Full-automatic coffee machine

Abstract

The utility model relates to the field of coffee machines, in particular to a full-automatic coffee machine. The brewing device comprises a pipeline assembly, a grinding assembly and a brewing unit, the brewing unit comprises a residue scraping mechanism, a brewing head, a brewing cup assembly, a supporting plate and a driving assembly, the brewing cup assembly comprises a brewing cup and a piston, the residue scraping mechanism is arranged at a cup opening of the brewing cup assembly, the driving assembly drives the brewing cup assembly to move, a guide rail is arranged on the supporting plate, and the piston is arranged on the guide rail. When the brewing cup assembly moves along the axis of the driving assembly, the brewing cup assembly is guided by the guide rail, and the position and the direction of the brewing cup assembly are changed along with changes of the track of the guide rail, so that the brewing cup assembly is switched among a piston reset section, a powder filling position, a brewing position, a slag ejecting section and a slag scraping section. The driving assembly drives the brewing cup assembly and the brewing head to abut against each other to enable the piston to reset, the brewing cup assembly and the abutting plate abut against each other to enable the waste residue cake to be ejected out, and the driving assembly drives the brewing cup assembly to move upwards to enable related residue scraping devices to be matched with each other to trigger residue scraping action. According to the coffee machine, the stroke of the brewing cup assembly during other brewing actions is reused, the brewing cup assembly does not need to be made to scrape residues downwards by adding an extra stroke length, unnecessary parts are reduced, and the size of the machine body of the coffee machine is optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of coffee machine, concretely relates to a full -automatic coffee machine. BACKGROUND

[0002] In the prior art, patent document CN117017065A discloses that the piston is moved by the gear mechanism driven by the motor, the space change of the piston movement and the brewing cup realizes the obtaining of the residue discharging and powder filling space, CN115568759A discloses that the piston is moved by the screw rod assembly driven by the motor, the space change of the piston movement and the brewing cup realizes the obtaining of the residue discharging and powder filling space, and patent document CN117137325A discloses that the piston is moved by the elastic member extension and contraction, the space change of the piston movement and the brewing cup realizes the obtaining of the residue discharging and powder filling space. Some coffee machines set buckles on the piston bottom of the brewing cup, set mechanisms matched with the buckles on the supporting plate, make the two buckles and the mechanisms matched with the buckles mutually buckled, and cooperate with the driving mechanism to achieve the function of resetting the piston. The above-mentioned schemes have high complexity of the mechanism for driving the piston to reset, have more parts, and can increase the failure rate of the product. The structure can make the volume of the finished product larger, which is contrary to the concept of miniaturization of the coffee machine. SUMMARY

[0003] The utility model provides a full -automatic coffee machine.

[0004] The above object is achieved.

[0005] A full -automatic coffee machine, comprising a pipeline assembly, a grinding assembly and a brewing unit, the brewing unit comprising a residue scraping mechanism, a brewing head, a brewing cup assembly, a supporting plate and a driving assembly, the brewing cup assembly comprising a brewing cup and a piston, the piston reciprocating in the brewing cup, the residue scraping mechanism being arranged at the cup opening position of the brewing cup assembly, the driving assembly driving the brewing cup assembly to move, the supporting plate being provided with a guide rail, the brewing cup assembly moving along the axis of the driving assembly while being guided by the guide rail and changing position and direction along with the change of the guide rail track, so that the brewing cup assembly is converted between the piston reset section, the powder loading position, the brewing position, the residue pushing section and the residue scraping section, and the brewing position is in the piston reset section.

[0006] When the brewing cup assembly moves to the piston reset section under the driving of the driving assembly, the brewing cup assembly is engaged with the brewing head, the piston top surface is in contact with the brewing head, and the driving assembly drives the brewing cup assembly to continue moving to the brewing head until the piston is pushed to the bottom of the brewing cup by the brewing head.

