A coffee processing system and a control method thereof

Abstract

The application discloses a coffee processing system and a control method thereof, which comprises a grinding device, a powder pressing brewing device and a drying device. The grinding device comprises a grinding cavity and a grinding assembly. The powder pressing brewing device comprises a first space and a powder pressing head. When the powder pressing head is in a first position, a first sealing part is located above a ventilation hole, and high-temperature gas flows through the second space and the grinding cavity in sequence for drying. When the powder pressing head is in a second position, the first sealing part is located below the ventilation hole, and high-temperature gas flows through the third space and the grinding cavity in sequence for drying. Since the third space and the brewing chamber are separated by the first sealing part, the local drying operation of the grinding cavity and the powder pressing head is not affected when coffee is brewed.

Description

Technical Field

[0001] This invention relates to the field of coffee brewing technology, and more specifically to a coffee processing system and its control method. Background Technology

[0002] Because the flavor of freshly ground coffee diminishes significantly after opening, coffee machines that can grind coffee beans on the spot have emerged on the market. These machines mainly consist of a water tank, water pump, heating element, grinding element, brewing element, and tamper. During brewing, the grinding element grinds the coffee beans into powder. The ground coffee powder then enters the brewing chamber of the brewing unit through the powder discharge channel between the grinding and brewing elements. Inside the brewing chamber, the coffee powder is tamped by the tamper head of the tamper. Once the tamper stops moving, the heating element heats the cold water pumped from the water tank to the set temperature. Hot water is then introduced into the brewing chamber through the water inlet pipe on the tamper head, brewing the tamped coffee powder at a high temperature. After brewing, the user manually cleans the coffee grounds from the brewing chamber.

[0003] After brewing, water and a small amount of coffee grounds usually remain on the tamper. Because the brewing chamber is filled with steam during brewing, any remaining coffee grounds in the grinder and churn may come into contact with the rising steam, causing them to become damp. If the coffee machine is not used for a long time, this can lead to mold growth on the tamper and the coffee grounds. This not only affects the taste of subsequent brews but can also seriously impact the user's health. Disassembling and cleaning the tamper after each use is not only inconvenient but also detracts from the user experience.

[0004] Therefore, the purpose of this application is to provide a coffee processing system and its control method that can solve at least one of the above problems. Summary of the Invention

[0005] In view of the above analysis, the present invention proposes a coffee processing system and its control method aimed at solving at least one of the above technical problems.

[0006] This invention is mainly achieved through the following technical solutions:

[0007] The present invention provides a coffee processing system, including a grinding device, a tamping and brewing device, and a drying device for providing high-temperature gas; the grinding device includes a grinding chamber and a grinding assembly; the tamping and brewing device includes a first space and a tamping head;

[0008] The powder outlet of the grinding chamber is connected to the first space, and the inner wall of the first space is provided with a vent hole that is connected to the drying device; the powder pressing head is slidably disposed in the first space along the vertical direction and has at least a first position and a second position; the bottom side wall of the powder pressing head is provided with a first sealing part that seals with the inner wall of the first space;

[0009] When the powder pressing head is in the first position, the first sealing part is located above the vent hole, and the first sealing part, the powder pressing head and the lower inner wall of the first space cooperate to form a second space that communicates with the grinding chamber.

[0010] When the powder pressing head is in the second position, the first sealing part is located below the vent hole. The first sealing part and the powder pressing head divide the first space into a third space located above the first sealing part and a brewing chamber located below the first sealing part. The third space is connected to the grinding chamber.

[0011] When the tamper head is in the first position, high-temperature gas flows through the second space and the grinding chamber in sequence for drying; when the tamper head is in the second position, high-temperature gas flows through the third space and the grinding chamber in sequence for drying. Since the third space is separated from the brewing chamber by the first sealing part, the local drying operation of the grinding chamber and the tamper head will not be affected during coffee brewing.

