of the electric heater 14, and the MCU 13 is electrically connected to the water pump 11 and the electric heater 14 respectively;

[0046] Hydraulic chamber assembly; the hydraulic chamber assembly includes a fixing seat 3, a water inlet joint 4, a duckbill valve 5, a sealing ring 7, a bayonet 8 and a fixing member 9, a first water inlet channel 31 is provided on the fixing seat 3, a second water inlet channel 91 is provided on the fixing member 9, the inlet of the water inlet joint 4 is connected with the outlet of the electric heating member 14, the fixing member 9 is installed on the fixing seat 3, the outlet of the water inlet joint 4, the first water inlet channel 31 and the second water inlet channel 91 are connected in sequence, the duckbill valve 5 is installed on the fixing member 9 and is located at the outlet of the second water inlet channel 91 so that water flows out through the duckbill valve 5, and the outlet of the duckbill valve 5 is located at the lower part of the fixing member 9, the bayonet 8 is installed at the lower part of the fixing member 9 and is located next to the outlet of the duckbill valve 5, the sealing ring 7 is installed at the lower part of the fixing member 9, and the bayonet 8 and the outlet of the duckbill valve 5 are located in the circle of the sealing ring 7;

[0047] The temperature sensor 16 is installed at the water outlet of the electric heating element 14 or in the pipeline connecting the electric heating element 14 and the water inlet connector 4; and

[0048] brewing cup assembly; the brewing cup assembly is located at the lower part of the fixing member 9, the sealing ring 7 can be covered on the brewing cup assembly and the water outlet of the duckbill valve 5 can be communicated with the brewing cup assembly so that water enters the brewing cup assembly.

[0049] The back pressure valve is cancelled, so that the back pressure valve will not generate odor due to long-term immersion in water and heat. After cancellation, the root source of the odor is eliminated, and water directly reaches the coffee brewing cup through the hydraulic chamber.

[0050] When working, step one

[0051] When the coffee machine finishes working, the MCU 13 drives the water pump 11 to stop working first, and the MCU 13 drives the electric heater 14 to heat up so that the temperature of the electric heater 14 is between 90-120°;

[0052] Step 2

[0053] The MCU detects the water temperature at the water outlet of the electric heating element 14 through the temperature sensor 16. When the temperature of the water outlet of the electric heating element 14 reaches the preset temperature, the MCU 13 drives the water pump 11 to work, and the water enters the electric heating element 14 to form water vapor. The water vapor enters the brewing cup assembly 15 through the water hydraulic chamber assembly, thereby drying the accumulated water in the brewing cup assembly 15.

[0054] In this embodiment, a flow meter 10 is further included, and the flow meter 10 is installed on the pipeline between the water tank 2 and the water pump 11 .

[0055] In this embodiment, a pressure relief protector 12 is also included, and the pressure relief protector 12 has a water inlet and two water outlets. The water inlet of the pressure relief protector 12 is connected to the water outlet of the water pump 11, one water outlet of the pressure relief protector 12 is connected to the inlet of the electric heating element 14, and the other water outlet of the pressure relief protector 12 is connected to the water tank 2.

[0056] In this embodiment, a pressing block 6 is further included; the duckbill valve 5 is installed at the lower part of the fixing member 9 through the pressing block 6 . Example

[0057] like Figures 6 to 16 As shown, it is a circuit structure of a coffee machine structure without odor and dripping, including:

[0058] MCU13 and first capacitor C1; 20 pins are provided on the MCU13, pin 1 of the MCU13 is grounded, and pin 1 of the MCU13 is also electrically connected to one end of the first capacitor C1, the other end of the first capacitor C1 is electrically connected to pin 20 of the MCU13, and pin 20 of the MCU13 is also electrically connected to +5V;

[0059] A water pump circuit; the water pump circuit includes a water pump 11, a second X capacitor CX2, a sixth resistor R6, an eleventh resistor R11, a twelfth resistor R12 and a third thyristor TR3, the live wire is electrically connected to one end of the eleventh resistor R11, one end of the sixth resistor R6 and the cathode of the third thyristor TR3, the two ends of the second capacitor C2 are electrically connected to the other end of the sixth resistor R6 and the live wire interface of the water pump 11, the anode of the third thyristor TR3 is electrically connected to the live wire interface of the water pump 11, the control end of the third thyristor TR3 and the other end of the eleventh resistor R11 are electrically connected to one end of the twelfth resistor R12, and the other end of the twelfth resistor R12 is electrically connected to pin 10 of the MCU13;

