Coffee brewing box and coffee brewing device using same

Abstract

The utility model discloses a coffee brewing box and a coffee brewing device using the same, the coffee brewing box comprises a first box body, a second box body and a discharging mechanism, and at least part of the second box body is located below the first box body; the coffee brewing box further comprises an adjusting mechanism, and the adjusting mechanism comprises a first adjusting piece rotationally supported between the first box body and the second box body; at least part of the second adjusting part is located in the first adjusting part and is in threaded connection with the first adjusting part, so that the second adjusting part does up-and-down lifting motion when the first adjusting part rotates; a first overflowing hole and a second overflowing hole are directly or indirectly formed in the second adjusting part, and the overflowing area of the second overflowing hole is larger than that of the first overflowing hole; the lifting motion of the second adjusting part enables the brewing box to be in the following two states: in the first state, the first box body, the first overflowing hole and the discharging mechanism are in fluid communication; and in the second state, the first box body, the second overflowing hole and the discharging mechanism are in fluid communication.

Description

Technical Field

[0001] The utility model relates to a beverage brewing device, in particular to a coffee brewing box and a coffee brewing device applying the coffee brewing box. Background Art

[0002] Small coffee machines usually include an upper body, a lower body, a brewing box, a heating device and a water pump arranged in the lower body. The water pump is connected to the heating device to press out the water heated by the heating device and make it flow into the brewing box. The coffee powder in the brewing box is mixed with hot water and then flows out from the water outlet at the bottom of the brewing box for drinking.

[0003] For an existing coffee machine of this kind, such as a coffee machine disclosed in a Chinese patent with the application number 202221117559.9 by the present applicant, it includes: a lower body; an upper body arranged on the lower body and having an extraction box for placing an extract to be extracted; a water storage cavity, a water pump, a heating unit and a water delivery pipe are arranged in the lower body. The bottom of the water storage cavity is connected to the inlet of the water pump through the water delivery pipe, the outlet of the water pump is connected to the heating unit, and the outlet of the heating unit also extends into the cavity of the upper body through a corresponding water delivery pipe and is communicated with the top of the extraction box.

[0004] The existing coffee machine of this kind can only brew Italian coffee or American coffee singly, so it is difficult to meet the needs of consumers with different requirements, has a single function and a poor user experience. Summary of the Utility Model

[0005] The first technical problem to be solved by the utility model is to provide a coffee brewing box aiming at the deficiencies of the above-mentioned existing technology, which can provide different styles of coffee, has diversified functions and improves the user experience.

[0006] The second technical problem to be solved by the utility model is to provide a coffee brewing device applying the above coffee brewing box.

[0007] The technical solution adopted by the utility model to solve the above first technical problem is: a coffee brewing box, including a first box body, a second box body and a discharging mechanism for the brewed coffee liquid to flow out. The first box body is used for accommodating coffee powder and introducing brewing water, and at least part of the second box body is located below the first box body; characterized in that:

[0008] The coffee brewing box further includes an adjusting mechanism, and the adjusting mechanism includes:

[0009] A first adjusting member rotatably supported between the first box body and the second box body; and

[0010] A second adjusting member at least partially located inside the first adjusting member and threadedly connected to the first adjusting member, so as to move up and down when the first adjusting member rotates;

[0011] The first flow-through hole and the second flow-through hole are directly or indirectly formed in the second adjusting member, and the flow-through area of the second flow-through hole is larger than that of the first flow-through hole;

[0012] The lifting movement of the second adjusting member enables the brewing box to be in the following two states:

[0013] First state: The first box body, the first flow-through hole and the discharging mechanism are in fluid communication to brew Italian coffee;

[0014] Second state: The first box body, the second flow-through hole and the discharging mechanism are in fluid communication to brew American coffee.

[0015] By providing an adjusting mechanism and using the lifting of the adjusting part of the adjusting mechanism, different pressures are generated on the coffee liquid flowing out of the first box body, and then the extraction pressure in the first box body is changed, so that Italian coffee can be brewed under high pressure, while American coffee can be brewed under normal pressure. Different styles of coffee can be provided, with diverse functions and an improved user experience.

[0016] Preferably, for facilitating the provision of sufficient high pressure, the flow-through area of the first flow-through hole is 0.1 mm2 to 0.2 mm2.

