A control method of a coffee maker

Abstract

The application discloses a control method of a coffee machine, which comprises the following steps: starting the coffee machine, controlling a power unit to drive a press head to move downwards, judging whether there is material in a powder storage container before grinding; detecting whether the current height of the press head meets the set grinding requirement, and if yes, starting a grinding device and closing the power unit, so that coffee beans are ground into coffee powder, and the coffee powder enters the powder storage container through a powder channel; after grinding is completed, the grinding device is closed, the power unit is started, and the press head moves downwards to extrude the coffee powder in the powder storage container; the power unit is closed and a water pump assembly is controlled to start to brew coffee, and the power unit drives the press head to move to a preset position. The height position of the press head is detected, so that the automatic brewing of coffee is realized, and whether there is material in the powder storage container before grinding is judged, so that operation is avoided, and machine failure caused by the fact that the powder channel is blocked due to the existence of material in the powder storage container during grinding is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coffee machines, in particular to a control method of a coffee machine. BACKGROUND

[0002] The coffee machine is used to prepare coffee by adding coffee raw materials into a container, grinding the coffee raw materials by a grinding device, pressing the ground coffee by a grinding head, and then brewing the ground coffee in the funnel by hot water under a certain pressure.

[0003] The funnel of the coffee machine is generally designed to be detachable, so that the coffee machine has both the functions of adding coffee powder and brewing coffee and grinding coffee. The cavity formed between the funnel and the coffee powder pressing head of the existing coffee machine is in a high-humidity, high-temperature and high-pressure environment when brewing coffee. The cavity space is relatively small, and there is dust in the cavity. It is difficult to set a suitable detection element to accurately detect whether there is coffee residue in the funnel, so that the powder channel between the grinding device and the coffee powder pressing device is easily blocked during grinding, and other machine failures occur. For example, after brewing coffee, the user forgets to clean the coffee residue in the funnel, and directly starts grinding the next time. If no corresponding detection element is set, the ground coffee powder may not fall into the powder bowl normally, but will accumulate in the powder channel, causing machine failure. For another example, when the user adds coffee powder into the funnel to prepare to use the coffee powder brewing function, but mistakenly selects the coffee grinding function. If no corresponding detection element is set, the powder channel will be blocked, causing machine failure.

[0004] The present application provides a control method of a coffee machine, which aims to solve at least one of the above technical problems. SUMMARY

[0005] In view of the above analysis, the present application provides a control method of a coffee machine to solve the problems of the prior art.

[0006] The present application is mainly realized by the following technical solutions:

[0007] The control method of the coffee machine provided by the present application is applied to a coffee machine control system, and the control method comprises the following steps:

[0008] S1: after the coffee machine is powered on, the coffee is started to be made, and the control unit controls the power unit of the coffee powder pressing device to start;

[0009] S2: the power unit drives the coffee powder pressing head to move downward, and according to the current height position of the coffee powder pressing head, it is judged whether there is material in the coffee powder storage container before grinding. When the trigger part of the power unit drives the coffee powder pressing head to move to the first preset position to trigger the first position switch, the control unit determines that there is no material in the coffee powder storage container, and the power unit drives the coffee powder pressing head to move upward, and enters step S3;

[0010] S3: judging whether the current height position of the powder pressing head meets the set grinding requirement, if meeting the grinding requirement, the control unit closes the power unit and starts the grinding device, the grinding device grinds the coffee beans into coffee powder, the coffee powder enters the powder storage container through the powder channel until the grinding is completed, and step S4 is entered;

[0011] S4: the control unit closes the grinding device and controls the power unit to start, driving the powder pressing head to move downward to extrude the coffee powder in the powder storage container until the extrusion is completed, and step S5 is entered;

[0012] S5: the control unit closes the power unit and controls the water pump assembly to start to brew coffee until the brewing is completed, and step S6 is entered;

[0013] S6: the control unit controls the power unit to drive the trigger part of the powder pressing head to move to a second preset position above the first preset position and then stop moving, and then returns to the power-on state.