[0012] Furthermore, the drying device includes an air chamber, a heating component, and a gas guiding component. The air chamber is connected to the first space through a gas guiding channel and a vent. The heating component heats the air in the air chamber into a high-temperature gas, and the gas guiding component guides the high-temperature gas from the air chamber into the first space through the gas guiding channel. Through integrated design, the drying device can perform heating and hot air blowing operations to dry the interior of the coffee processing system.

[0013] Furthermore, the drying device includes a bottom shell and a cover, the cover being installed at the opening of the bottom shell to form an air chamber;

[0014] The heating component is installed inside the bottom shell, and the air guiding component includes a first driving component and a fan blade component. The first driving component is installed on the cover, and the fan blade component is installed on the output shaft of the first driving component.

[0015] Alternatively, the heating component is installed inside the bottom shell, and the air guiding component is connected to the air chamber and the vent through air guiding channels. This allows hot air from the air chamber to be blown into the air guiding channels, or hot air from the air chamber to be drawn into the air guiding channels.

[0016] Furthermore, the coffee processing system also includes a water supply device for supplying water, and the tamping head is provided with a water inlet channel connected to the water supply device;

[0017] The heating component is equipped with a heating channel, and the water inlet channel is connected to the water supply device through the heating channel.

[0018] By using a single heating element, the gas in the air chamber and the cold water entering the heating channel can be heated simultaneously, saving space for the heating element, improving energy utilization and efficiency, and making it more environmentally friendly.

[0019] Furthermore, a second sealing part is provided between the side wall of the first space and the outer side wall of the powder pressing head. The second sealing part is located above the first sealing part and is installed on the side wall of the first space or the powder pressing head.

[0020] When the powder pressing head is in the first position, a second space is formed around and below the vent hole, which is top-sealed and communicates with the grinding chamber on the side.

[0021] When the powder pressing head is in the second position, the vent is located between the first sealing part and the second sealing part. The first sealing part, the second sealing part, the powder pressing head, and the inner wall of the first space cooperate to form a third annular space around the vent. The side of the third space is connected to the grinding chamber.

[0022] Furthermore, it also includes a second drive assembly for driving the powder pressing head to move linearly within the first space.

[0023] Furthermore, it also includes a control unit. The grinding assembly is connected to a third drive assembly, and the control unit is electrically connected to the third drive assembly, the second drive assembly, the heating assembly, and the air guide assembly, respectively. This is used to automatically control operations such as brewing, grinding, heating, and air blowing in a timely manner, making the coffee brewing and drying processes of the coffee processing system more efficient and intelligent.

[0024] Furthermore, the first space is connected to the powder outlet end of the grinding chamber through a powder discharge channel. One end of the powder discharge channel is located on the circumferential sidewall of the first space where the vent is located, so that hot air can enter and blow through the powder discharge channel and the grinding chamber more smoothly and with less resistance, resulting in the highest drying efficiency and a certain cleaning effect.

[0025] Furthermore, the powder pressing and brewing device also includes a powder box assembly, a powder hopper, and a first housing. The powder hopper is installed between the powder box assembly and the first housing, so that the inner cavities of the three fit together to form the first space. The powder hopper is connected to the powder outlet end of the grinding chamber. The powder box assembly is detachably installed on the powder hopper.

[0026] The vent is located on the powder hopper, and the first sealing part is sealed to the powder box assembly and the inner wall of the powder hopper.

[0027] After the coffee is brewed, the coffee grounds need to be cleaned. To prevent moisture from the cleaned cartridge assembly from entering the grinding chamber, the tamper head is moved to the bottom of the hopper after brewing. This keeps the first seal separating the third space from the brewing chamber while facilitating the disassembly of the cartridge assembly for cleaning the grounds. The cleaned cartridge assembly can continue to dry under the residual heat of the coffee processing system, or it can be connected to the outside atmosphere to facilitate the expulsion of moisture from the cartridge assembly.

[0028] Furthermore, the second sealing part is installed between the first housing and the powder hopper, and the inner edge of the second sealing part protrudes from the inner sidewall of the connection between the first housing and the powder hopper.