[0007] When the brewing cup assembly is moved to the powder loading position by the piston reset section, the brewing cup assembly is driven downward by the driving assembly and guided by the guide rail, so that the brewing cup assembly is turned from the inclined state consistent with the direction of the brewing head to the vertical state with the cup opening of the brewing cup assembly facing upward, in which state the grinding assembly grinds coffee beans into coffee powder and releases the coffee powder into the brewing cup assembly;

[0008] After the powder loading of the brewing cup assembly is completed, the driving assembly drives the brewing cup assembly to move upward to the brewing position, and the brewing cup assembly is guided by the guide rail and turned from the vertical state to the inclined state consistent with the axial direction of the brewing head. The brewing cup assembly moves upward to the position of the brewing head and engages with the brewing head. Hot water generated in the pipeline assembly enters the cavity formed by the brewing head and the brewing cup to extract coffee.

[0009] Further comprising a stop plate arranged on the support plate. When the brewing cup assembly moves downward from the top residue section, the bottom surface of the piston keeps in contact with the stop plate. At the top residue start position, the top surface of the piston is at the bottom of the brewing cup. At the top residue end position, the top surface of the piston rises to the cup opening of the brewing cup, at which time the coffee residue cake is ejected.

[0010] After the brewing cup assembly completes the top residue, the driving assembly drives the brewing cup assembly to move upward to the residue scraping section. In the process of moving upward, the residue scraping mechanism is triggered to perform the residue scraping action, and the waste residue cake is scraped off.

[0011] Preferably, the brewing unit further comprises a touch device arranged on the support plate. The touch device cooperates with the residue scraping device to trigger the residue scraping action. The residue scraping mechanism comprises a residue scraping plate, which comprises a residue scraping plate rotating shaft and a driven part. The residue scraping plate is arranged at the cup opening position of the brewing cup assembly and rotates or moves relative to the cup opening. The touch device comprises a touch block and a touch block rotating shaft. The touch block rotates around the touch block rotating shaft.

[0012] Preferably, when the driving assembly drives the brewing cup assembly to rise for residue scraping, the touch block contacts the driven part. With the driving assembly continuing to drive the brewing cup assembly to rise, the touch block presses the driven part to drive the residue scraping plate to rotate around the residue scraping plate rotating shaft toward the direction of the brewing cup opening. When the driving assembly drives the brewing cup assembly to move downward, the driven part contacts the touch block. With the driving assembly continuing to drive the brewing cup assembly to move downward, the driven part presses the touch block to rotate the touch block around the touch block rotating shaft until the touch block is disengaged from the driven part.

[0013] Preferably, the grinding assembly comprises a grinding wheel, a grinding cavity, a powder outlet cavity, a plasma generator and a plasma generating cavity, the plasma generator comprises a plasma generator electrode, the powder outlet cavity inlet is communicated with the grinding cavity outlet, the powder outlet cavity comprises a powder outlet channel, the powder outlet channel extends downward from the powder outlet cavity inlet, the plasma generating cavity is located above the powder outlet channel and communicated with the powder outlet channel, the plasma generator electrode extends into the plasma generating cavity at least partially, and the coffee powder processed in the grinding cavity is released after entering the powder outlet cavity from the grinding cavity outlet.

[0014] Preferably, the pipeline assembly comprises a water tank, a flow meter, a water pump, a pressure relief valve and a heating body connected in sequence.

[0015] Preferably, the pipeline assembly further comprises a first electromagnetic valve, a second electromagnetic valve, a waste water box and a steam outlet, the outlet 1-2 of the first electromagnetic valve is connected with the heating body, the outlet 1-1 of the first electromagnetic valve is connected with the brewing head and the outlet 2-3 of the second electromagnetic valve, the outlet 1-3 of the first electromagnetic valve is connected with the waste water box, the outlet 2-1 of the second electromagnetic valve is connected with the steam outlet, and the outlet 2-2 of the second electromagnetic valve is connected with the waste water box.

[0016] Preferably, when making coffee, the cold water in the water tank is heated into hot water by the heating body, the first electromagnetic valve is powered on, the outlet 1-1 and the outlet 1-2 are communicated, and the second electromagnetic valve is not powered on, the outlet 2-1 and the outlet 2-3 are not communicated.