[0014] Further, the step S2 further includes the following steps:

[0015] When the brewing position switch is triggered by the movement of the pressing cap and the trigger part of the powder pressing head, it is determined that there is material in the powder storage container;

[0016] When the power unit drives the trigger part of the powder pressing head to move upward to the second preset position and triggers the second position switch, the control unit controls the power unit to close, and the coffee machine returns to the power-on state;

[0017] The user is prompted to take out the powder storage container to manually clean the material.

[0018] Further, the step S3 meeting the grinding requirement includes the following:

[0019] The powder pressing head moves upward to open the powder outlet of the powder channel, and the trigger part on the powder pressing head moves upward to the third preset position above the second preset position to trigger the third position switch.

[0020] Further, the step S4 further includes the following steps:

[0021] During the extrusion process, according to the current height position of the powder pressing head, it is judged whether the coffee powder in the powder storage container meets the set powder amount requirement, if meeting the powder amount requirement, step S5 is entered, if not meeting the powder amount requirement, the control unit controls the power unit to drive the trigger part of the powder pressing head to move upward to the second preset position or the third preset position to trigger the second position switch or the third position switch, the control unit controls the power unit to close, and the coffee machine returns to the power-on state.

[0022] Further, the powder pressing head is provided with a first trigger part and a second trigger part;

[0023] The step of determining whether the coffee powder in the powder storage container meets the set powder amount requirement comprises the following steps:

[0024] When the reaction force of the coffee powder in the powder storage container on the press head is so large that the elastic member between the press head and the press cover is compressed to a distance set between the two, the first trigger part of the press head triggers the brewing position switch on the press cover, but the second trigger part of the press head does not move to the fourth preset position between the first and second preset positions to trigger the fourth position switch, the control unit determines that the coffee powder in the powder storage container is too much, and the power unit drives the second trigger part of the press head to move upward to the second or third preset position to trigger the second or third position switch, respectively, and the control unit controls the power unit to be turned off, and the coffee machine returns to the power-on state, prompting the user to remove the powder storage container and clean the coffee powder.

[0025] When the second trigger part of the press head moves to the first preset position to trigger the first position switch, the control unit determines that the coffee powder is too little, and the power unit drives the second trigger part of the press head to move upward to the second or third preset position to trigger the second or third position switch, respectively, and the control unit controls the power unit to be turned off, and the coffee machine returns to the power-on state, prompting the user to add coffee beans.

[0026] When the brewing position switch moves with the press cover to trigger the first trigger part of the press head and the second trigger part moves to the fourth preset position to trigger the fourth position switch, the control unit determines that the coffee powder in the powder storage container meets the powder amount requirement.

[0027] By determining whether the powder amount in the powder storage container is appropriate, the situation that the coffee brewed is very light or even hot water is directly brewed when the amount of coffee beans is not enough to be ground and brewed is avoided, the brewing effect of coffee is not affected, and the taste and consistency of the brewed coffee are ensured. When the amount of ground or added coffee powder is too much, the press head cannot seal the powder storage container, and the coffee machine still performs coffee brewing, which may cause coffee overflow, reduce the failure rate of the coffee machine, and reduce the risk of burns.

[0028] Further, the step S6 further comprises a step S7:

[0029] The user removes the powder storage container to clean the coffee residue and scrape off the coffee powder or coffee residue at the bottom of the press head.

[0030] Further, the coffee machine control system comprises a grinding device, a heating and brewing system, and a control device, the heating and brewing system comprises a press device, and the control device comprises a second position switch, a first position switch arranged in sequence from top to bottom.

[0031] The powder tamping device includes a telescopic cylinder, a power unit, a tamping head, a pressing cover, and a powder storage container for accommodating coffee powder. A powder channel is provided between the telescopic cylinder and the grinding device. The powder storage container is detachably mounted at the bottom of the telescopic cylinder. The output end of the power unit is connected to the pressing cover. The tamping head is slidably mounted on the pressing cover with an elastic member disposed therebetween. A trigger rod is connected to the tamping head. The trigger rod is provided with a first trigger portion and a second trigger portion. The power unit drives the pressing cover to move the tamping head between the telescopic cylinder and the powder storage container, causing the second trigger portion on the trigger rod to cooperate with the second position switch and the first position switch. The tamping head is blocked and stops moving. The pressing cover drives the brewing position switch to move relative to the tamping head to compress the elastic member, causing the brewing position switch to cooperate with the first trigger portion on the trigger rod to be triggered. The first trigger portion and the second trigger portion are staggered to cooperate with different position switches.