[0017] Preferably, for facilitating the provision of normal pressure, the flow-through area of the second flow-through hole is > 1.8 mm2.

[0018] Further, to realize different fluid paths between the first box body and the discharging mechanism when the second adjusting member moves up and down, the first adjusting member includes a first adjusting part, the second adjusting member includes a second adjusting part that is threadedly connected to the first adjusting part inside the first adjusting part, and the second adjusting part is a hollow structure with openings at both the upper and lower ends;

[0019] A first perforation is formed at the bottom of the first box body. A plate member is arranged inside the second adjusting part. The plate member is lower than the upper end part of the second adjusting part. A second perforation is formed on the plate member. A first filter screen is arranged on the upper surface of the plate member. The first flow-through hole is formed on the first filter screen. The first perforation, the first flow-through hole and the second perforation are in corresponding positions. The second flow-through hole is formed on the plate member. When in the first state, the first filter screen abuts against the bottom of the first box body. When in the second state, the first filter screen is separated from the first box body.

[0020] Further, to avoid fluid leakage in the first state, the first box body includes a sealing member that surrounds the outer periphery of the first perforation. When in the first state, the bottom surface of the sealing member abuts against the part of the first filter screen located outside the first flow-through hole; the second flow-through hole is located outside the area surrounded by the sealing member.

[0021] To facilitate the setting of the rotatable first adjusting member, the first box body includes a box body main body, the box body main body includes a first part and a second part arranged vertically, the caliber of the second part is smaller than that of the first part, a space for accommodating coffee powder is formed in the first part and the second part, and the second box body is arranged at intervals below the first part;

[0022] The first adjusting member further includes an operating part and an extending part. The upper end part of the operating part abuts against the bottom of the first part of the box body main body of the first box body, the lower end part of the operating part abuts against the top of the second box body, and the extending part extends downward from the inner circumference of the operating part into the second box body and is rotatably supported in the second box body.

[0023] Further, the box body main body of the first box body further includes a third part located below the second part. The third part extends downward from the bottom surface of the second part. The third part extends into the second adjusting part. A first through hole is formed in the bottom of the box body main body. The first through hole penetrates the bottom surface of the second part and the third part, so that the first box body and each flow hole can be in fluid communication. The third part can restrict the path of the second adjusting member, and at the same time, it is convenient for the cooperation between the box body main body and the second adjusting member, providing sufficient lifting stroke changes to bring different cooperation methods.

[0024] Further, to facilitate discharging, the discharging mechanism includes a first discharging member partially placed in the second box body and a second discharging member arranged below the bottom of the second box body. The first discharging member includes a discharging cylinder for receiving coffee liquid coming from each flow hole and a column body for fluidly connecting the discharging cylinder and the second discharging member. The column body passes through the discharging cylinder and the second box body, so that part of the column body is located in the second box body and the rest is located below the second box body.

[0025] The technical solution adopted by the present utility model to solve the above second technical problem is: a coffee brewing device, including a machine shell, characterized in that: the brewing box as described above is installed on the machine shell through a mounting bracket.

[0026] To facilitate the installation of the brewing box and supply water to the brewing box, the mounting bracket includes a frame body fixed to the machine shell and a cover body capable of rotating relative to the frame body. The brewing box is installed on the frame body. The cover body can cover or open the brewing box. A water supply port is provided on the cover body. The brewing box further includes a top cover provided on the first box body. A water receiving hole is formed in the top cover. The water receiving hole corresponds to the position of the water supply port of the mounting bracket, and the water receiving hole is in fluid communication with the inside of the first box body.

[0027] Compared with the prior art, the advantages of the present utility model are as follows: By providing an adjustment mechanism, the lifting of the adjustment part of the adjustment mechanism is utilized to generate different pressures on the coffee liquid flowing out of the first box body, thereby changing the extraction pressure in the first box body, enabling the brewing of Italian coffee under high pressure and American coffee under normal pressure, being able to provide different styles of coffee, with diversified functions and improved user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the coffee brewing device according to an embodiment of the present utility model;

[0029] Figure 2 Schematic diagram of the cooperation between the mounting frame and the brewing box of the coffee brewing device according to an embodiment of the present utility model (closed state);