[0029] The present invention also provides a control method for a coffee processing system, applied to the coffee processing system, the control method comprising the following steps:

[0030] When the coffee processing system receives a drying control command while grinding coffee powder, the tamping head moves to the first position, the first sealing part moves to the top of the vent in the first space, and the drying device starts to let high-temperature gas flow through the vent, the second space, and the grinding chamber in sequence for drying.

[0031] When the coffee processing system receives a drying control command while brewing coffee, the tamping head moves to the second position, the first sealing part moves within the first space to below the vent, separating the third space from the brewing chamber, and the drying device is activated to allow high-temperature gas to flow sequentially through the vent, the third space, and the grinding chamber for drying.

[0032] Furthermore, the control method further includes the following steps:

[0033] When the coffee processing system finishes brewing, it receives a drying control command. The tamping head moves to the third position and its bottom is placed inside the coffee hopper. The first sealing part moves within the first space to below the vent hole, separating the third space from the brewing chamber. The drying device is activated to allow high-temperature gas to flow sequentially through the vent hole, the third space, and the grinding chamber for drying.

[0034] The third position is located between the first position and the second position.

[0035] Compared with the prior art, the coffee processing system and control method provided by the present invention have the following advantages:

[0036] By supplying hot air to different locations within the first space when the tamper head is in different positions, the parts of the tamper head that come into contact with water and coffee grounds, the chugging channel, and the grinding chamber can be dried. It can also dry the third space above the brewing chamber, the chugging channel, and the grinding chamber simultaneously with coffee brewing. Because the water and air paths are separated, rising steam during brewing prevents the coffee grounds in the chugging channel and grinding chamber from becoming damp. This ensures that drying and brewing operations do not interfere with each other, and allows for drying of different areas at different stages of operation. This prevents mold growth on the bottom of the tamper head, the chugging channel, and the grinding chamber, ensuring the cleanliness and hygiene of the coffee processing system. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the structure of a coffee processing system provided in an embodiment of the present invention;

[0039] Figure 2 yes Figure 1 A schematic diagram of the decomposition process;

[0040] Figure 3 yes Figure 1 A sectional view;

[0041] Figure 4 yes Figure 1 A cross-sectional view of the high-temperature airflow direction during grinding coffee;

[0042] Figure 5 yes Figure 1 A cross-sectional view showing the direction of the high-temperature airflow during brewing;

[0043] Figure 6 yes Figure 1 A cross-sectional view of the high-temperature airflow direction after brewing;

[0044] Figure 7 yes Figure 1 The structural principle block diagram.

[0045] The attached figures are labeled as follows:

[0046] 1. Grinding device; 1a. Grinding chamber; 11. Grinding assembly; 12. Third drive assembly; 2. Powder pressing and brewing device; 21. First space; 21a. Second space; 21b. Third space; 21c. Vent hole; 21d. Chamber; 22. Powder pressing head; 22a. Water inlet channel; 23. First sealing part; 24. Second sealing part; 25. Second drive assembly; 26. Powder box assembly; 27. Powder hopper; 27a. Powder outlet; 28. First shell. 29. Water outlet plate, 3. Drying device, 3a. Air chamber, 31. Heating component, 311. Heating channel, 32. Air guiding component, 321. First drive component, 322. Fan blade component, 33. Bottom shell, 34. Cover, 34a. Air inlet, 4. Water supply device, 5. Powder discharge channel, 6. Air guiding channel, 7. Brewing chamber, 8. Control unit, 9. Bean storage bin, 100. First position, 200. Second position, 300. Third position. Detailed Implementation

[0047] To enable those skilled in the art to better understand the present invention and to more clearly define the scope of protection of the present invention, the present invention will be described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present invention, and are merely a part of the embodiments of the present invention. The specific and direct descriptions of related structures are only for the convenience of understanding the present invention, and the specific features do not necessarily or directly limit the scope of the present invention. Conventional choices and substitutions made by those skilled in the art under the guidance of the present invention should be considered within the scope of protection of the present invention.