[0032] When there is material such as coffee powder or coffee grounds in the powder storage container, and the force exerted by the coffee powder or coffee grounds on the tamping head is greater than the elastic force of the elastic member between the tamping head and the pressing cover, the tamping head stops moving, and the pressing cover compresses the elastic member and continues to move for a distance, so that the pressing cover and the tamping head approach each other and reach a set distance, the first trigger part triggers the brewing position switch to detect the amount of coffee powder or coffee grounds in the powder storage container, so as to remind the user to perform subsequent operations. After taking out the powder storage container, it can be known whether there is coffee powder or coffee grounds in the powder storage container.

[0033] Furthermore, the control device includes a control panel, a third position switch located above the second position switch, and a fourth position switch located between the first position switch and the second position switch. The control panel is provided with a control unit that is electrically connected to the brewing position switch, the grinding device, and the power unit, respectively. The third position switch, the fourth position switch, the first position switch, and the second position switch are installed on the control panel and are electrically connected to the control unit, respectively.

[0034] Furthermore, the heating and brewing system also includes a heating component and a water pump component electrically connected to the control device respectively. The heating component is connected to the water pump component and the powder pressing device through water pipes respectively, and the water pump component is connected to the water supply device.

[0035] Compared with the prior art, the beneficial effects of the technical solution of the present invention are as follows:

[0036] 1. The present invention provides a coffee machine control method that detects the height position of the tamping head to achieve automatic control of coffee brewing and can determine whether there is material in the powder storage container before grinding, so as to avoid machine malfunction due to the presence of material in the powder storage container that is not detected during grinding and causes the powder passage to be blocked.

[0037] 2. By setting the first position switch, the control unit can determine whether there is residual material in the powder container before brewing according to the triggering of the first trigger part and the second trigger part with the first position switch and the brewing position switch, so that the user can clean the powder container in time when needed, and avoid direct grinding of coffee powder when the powder container is full of coffee powder; the control unit can determine whether the amount of powder in the powder container is appropriate when pressing the powder according to the triggering of the first trigger part, the second trigger part, the brewing position switch and the fourth position switch, and the first position switch, so that the user can supplement coffee powder or clean coffee powder in time.

[0038] 3. By setting the second position switch and detachably setting the powder container, the control unit can position the position of the pressing head according to the triggering signal of the second trigger part and the second position switch after brewing coffee, to prompt the user to take out the powder container for slag cleaning, and the coffee powder slag on the pressing head can be scraped off when the powder container is taken out, to avoid deterioration of residual coffee slag.

[0039] 4. On the basis of the structure of the existing powder pressing device, an elastic member is arranged between the pressing cap and the pressing head, the power unit drives the pressing cap to drive the pressing head to move up and down, the current position of the pressing head is detected by the triggering of the first trigger part and the second trigger part of the trigger lever on the pressing head with the brewing position switch and the third position switch and the fourth position switch on the pressing cap under different height conditions, to ensure that the amount of powder in the powder container is within the normal set range, and the grinding, pressing and brewing operations are accurately controlled through the triggering of the second trigger part with the first position switch and the second position switch. The structure of the coffee machine is more simplified, the production and manufacturing are more convenient, and the cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0041] Figure 1 is a brief schematic diagram of a control method of a coffee machine provided by an embodiment of the present application;

[0042] Figure 2 is a structural schematic diagram of a coffee machine control system provided by an embodiment of the present application;

[0043] Figure 3 is a structural schematic diagram of a pressing cap and a pressing head provided by an embodiment of the present application;

[0044] Figure 4is a structural schematic view of the trigger part of the trigger lever and the position switch according to an embodiment of the present application;

[0045] Figure 5 is a structural schematic view of the coffee machine control system in the grinding state;

[0046] Figure 6 is a structural schematic view of the trigger part of the trigger lever and the control device when the grinding amount is too much;

[0047] Figure 7 is a structural schematic view of the trigger part of the trigger lever and the control device when the grinding amount is too little;

[0048] Figure 8 is a structural schematic view of the coffee machine control system in the pressing state;

[0049] Figure 9 is a structural schematic view of the coffee machine control system after coffee brewing;

[0050] Figure 10 is a position structure view of the pressing head, the pressing cover and the position switch.