[0030] Figure 3 Schematic diagram of the cooperation between the mounting frame and the brewing box of the coffee brewing device according to an embodiment of the present utility model (open state);

[0031] Figure 4 Schematic diagram of the mounting frame of the coffee brewing device according to an embodiment of the present utility model;

[0032] Figure 5 Schematic diagram of the brewing box of the coffee brewing device according to an embodiment of the present utility model (closed state);

[0033] Figure 6 Exploded structure schematic diagram of the brewing box of the coffee brewing device according to an embodiment of the present utility model;

[0034] Figure 7 Stereoscopic structure sectional view of the brewing box of the coffee brewing device according to an embodiment of the present utility model (the first brewing form);

[0035] Figure 8 Sectional view of the brewing box of the coffee brewing device according to an embodiment of the present utility model (the first brewing form);

[0036] Figure 9 Sectional view of the brewing box of the coffee brewing device according to an embodiment of the present utility model (the second brewing form);

[0037] Figure 10 Schematic diagram of the adjustment mechanism of the brewing box of the coffee brewing device according to an embodiment of the present utility model;

[0038] Figure 11 Exploded structure schematic diagram of the adjustment mechanism of the brewing box of the coffee brewing device according to an embodiment of the present utility model;

[0039] Figure 12Top view of the second adjusting member and the first filter screen of the adjusting mechanism of the brewing box of the coffee brewing device according to the embodiment of the present invention;

[0040] Figure 13 Exploded structural schematic diagram of the brewing box of the coffee brewing device according to the embodiment of the present invention;

[0041] Figure 14 Exploded structural schematic diagram of the brewing box of the coffee brewing device according to the embodiment of the present invention (from Figure 13 a different perspective);

[0042] Figure 15 Schematic diagram of the brewing box of the coffee brewing device according to the embodiment of the present invention (open state);

[0043] Figure 16 Cross-sectional view of the brewing box of the coffee brewing device according to the embodiment of the present invention (open state). Detailed description of the specific implementation

[0044] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the disclosed embodiments of the present invention can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity. In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0046] Refer to Figures 1 to 4 , a coffee brewing device, including a housing 1 and a brewing box 2. The brewing box 2 is installed on the housing 1 through a mounting bracket 3, and the brewing box 2 is located outside the housing 1. A water tank, a water pump, a heating device, etc. are provided inside the housing 1, which is the same as the prior art and will not be described in detail here.

[0047] The mounting bracket 3 includes a bracket body 31 fixed to the casing 1 and a cover body 32 rotatable relative to the bracket body 31, and the brewing box 2 is mounted on the bracket body 31. The brewing box 2 passes through the bracket body 31 in the vertical direction and can be detachably mounted to the bracket body 31. The cover body 32 can cover the top of the brewing box 2 or rotate away from the brewing box 2 relative to the bracket body 31. At this time, the brewing box 2 can be opened to add coffee powder. A water supply port 321 is provided on the cover body 32, and the water supply port 321 can be communicated with a heating device (or a water pump) in the casing 1 through a water pipe. When the cover body 32 covers the top of the brewing box 2, the water supply port 321 faces the top of the brewing box 2. Thus, water can be supplied to the brewing box 2 through the water supply port 321.

[0048] See Figures 5 to 12 , the brewing box 2 includes a first box body 21, a second box body 22, an adjusting mechanism, a top cover 24 and a discharging mechanism. Among them, the first box body 21 is in the shape of a hollow box body with an open top, and it is used to be fixedly installed with the bracket body 31 of the mounting bracket 3. The first box body 21 includes a box body main body 211 that is generally cylindrical and a flange 212 formed on the outer periphery of the box body main body 211. The box body main body 211 is used to accommodate coffee powder, and the flange 212 can be used to be installed with the bracket body 31 of the mounting bracket 3. The top cover 24 is provided on the first box body 21 and can rotate relative to the first box body 21, so as to be able to close or open the box body main body 211. A water receiving hole 241 is opened on the top cover 24, and the water receiving hole 241 corresponds to the position of the water supply port 321 of the mounting bracket 3. The water receiving hole 241 penetrates through the upper and lower ends of the top cover 24 and is thus in fluid communication with the inside of the box body main body 211. Thus, hot water can enter the box body main body 211 through the water supply port 321 and the water receiving hole 241.