[0048] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0049] Example 1

[0050] like Figure 1-2 As shown in Figures 7 and 8, the present invention provides a coffee processing system, including a grinding device 1, a tamping and brewing device 2, a drying device 3 for providing high-temperature gas, a water supply device 4 for supplying water, and a bean storage bin 9.

[0051] The grinding device 1 includes a grinding chamber 1a, a grinding component 11, and a third drive component 12 connected to the grinding component 11. The grinding component 11 is used to grind the coffee raw material in the bean storage chamber 9 in the grinding chamber 1a and discharge it into the tamping and brewing device 2. The coffee raw material is coffee beans. The grinding device 1 adopts a conventional structure, and its specific structure and implementation principle will not be described in detail here.

[0052] The powder pressing and brewing device 2 includes a first space 21 and a powder pressing head 22. The feed inlet of the grinding chamber 1a is connected to the bottom of the bean storage bin 9. The powder outlet of the grinding chamber 1a is connected to the first space 21 through the powder discharge channel 5. The inner wall of the first space 21 is provided with several vent holes 21c that are connected to the drying device 3 through the air guide channel 6. The powder outlet of the powder discharge channel 5 is connected to the circumferential side wall of the first space 21 where the vent holes 21c are located. The powder pressing head 22 is slidably disposed in the first space 21 and has a first position 100, a second position 200, and a third position 300. The bottom side wall of the powder pressing head 22 is provided with a first sealing part 23 that is movable and sealably fitted with the inner wall of the first space 21. A second sealing part 24 is installed on the side wall of the first space 21 that is movable and seals with the outer side wall of the powder pressing head 22. The second sealing part 24 is located above the first sealing part 23. The first sealing part 23 and the second sealing part 24 are sealing rings.

[0053] like Figure 3-5 As shown, in this embodiment, a partition 21d is also provided on the outside of the first space 21, and the vent 21c is connected to the air guide channel 6 through the partition 21d. The tamping head 22 is provided with a water inlet channel 22a that is connected to the water supply device 4. A water outlet plate 29 is installed at the bottom of the tamping head 22, which is in contact with the water outlet end of the water inlet channel 22a. This plate is used to compact the coffee powder discharged into the bottom of the first space 21 when the tamping head 22 moves downward, and to separate the water outlet of the water inlet channel 22a from the coffee powder at the bottom of the first space 21.

[0054] like Figure 1-2 As shown in Figures 4-5, in this embodiment, the tamping and brewing device 2 further includes a powder cartridge assembly 26, a powder hopper 27, and a first housing 28. The powder hopper 27 is installed between the powder cartridge assembly 26 and the first housing 28, so that the inner cavities of the three components cooperate to form a first space 21. The powder hopper 27 is connected to the grinding device 1 and communicates with the powder outlet of the grinding chamber 1a through the powder discharge channel 5. The powder cartridge assembly 26 is detachably installed on the powder hopper 27, which facilitates cleaning the residual coffee powder in the powder cartridge assembly 26 after the coffee is brewed.

[0055] Vent 21c is located on the middle side wall of powder hopper 27. Powder outlet 27a, which communicates with powder discharge channel 5, is also provided on the middle side wall of powder hopper 27. The first sealing part 23 is movably and sealingly engaged with powder box assembly 26 and the inner side wall of powder hopper 27. The second sealing part 24 is installed between the bottom of the first housing 28 and the top of powder hopper 27, and the inner edge of the second sealing part 24 protrudes from the inner side wall of the connection between the first housing 28 and powder hopper 27. That is, the second sealing part 24 protrudes relative to the inner side wall of the first space 21 to achieve sliding seal with the outer side wall of the powder pressing head 22.

[0056] The bottom of the first housing 28 is open, and the powder container assembly 26 has a brewing chamber 7 with an open top. After the coffee powder is ground, it is discharged into the bottom of the first space 21, i.e., the brewing chamber 7, through the powder discharge channel 5. The powder hopper 27 is a cylindrical structure with openings on the side. The upper side wall of the inner cavity of the powder hopper 27 is sealed with the first sealing part 23, and the top opening of the outer cavity of the powder hopper 27 is sealed with the second sealing part 24 to form a partition cavity 21d. The vent hole 21c penetrates one side wall of the partition cavity 21d.