[0051] The reference signs are as follows:

[0052] 1, grinding device, 2, heating brewing system, 3, pressing device, 31, telescopic cylinder, 32, power unit, 33, pressing head, 34, pressing cover, 35, powder storage container, 36, elastic member, 37, trigger lever, 371, first trigger part, 372, second trigger part, 38, support, 4, third position switch, 5, fourth position switch, 6, brewing position switch, 7, control board, 9, first position switch, 10, second position switch, 11, powder channel, 12, machine body, 13, heating assembly, 14, water pump assembly, 15, water pipe, 20, coffee powder. DETAILED DESCRIPTION

[0053] In order to make the person skilled in the art better understand the present application, and to make the scope of the present application clearer, the present application is described in detail below with respect to some specific embodiments of the present application. It should be noted that the following is only some specific embodiments of the present application concept and is only a part of the embodiments of the present application, and the specific and direct description of the related structure is only for the convenience of understanding the present application, and each specific feature does not necessarily and directly limit the scope of the present application. The routine selection and replacement made by the person skilled in the art under the guidance of the present application concept should be considered within the scope of the present application.

[0054] The present application is further described below with respect to the drawings and specific embodiments.

[0055] Embodiment 1

[0056] As Figure 1 shown, the present application provides a control method of a coffee machine, which is applied to a coffee machine control system, the control method comprising the following steps:

[0057] S1: after the coffee machine is powered on, coffee making is started, and the control unit controls the power unit 32 of the powder pressing device 3 to start.

[0058] S2: the power unit 32 drives the powder pressing head 33 to move downward, and according to the current height position of the powder pressing head 33, it is judged whether there is material in the powder storage container 35 before grinding. When the trigger part of the powder pressing head 33 driven by the power unit 32 moves to the first preset position to trigger the first position switch 9, the control unit determines that there is no material in the powder storage container 35, and the power unit 32 drives the powder pressing head 33 to move upward, and enters step S3.

[0059] In actual use, when there is a small amount of material in the powder storage container, it will not affect the normal grinding, powder pressing and brewing operations of the coffee, so the manual cleaning of the material can be performed only when the material exceeds the set amount according to the needs.

[0060] Specifically, the following scenarios are included:

[0061] When the brewing position switch 6 moves with the pressing cap 34 to trigger the trigger part of the powder pressing head 33, it is determined that there is material in the powder storage container 35;

[0062] When the trigger part of the powder pressing head 33 driven by the power unit 32 moves upward to the second preset position to trigger the second position switch 10, the control unit controls the power unit 32 to close, and the coffee machine returns to the power-on state; prompt the user to take out the powder storage container 35 to manually clean the material. Whether there is coffee powder or coffee residue in the powder storage container 35, it will be considered as material in step S2.

[0063] S3: it is judged whether the current height position of the powder pressing head 33 meets the set grinding requirement, and if it meets the grinding requirement, the control unit closes the power unit 32 and starts the grinding device 1, the grinding device 1 grinds the coffee beans into coffee powder, the coffee powder enters the powder storage container 35 through the powder channel 11, and the grinding is completed, and enters step S4. Including the following: the powder pressing head 33 moves upward to open the powder outlet of the powder channel 11, and the trigger part on the powder pressing head 33 moves upward to the third preset position above the second preset position to trigger the third position switch 4.

[0064] S4: the control unit closes the grinding device 1 and controls the power unit 32 to start, drives the powder pressing head 33 to move downward to press the coffee powder in the powder storage container 35, until the pressing is completed, and enters step S5.

[0065] In the extrusion process, according to the current height position of the powder pressing head 33, it is judged whether the coffee powder in the powder storage container 35 meets the set powder amount requirement. If it meets the powder amount requirement, step S5 is entered. If it does not meet the powder amount requirement, the control unit controls the power unit 32 to drive the trigger part of the powder pressing head 33 to move upward to the third preset position to trigger the third position switch 4, and then the control unit controls the power unit 32 to be closed, and the coffee machine returns to the power-on state. At this time, the position of the powder pressing head 33 only needs to be able to take out the powder storage container 35 to clean the coffee powder. In addition, another embodiment is included. If it does not meet the powder amount requirement, the control unit controls the power unit 32 to drive the trigger part of the powder pressing head 33 to move upward to the second preset position to trigger the second position switch 10, and then the control unit controls the power unit 32 to be closed, and the coffee machine returns to the power-on state.

