Coffee brewing container and coffee brew device using said brewing container

Abstract

A coffee brewing container (2) and a coffee brew device using said brewing container (2). The coffee brewing container (2) comprises a first container body (21), a second container body (22), and a discharge mechanism, wherein the second container body (22) is at least partially located below the first container body (21). The coffee brewing container (2) further comprises an adjustment mechanism, wherein the adjustment mechanism comprises: a first adjustment member (231), rotatably supported between the first container body (21) and the second container body (22); and a second adjustment member (232), at least partially located in the first adjustment member (231) and threadedly connected to the first adjustment member (231), so as to perform vertical lifting / lowering movement when the first adjustment member (231) rotates. A first flow hole (2611) and second flow holes (2326) are directly or indirectly formed in the second adjustment member (232), and the flow area of each second flow hole (2326) is greater than the flow area of the first flow hole (2611). The lifting / lowering movement of the second adjustment member (232) enables the brewing container (2) to be in the following two states: a first state: the first container body (21), the first flow hole (2611), and the discharge mechanism are in fluid communication; and a second state: the first container body (21), the second flow holes (2326), and the discharge mechanism are in fluid communication.

Description

A coffee brewing box and a coffee brewing device using the brewing box. Technical Field

[0001] This invention relates to beverage brewing devices, particularly a coffee brewing box, and a coffee brewing device using the coffee brewing box. Background Technology

[0002] Small coffee machines typically consist of an upper body, a lower body, a brewing chamber, and a heating element and a water pump located within the lower body. The water pump is connected to the heating element to pressurize the heated water into the brewing chamber. The coffee grounds in the brewing chamber are mixed with the hot water and then flow out from the outlet at the bottom of the brewing chamber for drinking.

[0003] Existing coffee machines, such as the one disclosed in Chinese Patent Application No. 202221117559.9, include: a lower body; an upper body disposed on the lower body and having an extraction box for holding the substance to be extracted; the lower body is provided with a water storage chamber, a water pump, a heating unit, and a water supply pipe, the bottom of the water storage chamber is connected to the inlet of the water pump through the water supply 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 supply pipe and is connected to the top of the extraction box.

[0004] The existing coffee machines can only brew either espresso or Americano, making it difficult to meet the needs of consumers with different requirements. They have limited functionality and a poor user experience.

[0005] Summary of the Invention

[0006] The first technical problem to be solved by the present invention is to address the shortcomings of the prior art by providing a coffee brewing box that can provide different styles of coffee, has diversified functions, and improves the user experience.

[0007] The second technical problem to be solved by the present invention is to provide a coffee brewing device using the above-mentioned coffee brewing box.

[0008] The technical solution adopted by the present invention to solve the first technical problem mentioned above is as follows: a coffee brewing box, comprising a first box body, a second box body, and a dispensing mechanism for the outflow of brewed coffee liquid, wherein the first box body is used to contain coffee powder and to circulate brewing water, and the second box body is at least partially located below the first box body; characterized in that:

[0009] The coffee brewing box also includes an adjustment mechanism, which includes:

[0010] The first adjusting component is rotatably supported between the first housing and the second housing; and

[0011] The second adjusting member is at least partially located inside the first adjusting member and threadedly connected to the first adjusting member, thereby performing up-and-down movement when the first adjusting member rotates.

[0012] The second regulating member has a first flow-through hole and a second flow-through hole formed directly or indirectly, and the flow-through area of ​​the second flow-through hole is larger than the flow-through area of ​​the first flow-through hole.

[0013] The lifting and lowering movement of the second adjusting member allows the brewing box to be in the following two states:

[0014] First state: The first box, the first flow hole and the dispensing mechanism are in fluid communication to brew Italian coffee;

[0015] Second state: The first box, the second flow hole and the discharge mechanism are in fluid communication to brew American coffee.

[0016] By setting up an adjustment mechanism and using the raising and lowering of the adjustment part of the mechanism, different pressures can be generated on the coffee liquid flowing out of the first chamber, thereby changing the extraction pressure in the first chamber. This allows for brewing espresso under high pressure and Americano under normal pressure, providing different styles of coffee, diversifying functions, and improving the user experience.

[0017] Preferably, to facilitate the provision of sufficient high pressure, the flow area of ​​the first flow passage is 0.1 mm2 to 0.2 mm2.

[0018] Preferably, to facilitate the provision of atmospheric pressure, the flow area of ​​the second flow orifice is >1.8 mm2.

[0019] Furthermore, in order to achieve different fluid paths between the first box and the discharge mechanism when the second adjusting member is raised and lowered, the first adjusting member includes a first adjusting part, and the second adjusting member includes a second adjusting part that is threadedly connected to the first adjusting part inside the first adjusting part. The second adjusting part has a hollow structure with openings at both the top and bottom.

[0020] The bottom of the first box body has a first through hole. The second adjustment part has a plate, which is lower than the upper end of the second adjustment part. The plate has a second through hole, and the upper surface of the plate has a first filter screen. The first flow hole is formed on the first filter screen. The first through hole, the first flow hole and the second through hole are in corresponding positions. The second flow hole is formed on the plate. 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.

[0021] Furthermore, to prevent fluid leakage in the first state, the first housing includes a seal that surrounds the outer periphery of the first perforation. When in the first state, the bottom surface of the seal abuts against the portion of the first filter screen located around the first flow hole; the second flow hole is located outside the area enclosed by the seal.