[0057] The powder pressing head 22 is slidably disposed inside the first housing 28. A second drive assembly 25 connected to the top of the powder pressing head 22 is installed on the first housing 28 for driving the powder pressing head 22 to move vertically in a straight line within the first space 21.

[0058] In another embodiment, the second sealing part 24 is installed on the powder pressing head 22, and the powder hopper 27 is sealed to the first housing 28, which can be achieved by setting a sealing ring.

[0059] like Figure 4 As shown, when grinding beans, drying is required. The bottom of the tamping head 22 is in the first position 100, and the bottom of the tamping head 22 is placed in the upper part of the powder hopper 27. The first sealing part 23 and the tamping head 22 are respectively sealed to the inner wall of the powder hopper 27 in the first space 21. The second sealing part 24 is sealed to the outer wall of the tamping head 22. The first sealing part 23 is located above the vent 21c and the powder outlet 27a, and the second sealing part 24 is located above the first sealing part 23. The first sealing part 23 and the tamping head 22 cooperate with the lower inner wall of the first space 21 to form a second space 21a that communicates with the grinding chamber 1a. That is, a second space 21a with a top seal and side communication with the grinding chamber 1a is formed around and below the vent 21c. The air guide channel 6 communicates with the powder discharge channel 5 through the second space 21a. At this time, the second space 21a includes a brewing chamber 7 with an open top, so that the high-temperature gas generated by the drying device 3 can dry the entire channel through which the coffee raw materials pass, namely the second space 21a, the powder discharge channel 5, the grinding chamber 1a and the bean storage hopper 9.

[0060] During the grinding operation, since hot water is not introduced into the water inlet channel 22a of the tamping head 22, even if the vent 21c is open and connected to the top of the brewing chamber 7, the water path and the air path will not be connected.

[0061] like Figure 4 , 5As shown, when brewing coffee, hot water is introduced into the brewing chamber 7 through the water inlet channel 22a. If drying is required at this time, the bottom of the tamper head 22 is in the second position 200. The bottom of the tamper head 22 passes through the powder hopper 27 and is placed in the upper part of the powder cartridge assembly 26. The bottom of the tamper head 22 is sealed to the inner wall of the powder cartridge assembly 26, forming a top-sealed brewing chamber 7. The first sealing part 23 is located below the vent 21c and the powder outlet 27a. The vent 21c is located between the first sealing part 23 and the second sealing part 24. The first sealing part 23 and the powder pressing head 22 are respectively sealed to the inner wall of the first space 21, dividing the first space 21 into a third space 21b located above the first sealing part 23 and a brewing chamber 7 located below the first sealing part 23. The third space 21b is connected to the grinding chamber 1a. That is, the first sealing part 23, the second sealing part 24, the powder pressing head 22, and the inner wall of the powder box assembly 26 of the first space 21 are sealed to form an annular third space 21b around the vent 21c. The side of the third space 21b is connected to the grinding chamber 1a. The third space 21b and the powder discharge channel 5 are separated from the brewing chamber 7. The air guide channel 6 is connected to the powder discharge channel 5 through the third space 21b. At this time, the high-temperature gas generated by the drying device 3 can continuously dry the third space 21b, the powder discharge channel 5, the grinding chamber 1a, and the bean storage bin 9. The powder discharge channel 5 is formed by connecting the powder outlet opening of the grinding chamber 1a and the powder outlet 27a on the side of the powder hopper 27.

[0062] The powder container assembly 26 adopts a conventional structure. It can be equipped with a liquid outlet at the bottom of the brewing chamber 7, or a liquid outlet valve can be installed on the liquid outlet. The liquid outlet valve is driven by the coffee container located below the liquid outlet valve to open the liquid outlet, so that the coffee flows from the liquid outlet into the coffee container during brewing.