[0060] Temperature sensing circuit; the temperature sensing circuit includes a temperature sensing interface CN3, a fourth relay JR4, a fifth relay JR5, a sixth relay JR6, a seventeenth resistor R17, an eighteenth resistor R18 and a seventh capacitor C7, one end of the fourth relay JR4 and the fifth relay JR5 connected in parallel is electrically connected to +5V, the other end of the fourth relay JR4 and the fifth relay JR5 connected in parallel is respectively electrically connected to +5V and one end of the temperature sensing interface CN3, the other end of the temperature sensing interface CN3 is electrically connected to one end of the sixth relay JR6, the other end of the sixth relay JR6 is respectively electrically connected to one end of the seventeenth resistor R17 and one end of the eighteenth resistor R18, the other end of the seventeenth resistor R17 is respectively electrically connected to pin 6 of MCU13 and one end of the seventh capacitor C7, the other end of the eighteenth resistor R18 and the other end of the seventh capacitor C7 are grounded.

[0061] A power supply circuit, a power regulation circuit and a heating circuit; the input end of the power supply circuit is electrically connected to the live wire and the neutral wire respectively, the output end of the power supply circuit is electrically connected to the 17th pin of the MCU13, the heating circuit, and the neutral wire interface of the water pump 11 respectively, the power regulation circuit is electrically connected to the 9th pin of the MCU13, and the heating circuit is electrically connected to the 4th pin of the MCU13.

[0062] When working;

[0063] Step 1

[0064] When the coffee machine finishes working, the MCU13 drives the water pump 11 to stop working first, and the MCU13 drives the heating circuit to increase the temperature so that the temperature of the heating body in the heating circuit is between 90°C and 120°C;

[0065] Step 2

[0066] When the water temperature at the heating body reaches the preset temperature, MCU13 drives the water pump 11 to work, and water enters the heating body to form water vapor, and the water vapor enters the brewing cup assembly of the coffee machine through the water hydraulic chamber assembly to dry the accumulated water in the brewing cup assembly.

[0067] In this embodiment, the power supply circuit includes a first resistor R1, a second resistor R2, a first X capacitor CX1, a first variable resistor RV1, a third resistor R3, a fourth resistor R4, a first electrolytic capacitor EC1, a second electrolytic capacitor EC2, a third electrolytic capacitor EC3, a first diode D1, a second diode D2, a first inductor L1, a second inductor L2, a second capacitor C2, a third capacitor C3, a thirteenth resistor R13, a fourteenth resistor R14, a twenty-fifth resistor R25, a twenty-sixth resistor R26, a twenty-seventh resistor R27, an eleventh capacitor C11, a first control board U1, and a first transistor Q1; the first control board U1 has 8 pins, the first Pin 1 of the control board U1 is respectively electrically connected to the live wire, one end of the first resistor R1, one end of the first X capacitor CX1, one end of the first variable resistor RV1, the positive electrode of the first electrolytic capacitor EC1, the negative electrode of the second electrolytic capacitor EC2, the negative electrode of the third electrolytic capacitor EC3, one end of the second inductor L2, one end of the third resistor R3, one end of the second capacitor C2 and +5V, pin 2 of the first control board U1 is respectively electrically connected to the negative electrode of the first electrolytic capacitor EC1, the other end of the third resistor R3 and the other end of the second capacitor C2 and grounded, pin 4 of the first control board U1 is respectively electrically connected to the positive electrode of the second electrolytic capacitor EC2 and one end of the first inductor L1, and pin 5 of the first control board U1 is respectively electrically connected to the positive electrode of the second electrolytic capacitor EC2 and one end of the first inductor L1. The pins are electrically connected to one end of the third capacitor C3 and the other end of the second inductor L2, respectively. The 6 pins of the first control board U1 are electrically connected to one end of the third capacitor C3 and the other end of the second inductor L2, respectively. The 8 pins of the first control board U1 are electrically connected to the other end of the third capacitor C3. The neutral line is electrically connected to the other end of the second resistor R2, the heating circuit, the neutral line interface of the water pump 11, the other end of the first X capacitor CX1, the other end of the first variable resistor RV1 and one end of the fourth resistor R4, respectively. The other end of the fourth resistor R4, the positive electrode of the first diode D1 and the second diode D2 are connected in series in sequence. The negative electrode of the second diode D2 is connected to the positive electrode of the third electrolytic capacitor EC3 and the first inductor L2, respectively. The other end of L1 is electrically connected, the cathode of the first diode D1 is connected in series with the twenty-fifth resistor R25 and one end of the twenty-sixth resistor R26 in sequence, the other end of the twenty-sixth resistor R26 is electrically connected with one end of the fourteenth resistor R14 and the base of the first transistor Q1, the collector of the first transistor Q1 is electrically connected with one end of the thirteenth resistor R13 and one end of the twenty-seventh resistor R27, the other end of the twenty-seventh resistor R27 is connected to +5V, the other end of the thirteenth resistor R13 is electrically connected with pin 17 of MCU13 and one end of the eleventh capacitor C11, the other end of the eleventh capacitor C11, the emitter of the first transistor Q1 and the other end of the fourteenth resistor R14 are grounded.