[0017] Preferably, when making foamed milk, the cold water in the water tank is heated into steam by the heating body, the first electromagnetic valve and the second electromagnetic valve are powered on, the outlet 1-1 and the outlet 1-2 of the first electromagnetic valve are communicated, and the outlet 2-3 and the outlet 2-2 of the second electromagnetic valve are communicated.

[0018] After the above technical scheme is adopted, the utility model has the following beneficial effects:

[0019] 1. The brewing head is used as a top block, the driving assembly drives the brewing cup assembly and the brewing head to top each other to reset the piston, and the brewing cup assembly and the stop plate top each other to eject the waste cake, different components are matched to realize multiple functions, unnecessary parts are reduced, the overall structure is simplified, and the product failure rate is reduced.

[0020] 2. The driving assembly drives the brewing cup assembly to move upward to make the related residue scraping devices cooperate to trigger the residue scraping action, the stroke of the reused brewing cup assembly during other brewing actions does not need to add an additional stroke length to make the brewing cup assembly scrape residue downward, and the volume of the coffee machine body is optimized.

[0021] 3. The plasma generating cavity is arranged above the powder outlet channel, the plasma can be fully generated, the plasma generator electrode extends into the generating cavity, the plasma generator electrode is staggered with the powder channel, so that the electrode is not polluted and covered by the coffee powder; the plasma generated by the plasma generating cavity above the coffee powder channel can fully mix with the coffee powder passing through the coffee powder channel, eliminate static electricity, and make the coffee powder not adhere to the inner wall of the powder outlet cavity. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a perspective view of the full-automatic coffee machine.

[0023] Figure 2 It is a perspective view of the coffee grinding device.

[0024] Figure 3 It is Figure 2 It is a sectional view of A-A.

[0025] Figure 4 It is a schematic view of the plasma generator electrode and the powder outlet channel.

[0026] Figure 5 It is a schematic view when the piston is reset.

[0027] Figure 6 It is a schematic view when the brewing cup assembly is connected with the powder.

[0028] Figure 7 It is a schematic view when the waste cake is pushed out by the piston.

[0029] Figure 8 It is a schematic view when the waste cake is scraped by the scraping mechanism.

[0030] Figure 9 It is a schematic view of the scraping mechanism and the touching device when the scraping mechanism scrapes the waste of the brewing cup assembly.

[0031] Figure 10 It is a schematic view of the scraping mechanism and the touching device after the brewing cup assembly is scraped.

[0032] Figure 11 It is a schematic view of the scraping mechanism and the touching device when the brewing cup assembly descends through the touching device.

[0033] Figure 12 It is another schematic view of the scraping mechanism and the touching device when the brewing cup assembly descends through the touching device.

[0034] Figure 13 It is a schematic view of the part connection of the full-automatic coffee machine. DETAILED DESCRIPTION

[0035] The utility model will be further described in connection with the drawings and the specific embodiment.

[0036] In combination Figure 1 An automatic coffee machine, comprising a pipeline assembly, a grinding assembly 1, a dreg scraping mechanism 25, a brewing head 22, a brewing cup assembly 23, a support plate 21 and a driving assembly, the brewing cup assembly 23 comprises a brewing cup and a piston 230, the piston 230 reciprocates in the brewing cup, the dreg scraping mechanism 25 is arranged at the cup opening position of the brewing cup assembly 23, the driving assembly drives the brewing cup assembly 23 to move, the support plate 21 is provided with a guide rail 212 and the grinding assembly 1, the brewing cup assembly 23 moves along the axis of the driving assembly and is guided by the guide rail 212 and changes position and direction along with the change of the track of the guide rail 212, so that the brewing cup assembly 23 is switched between the piston 230 reset section, the powder loading position, the brewing position, the dreg pushing section and the dreg scraping section.