[0063] like Figure 4 , 6 As shown, after the coffee is brewed, it needs to be dried. When the bottom of the tamper head 22 is in the third position 300, that is, the tamper head 22 moves upward to be between the first position 100 and the second position 200. The first sealing part 23 at the bottom of the tamper head 22 seals against the bottom inner wall of the coffee hopper 27, and the first sealing part 23 is located below the vent 21c and the coffee outlet 27a, separating the third space 21b and the coffee discharge channel 5 from the brewing chamber 7. The air guide channel 6 is connected to the coffee discharge channel 5 through the third space 21b. At this time, the high-temperature gas generated by the drying device 3 can continuously dry the third space 21b, the coffee discharge channel 5, the grinding chamber 1a, and the coffee storage hopper 9.

[0064] When the bottom of the powder press head 22 is in the third position 300, the volume of the third space 21b is smaller than the volume of the third space 21b in the second position 200, and the volume of the brewing chamber 7 in the third position 300 is larger than the volume of the brewing chamber 7 in the second position 200.

[0065] like Figure 1-3 As shown, the drying device 3 includes an air chamber 3a, a heating component 31, and a gas guiding component 32. The air chamber 3a is connected to the first space 21 through a gas guiding channel 6 and a vent 21c. The heating component 31 is used to heat the air in the air chamber 3a into a high-temperature gas. The gas guiding component 32 is used to guide the high-temperature gas from the air chamber 3a into the first space 21 through the gas guiding channel 6. The gas guiding component 32 is installed in the air chamber 3a.

[0066] In this embodiment, the drying device 3 includes a bottom shell 33 and a cover 34. The cover 34 is installed at the top opening of the bottom shell 33 to form an air chamber 3a. The heating component 31 is installed inside the bottom shell 33, and a heating channel 311 is installed on the heating component 31. The water inlet channel 22a is connected to the water supply device 4 through the heating channel 311. The water supply device 4 pumps cold water to the heating channel 311 for heating by the heating component 31. When brewing is required, the heated water is introduced into the brewing chamber 7 through the water inlet channel 22a. The air guiding component 32 includes a first drive component 321 and a fan blade component 322. The first drive component 321 is installed on the cover 34, and the cover 34 is provided with a plurality of air inlets 34a. The fan blade component 322 located inside the bottom shell 33 is installed on the output shaft of the first drive component 321. In some other embodiments, the heating component 31 is installed inside the bottom shell 33, and the air guiding component 32 is installed outside the bottom shell 33. The air guiding component 32 is connected to the air chamber 3a and the vent 21c through the air guiding channel 6, respectively.

[0067] In another embodiment, the coffee processing system may also be provided with a separate heating component for separately heating the water supplied by the water supply device 4 into the water inlet channel 22a.

[0068] like Figure 2 , 7 As shown, the coffee processing system also includes a control unit 8, which is electrically connected to the third drive assembly 12, the second drive assembly 25, the heating assembly 31, the first drive assembly 321 of the air guiding assembly 32, and the water supply device 4, respectively, and is used to control the grinding time of the grinding assembly 11, the working status of the second drive assembly 25, the first drive assembly 321, the heating assembly 31, and the water supply device 4, as well as the start and stop times.

[0069] In another embodiment, by setting up sensing elements such as position sensing switches, flow meters, and weight sensors, the control unit 8 can obtain the position of the tamping head 22, the amount of hot water, and the amount of coffee powder ground in a timely manner, and realize automatic control of the start and stop status of the second drive component 25 and the third drive component 12.

[0070] like Figure 1-6As shown, the present invention also provides a control method for a coffee processing system, applied to the aforementioned coffee processing system, the control method comprising the following steps:

[0071] When the coffee processing system receives a drying control command during grinding, the ground coffee powder enters the brewing chamber 7 from the grinding chamber 1a. When the amount of ground coffee powder reaches the set amount, the grinding device 1 stops working. The bottom of the tamping head 22 moves from the third position 300 to the first position 100, and the first sealing part 23 moves within the first space 21 to above the vent 21c. The air guiding component 32 of the drying device 3 is activated, and the high-temperature gas formed after being heated by the heating component 31 flows sequentially through the air guiding channel 6, the vent 21c, the second space 21a, the powder discharge channel 5, the grinding chamber 1a, and the bean storage bin 9 for drying. Drying is performed before grinding to ensure that the coffee beans and coffee powder are in contact with a dry environment.