[0066] It includes the following: The powder pressing head 33 is provided with a first trigger part 371 and a second trigger part 372; and it is judged whether the coffee powder in the powder storage container 35 meets the set powder amount requirement.

[0067] It includes the following steps: When the powder pressing head 33 is subjected to the reaction force of the coffee powder in the powder storage container 35, which is large enough to compress the elastic member 36 between the powder pressing head 33 and the pressing cover 34, so that the distance between the two reaches a set distance, the first trigger part 371 of the powder pressing head 33 triggers the brewing position switch 6 on the pressing cover 34, but the second trigger part 372 of the powder pressing head 33 does not move to the fourth preset position between the first preset position and the second preset position to trigger the fourth position switch 5, the control unit determines that the powder amount of the coffee powder in the powder storage container 35 is too much, the power unit 32 drives the second trigger part 372 of the powder pressing head 33 to move upward to the third preset position to trigger the third position switch 4, or the power unit 32 drives the second trigger part 372 of the powder pressing head 33 to move upward to the second preset position to trigger the second position switch 10, and then the control unit controls the power unit 32 to be closed, and the coffee machine returns to the power-on state, prompting the user to take out the powder storage container 35 and clean the coffee powder.

[0068] When the second trigger part 372 of the powder pressing head 33 moves to the first preset position to trigger the first position switch 9, the control unit determines that the powder amount of the coffee powder is too small, the power unit 32 drives the second trigger part 372 of the powder pressing head 33 to move upward to the third preset position to trigger the third position switch 4, or the power unit 32 drives the second trigger part 372 of the powder pressing head 33 to move upward to the second preset position to trigger the second position switch 10, and then the control unit controls the power unit 32 to be closed, and the coffee machine returns to the power-on state, prompting the user to supplement coffee beans.

[0069] When the brewing position switch 6 moves with the grommet 34 to act on the first trigger part 371 of the press powder head 33 to trigger and the second trigger part 372 moves to the fourth preset position to trigger the fourth position switch 5, the control unit determines that the coffee powder amount in the powder storage container 35 meets the powder amount requirement. The second trigger part 372 is located outside the first trigger part 371, and the first trigger part 371 is located below the brewing position switch 6.

[0070] S5: The control unit turns off the power unit 32 and controls the water pump assembly 14 to start brewing coffee until the brewing is completed, and enters step S6;

[0071] S6: The control unit controls the power unit 32 to drive the trigger part of the press powder head 33 to move to the second preset position above the first preset position and then stop moving, and then returns to the power-on state. The second preset position corresponds to the second position switch 10, and the control unit controls the power unit 32 to turn off.

[0072] S7: After step S6, the user takes out the powder storage container 35 to clean the coffee residue and scrapes off the coffee powder or coffee residue at the bottom of the press powder head 33.

[0073] As Figures 2-4As shown, the coffee machine control system comprises a grinding device 1, a heating brewing system 2 and a control device, the heating brewing system 2 comprises a powder pressing device 3, and the control device comprises a third position switch 4, a second position switch 10, a fourth position switch 5 and a first position switch 9 arranged in sequence on a straight line from top to bottom; the powder pressing device 3 comprises a telescopic cylinder 31, a power unit 32, a powder pressing head 33, a pressing cover 34 and a powder storage container 35 for containing coffee powder 20, a powder channel 11 is arranged between the telescopic cylinder 31 and the grinding device 1, the powder storage container 35 is detachably arranged at the bottom of the telescopic cylinder 31, the output end of the power unit 32 is connected with the pressing cover 34, the powder pressing head 33 is slidingly arranged on the pressing cover 34 and is provided with an elastic member 36 therebetween, a trigger rod 37 is connected with the powder pressing head 33, the trigger rod 37 is provided with a first trigger part 371 and a second trigger part 372, the power unit 32 drives the pressing cover 34 to drive the powder pressing head 33 to move between the telescopic cylinder 31 and the powder storage container 35, so that the second trigger part 372 on the trigger rod 37 cooperates with the third position switch 4, the fourth position switch 5, the first position switch 9 and the second position switch 10, the powder pressing head 33 is stopped from moving due to obstruction, the pressing cover 34 drives a brewing position switch 6 to move relative to the powder pressing head 33 to compress the elastic member 36, so that the brewing position switch 6 cooperates with the first trigger part 371 on the trigger rod 37 to realize triggering. In the embodiment, the power unit 32 is in transmission connection with the pressing cover 34 through a transmission mechanism, the powder pressing device 3 further comprises a support 38, the powder pressing head 33 and the pressing cover 34 are movably mounted on the support 38, the powder storage container 35 is a powder bowl with a conventional structure, the elastic member 36 is a spring, the bottom of the trigger rod 37 is connected with the powder pressing head 33, and the top thereof passes through the top of the pressing cover 34 upward. In actual conditions, the second trigger part 372 does not trigger any two of the third position switch 4, the fourth position switch 5, the first position switch 9 and the second position switch 10 at the same time.