[0037] The brewing head 22 is provided with a water inlet pipe 213, the water inlet pipe 213 communicates with the brewing head 22, the brewing cup assembly 23 is provided with a water outlet pipe 214, the water outlet pipe 214 communicates with the inner cavity of the brewing cup.

[0038] In combination Figure 5 When the brewing cup assembly 23 moves to the piston 230 reset section under the driving of the driving assembly, the brewing cup assembly 23 is engaged with the brewing head 22, the driving assembly drives the brewing cup assembly 23 to continue moving to the brewing head 22 until the piston 230 is pushed to the bottom of the brewing cup by the brewing head 22. When the brewing cup assembly 23 enters the piston 230 reset section, the driving assembly drives the brewing cup assembly 23 to rise to the position of the brewing head 22 to engage the brewing cup assembly 23 with the brewing head 22, the driving assembly drives the brewing cup assembly 23 to continue moving to the brewing head 22, the piston 230 moves downward relative to the brewing cup assembly 23 until it is pushed to the bottom of the brewing cup by the brewing head 22, the length L of the brewing head 22 is greater than or equal to the depth S of the inner cavity of the brewing cup so that the brewing head 22 can completely push the piston 230 to the bottom of the inner cavity of the brewing cup.

[0039] In combination Figure 6 When the brewing cup assembly 23 moves from the piston 230 reset section to the powder loading position, the brewing cup assembly 23 is driven downward by the driving assembly and is guided by the guide rail 212, so that the brewing cup assembly 23 is turned from the inclined state consistent with the direction of the brewing head to the vertical state in which the cup opening of the brewing cup assembly 23 faces upward, in this state, the grinding assembly 1 grinds coffee beans into coffee powder and releases the coffee powder into the brewing cup assembly 23.

[0040] After the powdering of the brewing cup assembly 23 is completed, the driving assembly drives the brewing cup assembly 23 to move upward to the brewing position, and at the same time, the brewing cup assembly 23 is guided by the guide rail 212 to change from the vertical state to the inclined state consistent with the axial direction of the brewing head 22. The brewing cup assembly 23 moves upward to the position of the brewing head 22 and engages with the brewing head 22. Hot water enters the cavity formed by the brewing head 22 and the brewing cup to extract coffee.

[0041] In combination Figure 7 Further comprising a stop plate 211 arranged on the support plate 21. When the brewing cup assembly 23 moves from top to bottom in the top residue section, the bottom surface of the piston 230 keeps in contact with the stop plate 211. In the top residue starting position, the top surface of the piston 230 is at the bottom of the brewing cup. In the top residue ending position, the top surface of the piston 230 rises to the mouth of the brewing cup. At this time, the coffee residue cake is ejected.

[0042] In combination Figure 8 、 Figure 9 、 Figure 11 After the brewing cup assembly 23 completes the top residue, the driving assembly drives the brewing cup assembly 23 to move upward to the residue scraping section. Further comprising a touch device 24 arranged on the support plate 21. The touch device 24 cooperates with the residue scraping device to trigger the residue scraping action. The residue scraping mechanism 25 includes a residue scraping plate, which includes a residue scraping plate rotating shaft 252 and a driven part 253. The residue scraping plate is arranged at the mouth position of the brewing cup assembly 23. The residue scraping plate rotates or moves relative to the cup mouth. The touch device 24 includes a touch block 241 and a touch block rotating shaft 242. The touch block 241 rotates around the touch block rotating shaft 242. When the driving assembly drives the brewing cup assembly to rise for residue scraping, the touch block 241 contacts the driven part 253. As the driving assembly continues to drive the brewing cup assembly 23 to rise, the touch block 241 presses the driven part 253 to drive the residue scraping plate to rotate around the residue scraping plate rotating shaft 252 towards the direction of the brewing cup mouth.

[0043] When the driving assembly drives the brewing cup assembly 23 to move downward through the touch device 24, the driven part 253 contacts the touch block 241. As the driving assembly continues to drive the brewing cup assembly 23 to descend, the driven part 253 presses the touch block 241 to rotate the touch block 241 around the touch block rotating shaft 242 until the touch block 241 is disengaged from the driven part 253. When the touch device 24 moves downward, it will not trigger the residue scraping action of the residue scraping mechanism 25.