[0072] Between grinding and brewing coffee, the coffee powder in the brewing chamber 7 is compacted by the tamping head 22.

[0073] When the coffee processing system receives a drying control command during coffee brewing, water heated by the heating component 31 enters the brewing chamber 7 through the water inlet channel 22a on the tamper head 22 to brew the compacted coffee powder. The pumping stops when the hot water reaches the set flow rate. The bottom of the tamper head 22 moves from the first position 100 to the second position 200, and the first sealing part 23 moves within the first space 21 to below the vent 21c, separating the third space 21b from the brewing chamber 7. The air guiding component 32 of the drying device 3 is activated, allowing the high-temperature gas formed after being heated by the heating component 31 to flow sequentially through the air guiding channel 6, the vent 21c, the third space 21b, the powder discharge channel 5, the grinding chamber 1a, and the bean storage bin 9 for drying.

[0074] The above control method also includes the following steps:

[0075] When the coffee processing system receives a drying control command after brewing, the bottom of the tamper head 22 moves from the second position 200 to the third position 300 and is placed inside the coffee hopper 27. The first sealing part 23 moves within the first space 21 to below the vent 21c, separating the third space 21b from the brewing chamber 7. The air guiding component 32 of the drying device 3 is activated, allowing the high-temperature gas formed after being heated by the heating component 31 to flow sequentially through the air guiding channel 6, the vent 21c, the third space 21b, the coffee discharge channel 5, the grinding chamber 1a, and the bean storage hopper 9 for drying. The third position 300 is located between the first position 100 and the second position 200.

[0076] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A coffee processing system, characterized in that: It includes a grinding device (1), a powder pressing and brewing device (2), and a drying device (3) for providing high-temperature gas; the grinding device (1) includes a grinding chamber (1a) and a grinding assembly (11), and the powder pressing and brewing device (2) includes a first space (21) and a powder pressing head (22). The powder outlet of the grinding chamber (1a) is connected to the first space (21). The inner wall of the first space (21) is provided with a vent (21c) that is connected to the drying device (3). The powder pressing head (22) is vertically slidably disposed in the first space (21) and has at least a first position (100) and a second position (200). The bottom side wall of the powder pressing head (22) is provided with a first sealing part (23) that seals with the inner wall of the first space (21). When the powder pressing head (22) is in the first position (100), the first sealing part (23) is located above the vent (21c), and the first sealing part (23), the powder pressing head (22) and the lower inner wall of the first space (21) cooperate to form a second space (21a) that communicates with the grinding chamber (1a). When the powder pressing head (22) is in the second position (200), the first sealing part (23) is located below the vent (21c). The first sealing part (23) and the powder pressing head (22) divide the first space (21) into a third space (21b) located above the first sealing part (23) and a brewing chamber (7) located below the first sealing part (23). The third space (21b) is connected to the grinding chamber (1a).

2. The coffee processing system as described in claim 1, characterized in that: The drying device (3) includes an air chamber (3a), a heating component (31), and a gas guiding component (32). The air chamber (3a) is connected to the first space (21) through a gas guiding channel (6) and a vent (21c). The heating component (31) is used to heat the air in the air chamber (3a) into a high-temperature gas. The gas guiding component (32) is used to guide the high-temperature gas from the air chamber (3a) into the first space (21) through the gas guiding channel (6).