[0068] In this embodiment, the heating circuit includes an electric heating element 14, a first thyristor TR1, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a twenty-ninth resistor R29 and a second triode Q2; the neutral line interface of the electric heating element 14 is electrically connected to the neutral line, the live line interface of the electric heating element 14 is electrically connected to the anode of the first thyristor TR1, the cathode of the first thyristor TR1 is electrically connected to the live line, the control end of the first thyristor TR1 is electrically connected to one end of the ninth resistor R9 and one end of the twenty-ninth resistor R29, respectively, the other end of the ninth resistor R9 and the other end of the twenty-ninth resistor R29 are electrically connected to the collector of the second triode Q2, the base of the second triode Q2 is electrically connected to one end of the seventh resistor R7 and one end of the eighth resistor R8, respectively, the emitter of the second triode Q2 is grounded, the other end of the seventh resistor R7 is electrically connected to the four pins of the MCU13, and the other end of the eighth resistor R8 is grounded.

[0069] In this embodiment, it also includes a regulating power circuit, which includes a regulating interface CN1, a nineteenth resistor R19, a twentieth resistor R20, a first relay JR1, a second relay JR2, and a third relay JR3. One end of the first relay JR1, the second relay JR2, and the third relay JR3 connected in parallel is grounded, and the other end of the first relay JR1, the second relay JR2, and the third relay JR3 connected in parallel is electrically connected to one end of the regulating interface CN1 and grounded, and the other end of the regulating interface CN1 is electrically connected to one end of the nineteenth resistor R19 and one end of the twentieth resistor R20 respectively, the other end of the nineteenth resistor R19 is electrically connected to pin 9 of MCU13, and the other end of the twentieth resistor R20 is connected to +5V.

[0070] In the present embodiment, a pressure relief valve circuit is further included, which includes a pressure relief valve, a third X capacitor CX3, a fifth resistor R5, a tenth resistor R10, a twenty-eighth resistor R28, and a second thyristor TR2. The neutral line port of the pressure relief valve is electrically connected to the neutral line, the live line port of the pressure relief valve is electrically connected to the anode of the second thyristor TR2 and one end of the third X capacitor CX3, respectively, the neutral line is electrically connected to one end of the fifth resistor R5, one end of the tenth resistor R10, and the cathode of the second thyristor TR2, respectively, the control end of the second thyristor TR2 and the other end of the tenth resistor R10 are electrically connected to one end of the twenty-eighth resistor R28, respectively, the other end of the twenty-eighth resistor R28 is electrically connected to pin 5 of the MCU13, and the other end of the fifth resistor R5 is electrically connected to the other end of the third X capacitor CX3.