[0074] When the elastic member 36 is not compressed, the first trigger part 371 and the second trigger part 372 are located above the outside of the powder pressing head 33, the first trigger part 371 is provided with a preset interval from the brewing position switch 6, and the first trigger part 371 cooperates with the brewing position switch 6 and is located below the brewing position switch 6. In the embodiment, the powder pressing device 3 further comprises a shell for mounting the powder pressing head 33 and the pressing cover 34, the control board 7 is fixed to the outside of the shell through the support 38, and the first trigger part 371 and the second trigger part 372 are located on the outside of the shell.

[0075] When the coffee machine works, the powder pressing head 33 is slidingly arranged in the telescopic cylinder 31 and the powder storage container 35 to move up and down, when the powder pressing head 33 moves in the telescopic cylinder 31, an outlet of the powder channel 11 is opened or closed, when the powder pressing head 33 moves into the powder storage container 35, the coffee powder is compacted, and the powder amount or whether there is powder residue is detected through the corresponding position switch.

[0076] As Figure 2、 4 As shown, the control device includes a control board 7 located outside the second trigger portion 372. The control board 7 is equipped with a control unit electrically connected to the brewing position switch 6, the grinding device 1, and the power unit 32. The third position switch 4, the fourth position switch 5, the first position switch 9, and the second position switch 10 are mounted on the control board 7 and electrically connected to the control unit. When the trigger lever 37 moves with the powder tampon 33, its second trigger portion 372 cooperates with the first position switch 9 and the second position switch 10.

[0077] The heating and brewing system 2 also includes a heating assembly 13 and a water pump assembly 14, each electrically connected to the control unit of the control device. The heating assembly 13 is connected to the water pump assembly 14 and the powder tamping device 3 via a water pipe 15, and the water pump assembly 14 is connected to the water supply device. In this embodiment, the coffee machine includes a machine body 12, within which the grinding device 1, the powder tamping device 3, the heating assembly 13, the water pump assembly 14, and the control device are located. The water supply device is a water storage container or an external water supply device located within the machine body 12. The water pump assembly 14 is equipped with a flow meter to facilitate adjusting the amount of hot water required for brewing coffee.

[0078] like Figures 4-10 As shown, the position of the first trigger portion 371 of the trigger lever 37 on the tamping head 33 relative to the brewing position switch 6 and the second trigger portion 372 relative to the first position switch 9 is detected to determine whether there is material in the powder container 35. This prevents the powder duct 11 from becoming blocked due to certain conditions, reduces malfunctions during actual use of the coffee machine, and ensures more stable and reliable machine operation. For example, if a user forgets to clean the coffee grounds from the powder container 35 after brewing coffee, if the user directly grinds the coffee the next time, the ground coffee will not fall into the powder container 35 properly and will accumulate in the powder duct 11, causing the coffee machine to malfunction. For another example, if a user mistakenly selects the ground coffee method when brewing coffee with powder added and the powder container 35 is already full of coffee grounds, the coffee machine will directly start grinding, blocking the powder duct 11 and causing a malfunction.