[0049] The second box body 22 is in the shape of a hollow box body with an open top, and at least part of the second box body 22 is located below the first box body 21. The box body main body 211 includes a first part 2111 and a second part 2112 arranged up and down, and the two are integrally formed. Among them, the diameter of the second part 2112 is smaller than that of the first part 2111. The second box body 22 is arranged at intervals below the first part 2111.

[0050] Combined with Figures 13 to 16, the top cover 24 further includes a cover plate 242, a powder pressing part 243, and a connecting part 244. The powder pressing part 243 is disposed on the bottom surface of the cover plate 242, that is, on the side of the cover plate 242 facing the inside of the first box body 21. The above-mentioned water receiving hole 241 penetrates through the cover plate 242 and the powder pressing part 243 in the height direction. The size of the cover plate 242 is larger than the top opening of the box body main body 211 of the first box body 21, so as to be able to cover the top of the box body main body 211 and then close the first box body 21. The powder pressing part 243 is located inside the box body main body 211 when the top cover 24 is closed. The connecting part 244 is located on the side surface of the cover plate 242, and a rotating shaft 245 is provided on its side surface, which cooperates with the flange 212 of the first box body 21, so that the top cover 24 is rotatably constrained on the first box body 21 relative to the first box body 21.

[0051] The box body main body 211 is used to accommodate coffee powder. The space where the coffee powder can be loaded includes a first part 2111 and a second part 2112. When the top cover 24 is closed, the coffee powder is compressed between the bottom surface of the powder pressing part 243 and the bottom surface of the second part 2112.

[0052] To better achieve powder pressing and avoid uneven powder pressing caused by rotational movement when the top cover 24 is closed, the top cover 24 can be lifted and lowered relative to the first box body 21. For this purpose, the position where the flange 212 cooperates with the rotating shaft 246 is formed as a sliding groove 2121, and the rotating shaft 245 is movably matched with the sliding groove 2121, so that the rotating shaft 245 can not only rotate relative to the flange 212 (the axis of rotation is horizontal in the use state), but also lift relative to the flange 212.

[0053] In addition, a connecting groove 246 is formed on the bottom surface of the connecting part 244 of the top cover 24. A receiving groove 215 is formed inside the flange 212 of the first box body 21. The receiving groove 215 is formed by recessing downward from the top surface of the flange 212. The position of the receiving groove 215 corresponds to the connecting groove 245. A top post 216 is provided in the receiving groove 215. The top end of the top post 216 is preferably spherical. The top end of the top post 216 is located in the connecting groove 246. The shape and size of the connecting groove 246 are adapted to the top end of the top post 216, so that the top cover 24 can rotate relative to the first box body 21. An elastic member 217 is also provided in the receiving groove 215. It is preferably a spring and is partially wound around the outer periphery of the top post 216, so that the top post 216 maintains a tendency to move upward, thereby pushing the top cover 24 upward.

[0054] After loading the coffee powder, rotate the top cover 24 relative to the first box body 21 to close the first box body 21. Then, press the top cover 24 downward to evenly compact the coffee powder in the first box body 21. The top cover 24 can be automatically reset under the action of the top post 216, so as to press the top cover 24 downward again for powder pressing operation.

[0055] See again Figures 5 to 12, The adjusting mechanism includes a first adjusting member 231 and a second adjusting member 232. Among them, the first adjusting member 231 includes an operating portion 2311 and an extending portion 2312, which are integrally formed. The operating portion 2311 is annular and is located between the outer peripheral walls of the first box body 21 and the second box body 22. Its upper end portion can abut against the bottom of the first part 2111 of the box body main body 211 of the first box body 21, and its lower end portion abuts against the top of the second box body 22. The extending portion 2312 extends downward from the inner circumference of the operating portion 2311 into the second box body 22 and is rotatably supported within the second box body 22. To facilitate the rotation of the operating portion 2311 (in the use state, the rotation axis extends vertically and is perpendicular to the rotation axis of the top cover 24), ribs 2315 can be provided on the outer peripheral wall surface of the operating portion 2311 to increase the friction force. An annular first adjusting portion 2313 is provided within the extending portion 2312, and a first thread 2314 is formed on the inner peripheral wall surface of the first adjusting portion 2313.