[0071] In this embodiment, an LED circuit is also included, which includes an LED circuit interface CN6, a fifth transistor Q5, a fifteenth resistor R15 and a sixteenth resistor R16. Pin 1 of the LED circuit interface CN6 is electrically connected to the collector of the fifth transistor Q5, the base of the fifth transistor Q5 is electrically connected to one end of the fifteenth resistor R15 and one end of the sixteenth resistor R16 respectively, the emitter of the fifth transistor Q5 and the other end of the fifteenth resistor R15 are electrically connected to +5V, the other end of the sixteenth resistor R16 is electrically connected to pin 19 of MCU13, pin 2 of the LED circuit interface CN6 is electrically connected to pin 18 of MCU13, and the other pins of the LED circuit interface CN6 are electrically connected to the LED.

[0072] In this embodiment, a burning circuit is also included, which includes a burning interface CN4, wherein pin 1 of the burning interface CN4 is electrically connected to +5V, pin 2 of the burning interface CN4 is grounded, pin 3 of the burning interface CN4 is electrically connected to pin 7 of the MCU13, and pin 4 of the burning interface CN4 is electrically connected to pin 8 of the MCU13.

[0073] In this embodiment, a buzzer circuit is also included, which includes a buzzer BUZ and a 30th resistor R30. One end of the buzzer BUZ is electrically connected to one end of the 30th resistor R30, the other end of the buzzer BUZ is electrically connected to pin 3 of MCU13, and the other end of the 30th resistor R30 is electrically connected to +5V.

[0074] In this embodiment, a water volume circuit is also included, which includes a water volume meter interface CN5, a twenty-second resistor R22, a twenty-third resistor R23, and a tenth capacitor C10. Pin 1 of the water volume meter interface CN5 is electrically connected to one end of the twenty-second resistor R22 and one end of the twenty-third resistor R23, respectively. Pin 2 of the water volume meter interface CN5 is electrically connected to one end of the tenth capacitor C10 and grounded. Pin 3 of the water volume meter interface CN5 is electrically connected to the other end of the twenty-second resistor R22 and +5V, respectively. The other end of the tenth capacitor C10 and the other end of the twenty-third resistor R23 are electrically connected to pin 2 of MCU13.

[0075] The above is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For ordinary technicians in this field, various changes, modifications, substitutions and deformations of these embodiments without departing from the principle and purpose of the present invention still fall within the scope of protection of the present invention.

Claims

1. A coffee machine structure without odor and dripping, characterized in that include: A housing (1) and a water tank (2); the water tank (2) is mounted on the housing (1); A water pump (11), an MCU (13) and an electric heating element (14); the water pump (11), the MCU (13) and the electric heating element (14) are located in the housing (1); the water tank (2) is in communication with the inlet of the water pump (11); the outlet of the water pump (11) is in communication with the inlet of the electric heating element (14); and the MCU (13) is electrically connected to the water pump (11) and the electric heating element (14) respectively; A hydraulic chamber assembly; the hydraulic chamber assembly comprises a fixing seat (3), a water inlet joint (4), a duckbill valve (5), a sealing ring (7), a bayonet (8) and a fixing member (9); a first water inlet flow channel (31) is provided on the fixing seat (3); a second water inlet flow channel (91) is provided on the fixing member (9); an inlet of the water inlet joint (4) is communicated with a water outlet of an electric heating member (14); the fixing member (9) is mounted on the fixing seat (3); The outlet of the water inlet joint (4), the first water inlet flow channel (31) and the second water inlet flow channel (91) are connected in sequence, the duckbill valve (5) is mounted on the fixing member (9) and is located at the water outlet of the second water inlet flow channel (91) so that water flows out through the duckbill valve (5), and the water outlet of the duckbill valve (5) is located at the lower part of the fixing member (9), the bayonet (8) is mounted at the lower part of the fixing member (9) and is located next to the water outlet of the duckbill valve (5), and the sealing ring (7) is mounted at the lower part of the fixing member (9) and the bayonet (8) and the water outlet of the duckbill valve (5) are located in the circle of the sealing ring (7); a temperature sensor (16); the temperature sensor (16) being installed at the water outlet of the electric heating element (14) or in a pipeline connecting the electric heating element (14) and the water inlet joint (4); and A brewing cup assembly; the brewing cup assembly is located at the bottom of the fixing member (9), the sealing ring (7) can cover the brewing cup assembly and the water outlet of the duckbill valve (5) can be connected to the brewing cup assembly so that water can enter the brewing cup assembly.