[0044] The grinding assembly 1 comprises a grinding wheel 111, a grinding cavity 11, a powder outlet cavity 12, a plasma generator 13 and a plasma generating cavity 131, the plasma generator 13 comprises a plasma generator electrode 13, the powder outlet cavity 12 is communicated with the grinding cavity 11 at the outlet of the grinding cavity 11, the powder outlet cavity 12 comprises a powder outlet channel 121, the powder outlet channel 121 extends downward from the inlet of the powder outlet cavity 12, the plasma generating cavity 131 is located above the powder outlet channel 121 and communicated with the powder outlet channel 121, the plasma generator electrode 13 is at least partially inserted into the plasma generating cavity 131, and the coffee powder processed in the grinding cavity 11 is released after entering the powder outlet cavity 12 from the outlet of the grinding cavity 11, wherein the vertical distance L1 between the plasma generator electrode 13 and the powder outlet channel 121 is greater than or equal to 0.5 mm, and the narrowest width S1 of the plasma generating cavity 31 is greater than or equal to 0.5 mm. When the plasma generator works, the air in the powder outlet cavity 12 is ionized by the plasma generator electrode 13.

[0045] The pipeline assembly comprises a water tank 31, a flow meter 32, a water pump 33, a pressure relief valve 34 and a heating body 35 connected in sequence, and further comprises a first electromagnetic valve 36, a second electromagnetic valve 37, a waste water box 39 and a steam outlet 38, wherein the outlet 1-2 of the first electromagnetic valve 36 is connected with the heating body 35, the outlet 1-1 of the first electromagnetic valve 36 is connected with the brewing head and the outlet 2-3 of the second electromagnetic valve 37, the outlet 1-3 of the first electromagnetic valve 36 is connected with the waste water box 39, the outlet 2-1 of the second electromagnetic valve 37 is connected with the steam outlet 38, and the outlet 2-2 of the second electromagnetic valve 37 is connected with the waste water box 39.

[0046] When making coffee, the heating body 35 starts to heat under the control of the control circuit board, the heating body 35 is heated to a set temperature, the water pump 33 is started to pump water, the cold water passes through the filter screen, the flow meter 32 and the pressure relief valve 34 and is heated into hot water by the heating body 35, the first electromagnetic valve 36 is powered on, the outlet 1-1 and the outlet 1-2 are communicated, the hot water flows to the outlet 1-1 through the outlet 1-2 of the first electromagnetic valve 36, at this time, the second electromagnetic valve 37 is not powered on, the outlet 2-1 and the outlet 2-3 are not communicated, the hot water flows into the brewing cavity through the outlet 1-1 and the brewing head 22 to brew coffee, and the brewed coffee flows out from the water outlet pipe 214. After the coffee is brewed, the first electromagnetic valve 36 is powered on, the outlet 1-1 and the outlet 1-3 are communicated, and the residual water in the brewing cavity is discharged into the waste water box 39.

[0047] When the frothy milk is made, the heating element 35 starts to heat under the control of the control circuit board, and after being heated to the set temperature, the water pump 33 starts to pump water, the cold water is heated to steam by the heating element 35, the first solenoid valve 36 and the second solenoid valve 37 are energized, the outlet 1-1 and the outlet 1-2 of the first solenoid valve 36 are connected, and the outlet 2-3 and the outlet 2-2 of the second solenoid valve 37 are connected. The steam is sprayed from the steam outlet 38 to froth the milk.