[0056] The second adjusting member 232 includes a second adjusting portion 2321 at least partially located within the first adjusting portion 2313 and a supporting portion 2322 located above the first adjusting portion 2313. A second thread 2323 is formed on the outer peripheral wall surface of the second adjusting portion 2321. The first thread 2314 and the second thread 2323 cooperate such that the second adjusting member 232 can move up and down when the first adjusting member 231 rotates. The supporting portion 2322 can be formed on the outer circumference of the top of the second adjusting portion 2321, and it supports above the first adjusting portion 2313 to define the upper and lower limit positions of the entire second adjusting portion 232.

[0057] The second adjusting portion 2321 is hollow and is generally cylindrical. A plate member 2324 is provided within the second adjusting portion 2321. The plate member 2324 extends to the inner peripheral wall of the second adjusting portion 2321, and the two are of an integrally formed structure. The plate member 2324 is lower than the upper end portion of the second adjusting portion 2321 and preferably higher than the lower end portion of the second adjusting portion 2321. The box body main body 211 of the first box body 21 further includes a third part 2113 located below the second part 2112, which can be cylindrical. The third part 2113 extends downward from the bottom surface of the second part 2112 and can extend into the second adjusting portion 2321. Thus, the second adjusting portion 2321 surrounds the outer circumference of the third part 2113, and the third part 2113 can play a guiding role in the up and down movement of the second adjusting portion 2321.

[0058] A first through hole 213 is provided at the bottom of the box body main body 211 of the first box body 21. The first through hole 213 penetrates the bottom surface of the second part 2112 and the third part 2113, thereby enabling fluid communication between the inside of the box body main body 211 and the inside of the second adjusting portion 2321. Preferably, the first through hole 213 is provided at the center of the bottom of the box body main body 211.

[0059] At the middle of the plate member 2324 of the second adjusting member 232, a second through hole 2325 is formed at a position corresponding to the first through hole 213. The second through hole 2325 penetrates the plate member 2324 in the height direction (up and down direction). A first filter screen 261 may be provided on the upper surface of the plate member 2324. The first filter screen 261 is a single-hole filter screen, which has only one mesh hole (denoted as the first flow-through hole 2611), and the first flow-through hole 2611 corresponds to the first through hole 213. The first box body 21 further includes a sealing member 214. The sealing member 214 can be disposed around the outer periphery of the first through hole 213, and its bottom surface is exposed outside the box body main body 211. When making Italian coffee, the bottom surface of the sealing member 214 can abut against the portion of the first filter screen 261 located outside the first flow-through hole 2611, so as to prevent the coffee liquid coming from the first through hole 213 from leaking out to the outside of the first filter screen 261, and can only flow downward through the first flow-through hole 2611 and the second through hole 2325 into the discharge cylinder 2511 (to be described in detail below) of the discharge mechanism.

[0060] A second flow-through hole 2326 is also formed on the plate member 2324 of the second adjusting member 232. The second flow-through hole 2326 also penetrates the plate member 2324 in the height direction (up and down direction). In the horizontal plane projection, the second flow-through hole 2326 is located outside the area surrounded by the sealing member 214. In this embodiment, there may be two second flow-through holes 2326, which are symmetrically arranged relative to the first filter screen 261, so that the coffee liquid flows downward evenly. The flow-through area of the second flow-through hole 2326 is larger than the flow-through area of the first flow-through hole 2611. The flow-through area refers to the area surrounded by the top surfaces of each hole. The flow-through area of the first flow-through hole 2611 is preferably 0.1mm 2 ~0.2mm 2 , more preferably, the first flow-through hole 2611 is a circular hole with a diameter of 0.4 - 0.5mm. The flow-through area of the second flow-through hole 2326 is preferably >1.8mm 2 , more preferably, the second flow-through hole 2326 is a circular hole with a diameter >1.5mm.