[0079] When the coffee is brewed, the powder pressing head 33 continues to move upward, and the position of the powder pressing head 33 is detected by the second position switch 10, so that when the second trigger part 372 triggers the second position switch 10, the top of the powder storage container 35 is located below the powder pressing head 33, so that when the powder storage container 35 is taken out, its top edge can scrape off the coffee powder or coffee grounds remaining on the powder pressing head 33 during the pressing process, so as to avoid the powder grounds from deteriorating over time and causing contamination of the coffee machine. There is no need to manually clean it each time, which will not cause trouble to the user. The powder grounds on the powder pressing head can be cleaned during normal operation, making the machine cleaner and more hygienic, and ensuring the health of the user.

[0080] When the powder container 35 is empty, the powder outlet of the powder channel 11 is closed when the powder pressure head 33 is at the bottommost position, and the brewing position switch 6 is located outside the first position switch 9 and the fourth position switch 5; when the powder pressure head 33 is at the topmost position, the powder outlet of the powder channel 11 is opened, and the brewing position switch 6 is located outside the third position switch 4 and the second position switch 10.

[0081] The above merely describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-described embodiments. Any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and refinements without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. A method for controlling a coffee machine, characterized in that: It is applied to a coffee machine control system, and the control method includes the following steps: S1: The coffee machine is powered on and starts making coffee, and the control unit controls the power unit (32) of the powder pressing device (3) to start; S2: The power unit (32) drives the powder pressing head (33) to move downward, and determines whether there is material in the powder storage container (35) before grinding based on the current height position of the powder pressing head (33). When the power unit (32) drives the triggering portion of the powder pressing head (33) to move to the first preset position to trigger the first position switch (9), the control unit determines that there is no material in the powder storage container (35), and the power unit (32) drives the powder pressing head (33) to move upward, and enters step S3; S3: Determine whether the current height position of the tamping head (33) meets the set grinding requirements. If the grinding requirements are met, the control unit turns off the power unit (32) and starts the grinding device (1). The grinding device (1) grinds the coffee beans into coffee powder, and the coffee powder enters the powder storage container (35) through the powder channel (11). After the grinding is completed, the process proceeds to step S4. S4: The control unit turns off the grinding device (1) and controls the power unit (32) to start, driving the tamping head (33) to move downward to squeeze the coffee powder in the powder storage container (35) until the squeezing is completed, and then enters step S5; S5: The control unit turns off the power unit (32) and controls the water pump assembly (14) to start brewing coffee until the brewing is completed, and then enters step S6; S6: The control unit controls the power unit (32) to drive the trigger portion of the powder pressing head (33) to move to a second preset position above the first preset position, stops moving, and then returns to the power-on state.

2. The coffee machine control method according to claim 1, wherein: The step S2 further comprises the following steps: When the brewing position switch (6) moves with the pressing cover (34) and is triggered by the triggering portion of the powder pressing head (33), it is determined that there is material in the powder storage container (35); When the power unit (32) drives the trigger portion of the powder pressing head (33) to move upward to the second preset position and triggers the second position switch (10), the control unit controls the power unit (32) to turn off, and the coffee machine returns to the power-on state; The user is prompted to remove the powder storage container (35) to manually clean the material.

3. The coffee machine control method according to claim 1, wherein: Meeting the grinding requirements in step S3 includes the following: The powder pressing head (33) moves upward to open the powder outlet of the powder channel (11), and drives the trigger portion on the powder pressing head (33) to move upward to a third preset position located above the second preset position, thereby triggering the third position switch (4).

4. The coffee machine control method according to any one of claims 1 to 3, wherein: Step S4 also includes the following steps: During the extrusion process, the coffee powder in the powder storage container (35) is judged based on the current height position of the powder pressing head (33) to determine whether the coffee powder meets the set powder quantity requirement. If the powder quantity requirement is met, the process proceeds to step S5. If the powder quantity requirement is not met, the control unit controls the power unit (32) to drive the trigger portion of the powder pressing head (33) to move upward to the second preset position or the third preset position. When the second position switch (10) or the third position switch (4) is triggered correspondingly, the control unit controls the power unit (32) to turn off, and the coffee machine returns to the power-on state.