2. The odor-free and drip-free coffee machine structure according to claim 1, characterized in that It also includes a flow meter (10), which is installed on the pipeline between the water tank (2) and the water pump (11).

3. The odor-free and drip-free coffee machine structure according to claim 1, characterized in that It also includes a pressure relief protector (12), the pressure relief protector (12) having a water inlet and two water outlets, the water inlet of the pressure relief protector (12) being in communication with the water outlet of the water pump (11), one water outlet of the pressure relief protector (12) being in communication with the inlet of the electric heating element (14), and the other water outlet of the pressure relief protector (12) being in communication with the water tank (2).

4. The odor-free and drip-free coffee machine structure according to claim 1, characterized in that It also includes a pressing block (6); the duckbill valve (5) is installed on the lower part of the fixing member (9) through the pressing block (6).

5. A circuit structure of a coffee machine structure without odor and dripping, characterized in that The coffee machine structure without odor and dripping according to claim 1 further comprises: MCU (13) and a first capacitor (C1); the MCU (13) is provided with 20 pins, pin 1 of the MCU (13) is grounded, and pin 1 of the MCU (13) is also electrically connected to one end of the first capacitor (C1), the other end of the first capacitor (C1) is electrically connected to pin 20 of the MCU (13), and pin 20 of the MCU (13) is also electrically connected to +5V; A water pump circuit; the water pump circuit comprises a water pump (11), a second X capacitor (CX2), a sixth resistor (R6), an eleventh resistor (R11), a twelfth resistor (R12) and a third thyristor (TR3); the live wire is electrically connected to one end of the eleventh resistor (R11), one end of the sixth resistor (R6) and the cathode of the third thyristor (TR3), two ends of the second capacitor (C2) are electrically connected to the other end of the sixth resistor (R6) and the live wire interface of the water pump (11), an anode of the third thyristor (TR3) is electrically connected to the live wire interface of the water pump (11), a control end of the third thyristor (TR3) and the other end of the eleventh resistor (R11) are electrically connected to one end of the twelfth resistor (R12), and the other end of the twelfth resistor (R12) is electrically connected to pin 10 of the MCU (13); A temperature sensing circuit; the temperature sensing circuit comprises a temperature sensing interface (CN3), a fourth relay (JR4), a fifth relay (JR5), a sixth relay (JR6), a seventeenth resistor (R17), an eighteenth resistor (R18) and a seventh capacitor (C7); one end of the fourth relay (JR4) and the fifth relay (JR5) connected in parallel is electrically connected to +5V, the other end of the fourth relay (JR4) and the fifth relay (JR5) connected in parallel is respectively electrically connected to +5V and one end of the temperature sensing interface (CN3); the other end of the temperature sensing interface (CN3) is electrically connected to one end of the sixth relay (JR6); the other end of the sixth relay (JR6) is respectively electrically connected to the first and second capacitors (C7). One end of the seventeenth resistor (R17) and one end of the eighteenth resistor (R18) are electrically connected, the other end of the seventeenth resistor (R17) is electrically connected to pin 6 of the MCU (13) and one end of the seventh capacitor (C7), and the other end of the eighteenth resistor (R18) and the other end of the seventh capacitor (C7) are grounded; a power supply circuit, a power regulation circuit and a heating circuit; the input end of the power supply circuit is electrically connected to the live wire and the neutral wire respectively, the output end of the power supply circuit is electrically connected to pin 17 of the MCU (13), the heating circuit and the neutral wire interface of the water pump (11), the power regulation circuit is electrically connected to pin 9 of the MCU (13), and the heating circuit is electrically connected to pin 4 of the MCU (13).