[0061] When the adjustment mechanism is in the first state and the second adjusting member 232 is located at the upper limit position and the sealing member 214 abuts against the first filter screen 261 (at this time, the supporting portion 2322 of the second adjusting member 232 can abut against the bottom surface of the third portion 2313 of the box body main body 211 of the first box body 21), see Figure 8, the coffee liquid formed after the coffee powder in the first box body 21 is brewed by hot water flows into the second adjusting part 2321 through the first perforation 213. At this time, the coffee liquid can only flow through the first flow-through hole 2611. Since the flow-through area of the first flow-through hole 2611 is small, the fluid pressure is large, and the pressure in the box body main body 211 increases accordingly, realizing high-pressure extraction of coffee oil. At this time, Italian coffee can be brewed. On the basis of the above state, by rotating the first adjusting part 231, the second adjusting part 232 can be lowered, and thus the first filter screen 261 is separated from the sealing part 214. See Figure 9 , at this time, it is in the second state. The coffee liquid formed after the coffee powder in the first box body 21 is brewed by hot water flows into the second adjusting part 2321 through the first perforation 213. At this time, the coffee liquid flows through the second flow-through hole 2326. Since the flow-through area is large, the fluid is not pressurized, and American coffee can be brewed at normal pressure. After that, if Italian coffee needs to be brewed again, just rotate the first adjusting part 231 in the reverse direction. Thus, through the setting of the adjusting mechanism, the switching between Italian and American coffee is realized, meeting the user's needs for different coffees.

[0062] A second filter screen 262 can be arranged on the bottom surface of the second part 2112 of the box body main body 211 of the first box body 21. It is a porous filter screen to filter the coffee liquid.

[0063] The discharging mechanism includes a first discharging part 251 partially placed in the second box body 22 and a second discharging part 252 arranged under the bottom of the second box body 22. The first discharging part 251 includes a hollow discharging cylinder 2511 with an open top, which is fixedly arranged in the second box body 22. The lower end part of the second adjusting part 2321 can be located inside the discharging cylinder 2511 so that the coffee liquid can flow into the discharging cylinder 2511, and the discharging cylinder 2511 can also play a guiding role in the lifting movement of the second adjusting part 2321. The first discharging part 251 further includes a column body 2512. The column body 2512 passes through the discharging cylinder 2511 and the second box body 22, so that part of it is located inside the second box body 22 and part of it is located under the second box body 22. The column body 2512 is a hollow column body with an open bottom. On the part of the column body 2512 above the bottom surface of the discharging cylinder 2511, a first discharging port 2513 is formed on its peripheral wall. The first discharging port 2513 is in fluid communication with the inside of the column body 2512. Thus, the coffee liquid in the discharging cylinder 2511 can enter the inside of the column body 2512 through the first discharging port 2513. A second discharging port 2521 is formed on the second discharging part 252, which is in fluid communication with the inside of the column body 2512. The coffee liquid flowing out from the second discharging port 2521 can be received in a user's container, such as a coffee cup.

[0064] As used herein, "fluid communication" refers to the spatial relationship between two components or locations (hereinafter uniformly referred to as the first location and the second location respectively), that is, fluid (gas, liquid or a mixture of both) can flow from the first location along a flow path or / and be transported to the second location. It can be a direct connection between the first location and the second location, or an indirect connection between the first location and the second location through at least one third party. The third party can be a fluid passage such as a pipe, channel, conduit, flow guide, hole, groove, etc., or a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A coffee brewing box, comprising a first box body (21), a second box body (22) and a discharge mechanism for discharging brewed coffee liquid, wherein the first box body (21) is used to contain coffee powder and to introduce brewing water, and the second box body (22) is at least partially located below the first box body (21); characterized in that: The coffee brewing box also includes an adjustment mechanism, which includes: A first adjusting member (231) is rotatably supported between the first box body (21) and the second box body (22); and A second adjusting member (232) is at least partially located inside the first adjusting member (231) and is threadedly connected to the first adjusting member (231), so as to move up and down when the first adjusting member (231) rotates; A first flow hole (2611) and a second flow hole (2326) are directly or indirectly formed in the second regulating member (232), and a flow area of ​​the second flow hole (2326) is greater than a flow area of ​​the first flow hole (2611); The lifting movement of the second adjusting member (232) enables the brewing box to be in the following two states: First state: the first box body (21), the first flow hole (2611) and the discharge mechanism are in fluid communication to brew Italian coffee; Second state: the first box body (21), the second flow hole (2326) and the discharge mechanism are fluidically connected to brew American coffee.

2. The coffee brewing box according to claim 1, characterized in that: The flow area of ​​the first flow hole (2611) is 0.1 mm 2 ~0.2mm 2 .