3. The coffee processing system as described in claim 2, characterized in that: The drying device (3) includes a bottom shell (33) and a cover (34), the cover (34) being installed at the opening of the bottom shell (33) to form an air chamber (3a). The heating component (31) is installed inside the bottom shell (33). The air guiding component (32) includes a first driving component (321) and a fan blade component (322). The first driving component (321) is installed on the cover (34), and the fan blade component (322) is installed on the output shaft of the first driving component (321). Alternatively, the heating component (31) is installed inside the bottom shell (33), and the air guiding component (32) is connected to the air chamber (3a) and the vent (21c) through the air guiding channel (6).

4. The coffee processing system as described in claim 2, characterized in that: The coffee processing system also includes a water supply device (4) for supplying water, and the tamping head (22) is provided with a water inlet channel (22a) connected to the water supply device (4). The heating component (31) is equipped with a heating channel (311), and the water inlet channel (22a) is connected to the water supply device (4) through the heating channel (311).

5. The coffee processing system according to any one of claims 1-4, characterized in that: A second sealing part (24) is provided between the side wall of the first space (21) and the outer side wall of the powder pressing head (22). The second sealing part (24) is located above the first sealing part (23). The second sealing part (24) is installed on the side wall of the first space (21) or on the powder pressing head (22). When the powder pressing head (22) is in the first position (100), a second space (21a) is formed around and below the vent (21c) and is sealed at the top and communicates with the grinding chamber (1a) on the side. When the powder pressing head (22) is in the second position (200), the vent (21c) is located between the first sealing part (23) and the second sealing part (24). The inner walls of the first sealing part (23), the second sealing part (24), the powder pressing head (22), and the first space (21) are sealed together, forming an annular third space (21b) around the vent (21c). The side of the third space (21b) is connected to the grinding chamber (1a).

6. The coffee processing system according to any one of claims 2-4, characterized in that: It also includes a second drive assembly (25) for driving the powder pressing head (22) to make linear motion within the first space (21).

7. The coffee processing system as described in claim 6, characterized in that: It also includes a control unit (8), the grinding assembly (11) is connected to a third drive assembly (12), and the control unit (8) is electrically connected to the third drive assembly (12), the second drive assembly (25), the heating assembly (31) and the air guide assembly (32) respectively.

8. The coffee processing system as described in claim 5, characterized in that: The powder pressing and brewing device (2) further includes a powder box assembly (26), a powder hopper (27) and a first housing (28). The powder hopper (27) is installed between the powder box assembly (26) and the first housing (28), so that the inner cavities of the three are matched to form the first space (21). The powder hopper (27) is connected to the powder outlet end of the grinding chamber (1a). The powder box assembly (26) is detachably installed on the powder hopper (27). The vent (21c) is located on the powder hopper (27), and the first sealing part (23) is sealed to the powder box assembly (26) and the inner wall of the powder hopper (27).

9. A control method for a coffee processing system, characterized in that: The control method, applied to the coffee processing system as described in any one of claims 1-8, comprises the following steps: When the coffee processing system receives a drying control command during grinding, the tamping head (22) moves to the first position (100), the first sealing part (23) moves to the top of the vent (21c) in the first space (21), and the drying device (3) starts to let the high temperature gas flow through the vent (21c), the second space (21a), and the grinding chamber (1a) in sequence for drying; When the coffee processing system receives a drying control command while brewing coffee, the tamping head (22) moves to the second position (200), the first sealing part (23) moves within the first space (21) to below the vent (21c), separating the third space (21b) from the brewing chamber (7), and the drying device (3) is activated to allow high-temperature gas to flow sequentially through the vent (21c), the third space (21b), and the grinding chamber (1a) for drying.

10. The control method as described in claim 9, characterized in that: The control method further includes the following steps: When the coffee processing system finishes brewing, it receives a drying control command. The tamping head (22) moves to the third position (300) and its bottom is placed in the powder hopper (27). The first sealing part (23) moves in the first space (21) to below the vent (21c) to separate the third space (21b) from the brewing chamber (7). The drying device (3) is activated to allow high-temperature gas to flow sequentially through the vent (21c), the third space (21b), and the grinding chamber (1a) for drying. The third position (300) is located between the first position (100) and the second position (200).

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