6. The circuit structure of the coffee machine structure without odor and dripping according to claim 5, characterized in that The power supply circuit includes a first resistor (R1), a second resistor (R2), a first X capacitor (CX1), a first variable resistor (RV1), a third resistor (R3), a fourth resistor (R4), a first electrolytic capacitor (EC1), a second electrolytic capacitor (EC2), a third electrolytic capacitor (EC3), a first diode (D1), a second diode (D2), a first inductor (L1), a second inductor (L2), a second capacitor (C2), a third capacitor (C3), a thirteenth resistor (R13), a fourteenth resistor (R14), a twenty-fifth resistor (R25), a twenty-sixth resistor (R26), a twenty-seventh resistor (R27), an eleventh capacitor (C11), a first control board (U1), and a first transistor (Q1);The first control board (U1) has 8 pins, and pin 1 of the first control board (U1) is respectively electrically connected to the live wire, one end of the first resistor (R1), one end of the first X capacitor (CX1), one end of the first variable resistor (RV1), the positive electrode of the first electrolytic capacitor (EC1), the negative electrode of the second electrolytic capacitor (EC2), the negative electrode of the third electrolytic capacitor (EC3), one end of the second inductor (L2), one end of the third resistor (R3), one end of the second capacitor (C2) and +5V, and pin 2 of the first control board (U1) is respectively electrically connected to the negative electrode of the first electrolytic capacitor (EC1), the third resistor (R3 ) and the other end of the second capacitor (C2) are electrically connected and grounded, the 4th pin of the first control board (U1) is electrically connected to the positive electrode of the second electrolytic capacitor (EC2) and one end of the first inductor (L1), the 5th pin of the first control board (U1) is electrically connected to one end of the third capacitor (C3) and the other end of the second inductor (L2), the 6th pin of the first control board (U1) is electrically connected to one end of the third capacitor (C3) and the other end of the second inductor (L2), the 8th pin of the first control board (U1) is electrically connected to the other end of the third capacitor (C3), and the neutral line is electrically connected to the positive electrode of the second resistor (R2). The other end, the heating circuit, the neutral line interface of the water pump (11), the other end of the first X capacitor (CX1), the other end of the first variable resistor (RV1) and one end of the fourth resistor (R4) are electrically connected; the other end of the fourth resistor (R4), the positive electrode of the first diode (D1) and the second diode (D2) are connected in series in sequence; the negative electrode of the second diode (D2) is electrically connected to the positive electrode of the third electrolytic capacitor (EC3) and the other end of the first inductor (L1) respectively; the negative electrode of the first diode (D1) is connected in series in sequence with the twenty-fifth resistor (R25) and one end of the twenty-sixth resistor (R26); The other end of the sixth resistor (R26) is electrically connected to one end of the fourteenth resistor (R14) and the base of the first transistor (Q1), the collector of the first transistor (Q1) is electrically connected to one end of the thirteenth resistor (R13) and one end of the twenty-seventh resistor (R27), the other end of the twenty-seventh resistor (R27) is connected to +5V, the other end of the thirteenth resistor (R13) is electrically connected to pin 17 of the MCU (13) and one end of the eleventh capacitor (C11), the other end of the eleventh capacitor (C11), the emitter of the first transistor (Q1) and the other end of the fourteenth resistor (R14) are grounded. ; 7. The circuit structure of the coffee machine structure without odor and dripping according to claim 5, characterized in that The heating circuit comprises an electric heating element (14), a first thyristor (TR1), a seventh resistor (R7), an eighth resistor (R8), a ninth resistor (R9), a twenty-ninth resistor (R29) and a second triode (Q2); the neutral line interface of the electric heating element (14) is electrically connected to the neutral line, the live line interface of the electric heating element (14) is electrically connected to the anode of the first thyristor (TR1), the cathode of the first thyristor (TR1) is electrically connected to the live line, and the control end of the first thyristor (TR1) is electrically connected to the ninth resistor (R7), the eighth resistor (R8), the ninth resistor (R9), the twenty-ninth resistor (R29) and the ... R9) and one end of the twenty-ninth resistor (R29) are electrically connected, the other end of the ninth resistor (R9) and the other end of the twenty-ninth resistor (R29) are respectively electrically connected to the collector of the second triode (Q2), the base of the second triode (Q2) is respectively electrically connected to one end of the seventh resistor (R7) and one end of the eighth resistor (R8), the emitter of the second triode (Q2) is grounded, the other end of the seventh resistor (R7) is electrically connected to four pins of the MCU (13), and the other end of the eighth resistor (R8) is grounded.