[0048] The specific implementation process is as follows: when the coffee is made, the heating element 35 starts to heat under the control of the control circuit board, and at the same time, the brewing cup assembly 23 is driven by the driving mechanism to move from the initial position to the piston 230 reset section, and the piston 230 is pushed to the bottom of the brewing cup. After that, the driving mechanism drives the brewing cup assembly 23 to move downward to the powder receiving position, and under the action of the guide rail 212, the direction of the brewing cup is changed from the inclination of the piston 230 reset section to vertical. After the heating element 35 is heated to the set temperature, the grinding assembly 1 starts to grind the beans, and the ground coffee powder falls into the coffee cup through the powder outlet channel 121. After a certain amount of coffee powder is loaded, the control circuit board controls the driving mechanism to drive the brewing cup assembly 23 to move and rotate to the brewing position, engage with the brewing head 22, and compact the coffee powder. Then the water pump 33 starts to work, and the cold water is heated to hot water by the heating element 35. The hot water enters the brewing cavity formed by the brewing head 22 and the brewing cup to brew coffee, and the coffee flows out through the coffee outlet. After the coffee brewing is completed, the brewing cup assembly 23 is driven by the driving system to move down to the residue scraping section, and the piston 230 is stopped by the stop plate 211. The brewing cup assembly 23 continues to move down until the waste residue cake is pushed out of the brewing cup opening. At this time, the driving system drives the brewing cup assembly 23 to move up to the residue scraping section. In the residue scraping section, the residue scraping plate on the brewing cup assembly 23 is in contact with the touch block 241, and the residue scraping plate is forced to rotate to scrape the waste residue cake from the brewing cup opening and drop into the waste residue box. The brewing cup assembly 23 moves to the initial position. The coffee making process is completed. If the milk needs to be frothed, the heating element 35 starts to heat under the control of the control circuit board, and after being heated to the set temperature, the water pump 33 starts to pump water, the cold water is heated to steam by the heating element 35, the first solenoid valve 36 and the second solenoid valve 37 are energized, the outlet 1-1 and the outlet 1-2 of the first solenoid valve 36 are connected, and the outlet 2-3 and the outlet 2-2 of the second solenoid valve 37 are connected. The steam passes through the outlet 1-2, the outlet 1-1, the outlet 2-3, and the outlet 2-2 in turn, and finally the steam is sprayed from the steam outlet 38 to froth the milk.