3. The coffee brewing box according to claim 1, characterized in that: The flow area of ​​the second flow hole (2326) is >1.8 mm 2 .

4. The coffee brewing box according to any one of claims 1 to 3, characterized in that: The first adjusting member (231) comprises a first adjusting portion (2313), the second adjusting member (232) comprises a second adjusting portion (2321) threadedly connected to the first adjusting portion (2313) on the inner side of the first adjusting portion (2313), and the second adjusting portion (2321) is a hollow structure with openings at upper and lower ends; A first through hole (213) is provided at the bottom of the first box body (21), a plate (2324) is arranged in the second adjusting portion (2321), the plate (2324) is lower than the upper end of the second adjusting portion (2321), a second through hole (2325) is provided on the plate (2324), a first filter (261) is provided on the upper surface of the plate (2324), the first flow hole (2611) is formed on the first filter (261), the first through hole (213), the first flow hole (2611) and the second through hole (2325) are located correspondingly, the second flow hole (2326) is formed on the plate (2324), when in the first state, the first filter (261) is in contact with the bottom of the first box body (21), and when in the second state, the first filter (261) is separated from the first box body (21).

5. The coffee brewing box according to claim 4, characterized in that: The first box body (21) includes a sealing member (214), and the sealing member (214) is arranged around the outer periphery of the first through hole (213). When in the first state, the bottom surface of the sealing member (214) abuts against the portion of the first filter screen (261) located around the first flow hole (2611); the second flow hole (2326) is located outside the area surrounded by the sealing member (214).

6. The coffee brewing box according to any one of claims 1 to 3, characterized in that: The first box body (21) comprises a box body main body (211), the box body main body (211) comprises a first part (2111) and a second part (2112) arranged up and down, the second part (2112) has a smaller diameter than the first part (2111), a space for accommodating coffee powder is formed in the first part (2111) and the second part (2112), and the second box body (22) is arranged below the first part (2111) at an interval; The first adjusting member (231) further comprises an operating portion (2311) and an extending portion (2312), wherein the upper end portion of the operating portion (2311) abuts against the bottom of the first portion (2111) of the box body (21) of the first box body (21), and the lower end portion of the operating portion (2311) abuts against the top of the second box body (22), and the extending portion (2312) extends downward from the inner periphery of the operating portion (2311) into the second box body (22) and is rotatably supported in the second box body (22).

7. The coffee brewing box according to claim 6, characterized in that: The box body (211) of the first box body (21) further includes a third part (2113) located below the second part (2112), wherein the third part (2113) extends downward from the bottom surface of the second part (2112), and the third part (2113) extends into the second adjustment portion (2321). A first through hole (213) is provided at the bottom of the box body (211), and the first through hole (213) passes through the bottom surface of the second part (2112) and the third part (2113), thereby enabling the first box body (21) and each flow hole to be fluidically connected.

8. The coffee brewing box according to any one of claims 1 to 3, characterized in that: The discharging mechanism includes a first discharging member (251) partially disposed in the second box body (22) and a second discharging member (252) disposed under the bottom of the second box body (22), the first discharging member (251) including a discharging cylinder (2511) for receiving coffee liquid from each flow hole and a column (2512) for fluidly connecting the discharging cylinder (2511) and the second discharging member (252), the column (2512) passing through the discharging cylinder (2511) and the second box body (22), so that a portion of the column (2512) is located in the second box body (22) and the rest of the column (2512) is located below the second box body (22).

9. A coffee brewing device, comprising a housing (1), characterized in that: The brewing box according to any one of claims 1 to 8 is mounted on the casing (1) via a mounting frame (3).

10. The coffee brewing device according to claim 9, characterized in that: The mounting frame (3) comprises a frame body (31) fixed to the housing (1) and a cover body (32) rotatable relative to the frame body (31); the brewing box is mounted on the frame body (31); the cover body (32) can cover or open the brewing box; a water supply port (321) is provided on the cover body (32); the brewing box further comprises a top cover (24) arranged on the first box body (21); a water receiving hole (241) is provided on the top cover (24); the water receiving hole (241) corresponds to the position of the water supply port (321) of the mounting frame (3); and the water receiving hole (241) is in communication with the fluid in the first box body (21).

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