8. The circuit structure of the odorless and drip-free coffee machine structure according to claim 5, characterized in that The invention also includes a power regulation circuit, which includes a regulation interface (CN1), a nineteenth resistor (R19), a twentieth resistor (R20), a first relay (JR1), a second relay (JR2), and a third relay (JR3), wherein one end of the first relay (JR1), the second relay (JR2), and the third relay (JR3) connected in parallel is grounded, and the other end of the first relay (JR1), the second relay (JR2), and the third relay (JR3) connected in parallel is electrically connected to one end of the regulation interface (CN1) and grounded, and the other end of the regulation interface (CN1) is electrically connected to one end of the nineteenth resistor (R19) and one end of the twentieth resistor (R20), respectively, and the other end of the nineteenth resistor (R19) is electrically connected to pin 9 of the MCU (13), and the other end of the twentieth resistor (R20) is connected to +5V.

9. The circuit structure of the coffee machine structure without odor and dripping according to claim 5, characterized in that The invention also includes a pressure relief valve circuit, the pressure relief valve circuit including a pressure relief valve, a third X capacitor (CX3), a fifth resistor (R5), a tenth resistor (R10), a twenty-eighth resistor (R28), and a second thyristor (TR2), wherein the neutral line port of the pressure relief valve is electrically connected to the neutral line, the live line port of the pressure relief valve is electrically connected to the anode of the second thyristor (TR2) and one end of the third X capacitor (CX3), the neutral line is electrically connected to one end of the fifth resistor (R5), one end of the tenth resistor (R10), and the cathode of the second thyristor (TR2), the control end of the second thyristor (TR2) and the other end of the tenth resistor (R10) are electrically connected to one end of the twenty-eighth resistor (R28), the other end of the twenty-eighth resistor (R28) is electrically connected to pin 5 of the MCU (13), and the other end of the fifth resistor (R5) is electrically connected to the other end of the third X capacitor (CX3).

10. The circuit structure of the coffee machine structure without odor and dripping according to claim 5, characterized in that The device also includes an LED circuit, a burning circuit, a buzzer circuit and a water volume circuit. The LED circuit includes an LED circuit interface (CN6), a fifth transistor (Q5), a fifteenth resistor (R15) and a sixteenth resistor (R16). Pin 1 of the LED circuit interface (CN6) is electrically connected to the collector of the fifth transistor (Q5). The base of the fifth transistor (Q5) is electrically connected to one end of the fifteenth resistor (R15) and one end of the sixteenth resistor (R16). The emitter of the fifth transistor (Q5) and the emitter of the sixth resistor (R16) are electrically connected to the emitter of the fifth transistor (Q5). The other end of the fifteenth resistor (R15) is electrically connected to +5V, the other end of the sixteenth resistor (R16) is electrically connected to pin 19 of the MCU (13), and pin 2 of the LED circuit interface (CN6) is electrically connected to pin 18 of the MCU (13); the burning circuit includes a burning interface (CN4), pin 1 of the burning interface (CN4) is electrically connected to +5V, pin 2 of the burning interface (CN4) is grounded, pin 3 of the burning interface (CN4) is electrically connected to pin 7 of the MCU (13), and the burning interface (CN4) The 4th pin of the MCU (13) is electrically connected to the 8th pin of the MCU (13); the buzzer circuit includes a buzzer (BUZ) and a 30th resistor (R30), one end of the buzzer (BUZ) is electrically connected to one end of the 30th resistor (R30), the other end of the buzzer (BUZ) is electrically connected to the 3rd pin of the MCU (13), and the other end of the 30th resistor (R30) is electrically connected to +5V; the water volume circuit includes a water meter interface (CN5), a 22nd resistor (R22), a 23rd resistor (R23), and a 10th capacitor (C10), pin 1 of the water meter interface (CN5) is electrically connected to one end of the twenty-second resistor (R22) and one end of the twenty-third resistor (R23), pin 2 of the water meter interface (CN5) is electrically connected to one end of the tenth capacitor (C10) and grounded, pin 3 of the water meter interface (CN5) is electrically connected to the other end of the twenty-second resistor (R22) and +5V, and the other end of the tenth capacitor (C10) and the other end of the twenty-third resistor (R23) are electrically connected to pin 2 of the MCU (13).

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