5. The coffee machine control method according to claim 4, wherein: The powder pressing head (33) is provided with a first triggering portion (371) and a second triggering portion (372); The determination of whether the coffee powder in the powder storage container (35) meets the set powder quantity requirement comprises the following steps: When the powder pressing head (33) is subjected to a reaction force from the coffee powder in the powder storage container (35) so great that the elastic member (36) between the powder pressing head (33) and the pressing cover (34) is compressed, so that the distance between the two reaches a set distance, the first triggering portion (371) of the powder pressing head (33) and the brewing position switch (6) on the pressing cover (34) are triggered, but the second triggering portion (372) of the powder pressing head (33) does not move to the fourth preset position between the first preset position and the second preset position to trigger the fourth position switch (5), the control unit determines that there is too much coffee powder in the powder storage container (35), the power unit (32) drives the second triggering portion (372) of the powder pressing head (33) to move upward to the second preset position or the third preset position, and correspondingly triggers the second position switch (10) or the third position switch (4), the control unit controls the power unit (32) to turn off, the coffee machine returns to the power-on state, and prompts the user to remove the powder storage container (35) and remove the coffee powder; When the second trigger portion (372) of the tamping head (33) moves to the first preset position to trigger the first position switch (9), the control unit determines that the amount of coffee powder is too little, and the power unit (32) drives the second trigger portion (372) of the tamping head (33) to move upward to the second preset position or the third preset position, thereby triggering the second position switch (10) or the third position switch (4) accordingly. The control unit controls the power unit (32) to turn off, and the coffee machine returns to the power-on state, prompting the user to replenish coffee beans; When the brewing position switch (6) moves with the pressing cover (34) and interacts with the first triggering portion (371) of the powder pressing head (33) to be triggered, and the second triggering portion (372) moves to the fourth preset position to trigger the fourth position switch (5), the control unit determines that the amount of coffee powder in the powder storage container (35) meets the powder amount requirement.

6. The coffee machine control method according to any one of claims 1 to 3, wherein: The step S6 further includes step S7: The user takes out the powder storage container (35) to clean the coffee grounds and scrapes off the coffee powder or coffee grounds at the bottom of the powder pressing head (33).

7. The coffee machine control method according to claim 1, wherein: The coffee machine control system comprises a powder grinding device (1), a heating and brewing system (2), and a control device, wherein the heating and brewing system (2) comprises a powder pressing device (3), and the control device comprises a second position switch (10) and a first position switch (9) arranged in sequence from top to bottom; The powder pressing device (3) comprises a telescopic cylinder (31), a power unit (32), a powder pressing head (33), a pressing cover (34) and a powder storage container (35) for accommodating coffee powder (20). A powder channel (11) is provided between the telescopic cylinder (31) and the grinding device (1). The powder storage container (35) is detachably fitted and placed at the bottom of the telescopic cylinder (31). The output end of the power unit (32) is connected to the pressing cover (34). The powder pressing head (33) is slidably arranged on the pressing cover (34) and an elastic member (36) is provided between the pressing head (33). A trigger rod (37) is connected to the trigger rod (37). A first The power unit (32) drives the pressing cover (34) to drive the powder pressing head (33) to move between the telescopic cylinder (31) and the powder storage container (35), so that the second triggering part (372) on the triggering rod (37) cooperates with the second position switch (10) and the first position switch (9), and the powder pressing head (33) is blocked and stops moving. The pressing cover (34) drives the brewing position switch (6) to move relative to the powder pressing head (33) to compress the elastic member (36), so that the brewing position switch (6) cooperates with the first triggering part (371) on the triggering rod (37) to achieve triggering.

8. The coffee machine control method according to claim 7, wherein: The control device comprises a control panel (7), a third position switch (4) located above the second position switch (10), and a fourth position switch (5) located between the first position switch (9) and the second position switch (10). The control panel (7) is provided with a control unit electrically connected to the brewing position switch (6), the grinding device (1), and the power unit (32), respectively. The third position switch (4), the fourth position switch (5), the first position switch (9), and the second position switch (10) are mounted on the control panel (7) and electrically connected to the control unit, respectively.

9. The coffee machine control method according to claim 7 or 8, wherein: The heating and brewing system (2) further comprises a heating component (13) and a water pump component (14) which are electrically connected to the control device respectively; the heating component (13) is connected to the water pump component (14) and the powder pressing device (3) respectively via a water pipe (15); and the water pump component (14) is connected to the water supply device.

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