Claims

1. A fully automatic coffee machine comprising a pipeline assembly, a grinding assembly, a brewing unit, the brewing unit comprising a dreg scraping mechanism, a brewing head, a brewing cup assembly, a support plate and a drive assembly, the brewing cup assembly comprising a brewing cup and a piston, the piston reciprocating within the brewing cup, the dreg scraping mechanism being arranged at the mouth of the brewing cup assembly, the drive assembly driving the movement of the brewing cup assembly, the support plate being provided with a guide rail, the brewing cup assembly being guided by the guide rail while moving along the axis of the drive assembly and changing position and direction as the guide rail changes trajectory, so that the brewing cup assembly is transferred between a piston return section, a powder loading position, a brewing position, a dreg ejection section and a dreg scraping section, characterized in that: The brewing position is in the piston reset section; When the brewing cup assembly is driven by the driving assembly to move to the piston reset section, the brewing cup assembly is engaged with the brewing head, the piston top surface is in contact with the brewing head, and the driving assembly drives the brewing cup assembly to continue moving to the brewing head until the piston is topped by the brewing head to the bottom of the brewing cup; When the brewing cup assembly is driven by the driving assembly to move to the piston reset section, the brewing cup assembly is engaged with the brewing head, the piston top surface is in contact with the brewing head, and the driving assembly drives the brewing cup assembly to continue moving to the brewing head until the piston is topped by the brewing head to the bottom of the brewing cup; When the brewing cup assembly is driven by the driving assembly to move to the piston reset section, the brewing cup assembly is engaged with the brewing head, the piston top surface is in contact with the brewing head, and the driving assembly drives the brewing cup assembly to continue moving to the brewing head until the piston is topped by the brewing head to the bottom of the brewing cup; When the brewing cup assembly is driven by the driving assembly to move to the piston reset section, the brewing cup assembly is engaged with the brewing head, the piston top surface is in contact with the brewing head, and the driving assembly drives the brewing cup assembly to continue moving to the brewing head until the piston is topped by the brewing head to the bottom of the brewing cup; The brewing unit further comprises a stop plate arranged on the support plate, when the brewing cup assembly moves from top to bottom in the top residue section, the piston bottom surface is in contact with the stop plate, at the top residue start position, the piston top surface is at the bottom of the brewing cup, at the top residue end position, the piston top surface rises to the mouth of the brewing cup, at this time, the coffee residue cake is ejected; 2. The fully automatic coffee machine according to claim 1, characterized in that: When the brewing cup assembly is driven by the driving assembly to move to the piston reset section, the brewing cup assembly is engaged with the brewing head, the piston top surface is in contact with the brewing head, and the driving assembly drives the brewing cup assembly to continue moving to the brewing head until the piston is topped by the brewing head to the bottom of the brewing cup; 3. The fully automatic coffee machine according to claim 2, characterized in that: The brewing unit further comprises a touch device arranged on the support plate, the touch device and the scraping device cooperate to trigger the scraping action, the scraping mechanism comprises a scraping plate, the scraping plate comprises a scraping plate rotating shaft and a driven part, the scraping plate is arranged at the mouth position of the brewing cup assembly, the scraping plate rotates or moves relative to the mouth, and the touch device comprises a touch block and a touch block rotating shaft. When the driving assembly drives the brewing cup assembly to rise for scraping, the touch block is in contact with the driven part, and as the driving assembly continues to drive the brewing cup assembly to rise, the touch block presses the driven part to drive the scraping plate to rotate around the scraping plate rotating shaft towards the direction of the mouth of the brewing cup; 4. The fully automatic coffee machine according to claim 1, characterized in that: When the driving assembly drives the brewing cup assembly to move downward, the driven part is in contact with the touch block, and as the driving assembly continues to drive the brewing cup assembly to move downward, the driven part presses the touch block to rotate the touch block around the touch block rotating shaft until the touch block is disengaged from the driven part. The grinding assembly comprises a grinding wheel, a grinding cavity, a powder outlet cavity, a plasma generator and a plasma generation cavity, the plasma generator comprises a plasma generator electrode, an inlet of the powder outlet cavity is communicated with an outlet of the grinding cavity, the powder outlet cavity comprises a powder outlet channel extending downward from the inlet of the powder outlet cavity, the plasma generation cavity is located above the powder outlet channel and communicated with the powder outlet channel, the plasma generator electrode at least partially extends into the plasma generation cavity, and the ground coffee powder flows out of the grinding cavity and falls into the brewing cup through the powder outlet channel of the powder outlet cavity.

5. The fully automatic coffee machine according to claim 1, characterized in that: The pipeline assembly comprises a water tank, a flow meter, a water pump, a pressure relief valve and a heating body connected in sequence.

6. The fully automatic coffee machine according to claim 5, characterized in that: The pipeline assembly further comprises a first electromagnetic valve, a second electromagnetic valve, a wastewater box and a steam outlet, the outlet 1-2 of the first electromagnetic valve is connected with the heating body, the outlet 1-1 of the first electromagnetic valve is connected with the brewing head and the outlet 2-3 of the second electromagnetic valve, the outlet 1-3 of the first electromagnetic valve is connected with the wastewater box, the outlet 2-1 of the second electromagnetic valve is connected with the steam outlet, and the outlet 2-2 of the second electromagnetic valve is connected with the wastewater box.

7. The fully automatic coffee machine according to claim 6, characterized in that: When making coffee, cold water in the water tank is heated into hot water by the heating body, the first electromagnetic valve is powered on, the outlet 1-1 and the outlet 1-2 are communicated, and the second electromagnetic valve is not powered on, the outlet 2-1 and the outlet 2-3 are not communicated.

8. The fully automatic coffee machine according to claim 6, characterized in that: When making foamed milk, cold water in the water tank is heated into steam by the heating body, the first electromagnetic valve and the second electromagnetic valve are powered on, the outlet 1-1 and the outlet 1-2 of the first electromagnetic valve are communicated, and the outlet 2-3 and the outlet 2-2 of the second electromagnetic valve are communicated.

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