[0022] To facilitate the installation of a rotatable first adjustment component, the first box body includes a box body main body, which includes a first part and a second part arranged vertically. The diameter of the second part is smaller than that of the first part. The first part and the second part form a space for accommodating coffee powder. The second box body is arranged at intervals below the first part.

[0023] The first adjusting member further includes an operating part and an extension part. The upper end of the operating part abuts against the bottom of the first part of the main body of the first box, and the lower end of the operating part abuts against the top of the second box. The extension part extends downward from the inner periphery of the operating part into the second box and is rotatably supported in the second box.

[0024] Furthermore, the main body of the first box also includes a third part located below the second part. The third part extends downward from the bottom surface of the second part and extends into the second adjustment part. A first through hole is provided at the bottom of the main body of the box. The first through hole penetrates the bottom surface of the second part and the third part, so that the first box and each flow hole can be fluidly connected. The third part can constrain the path of the second adjustment member, and at the same time facilitate the cooperation between the main body of the box and the second adjustment member, providing sufficient changes in lifting stroke to bring about different cooperation modes.

[0025] Furthermore, to facilitate discharging, the discharging mechanism includes a first discharging component partially placed inside the second box and a second discharging component disposed below the bottom of the second box. The first discharging component includes a discharging cylinder that receives coffee liquid from each flow hole and a column that fluidly connects the discharging cylinder and the second discharging component. The column passes through the discharging cylinder and the second box, so that part of the column is located inside the second box and the rest is located below the second box.

[0026] The technical solution adopted by the present invention to solve the second technical problem mentioned above is: a coffee brewing device, including a housing, characterized in that: the brewing box as described above is mounted on the housing by a mounting bracket.

[0027] To facilitate the installation of the brewing box and the supply of water to the brewing box, the mounting frame includes a frame body fixed to the housing and a cover body that can rotate relative to the frame body. The brewing box is installed on the frame body, and the cover body can cover or open the brewing box. The cover body is provided with a water supply port. The brewing box also includes a top cover provided on the first box body. The top cover has a water receiving hole, which corresponds to the position of the water supply port of the mounting frame. The water receiving hole is in fluid communication with the first box body.

[0028] Compared with the prior art, the advantages of the present invention are as follows: by setting an adjustment mechanism, the coffee liquid flowing out of the first chamber can be subjected to different pressures by adjusting the adjustment part of the adjustment mechanism, thereby changing the extraction pressure in the first chamber. This allows for brewing Italian coffee under high pressure and American coffee under normal pressure, providing different styles of coffee, diversifying functions, and improving the user experience. Attached Figure Description

[0029] Figure 1 is a schematic diagram of a coffee brewing device according to an embodiment of the present invention;

[0030] Figure 2 is a schematic diagram of the mounting bracket and brewing box of the coffee brewing device according to an embodiment of the present invention (closed state);

[0031] Figure 3 is a schematic diagram of the mounting bracket and brewing box of the coffee brewing device according to an embodiment of the present invention (open state);

[0032] Figure 4 is a schematic diagram of the mounting bracket of the coffee brewing device according to an embodiment of the present invention;

[0033] Figure 5 is a schematic diagram of the brewing box of the coffee brewing device according to an embodiment of the present invention (closed state);

[0034] Figure 6 is an exploded structural diagram of the brewing box of the coffee brewing device according to an embodiment of the present invention;

[0035] Figure 7 is a three-dimensional structural cross-sectional view of the brewing box of the coffee brewing device according to an embodiment of the present invention (first brewing form);

[0036] Figure 8 is a cross-sectional view of the brewing box of the coffee brewing device according to an embodiment of the present invention (first brewing mode);

[0037] Figure 9 is a cross-sectional view of the brewing box of the coffee brewing device according to an embodiment of the present invention (second brewing method);

[0038] Figure 10 is a schematic diagram of the adjustment mechanism of the brewing box of the coffee brewing device according to an embodiment of the present invention;

[0039] Figure 11 is an exploded structural diagram of the adjustment mechanism of the brewing box of the coffee brewing device according to an embodiment of the present invention;

[0040] Figure 12 is a top 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 an embodiment of the present invention;

[0041] Figure 13 is an exploded structural diagram of the brewing box of the coffee brewing device according to an embodiment of the present invention;

[0042] Figure 14 is an exploded structural diagram of the brewing box of the coffee brewing device according to an embodiment of the present invention (from a different perspective than Figure 13);

[0043] Figure 15 is a schematic diagram of the brewing box of the coffee brewing device according to an embodiment of the present invention (open state);

[0044] Figure 16 is a cross-sectional view (open state) of the brewing box of the coffee brewing device according to an embodiment of the present invention. Detailed Implementation

[0045] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions.

[0046] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Since the embodiments disclosed in this invention can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity. In addition, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0047] Referring to Figures 1 to 4, a coffee brewing device includes a housing 1 and a brewing container 2. The brewing container 2 is mounted on the housing 1 via a mounting bracket 3, and the brewing container 2 is located outside the housing 1. The housing 1 contains a water tank, a water pump, a heating device, etc., which are the same as in the prior art and will not be described in detail here.

[0048] The mounting bracket 3 includes a frame 31 fixed to the housing 1 and a cover 32 that can rotate relative to the frame 31. The brewing box 2 is mounted on the frame 31. The brewing box 2 passes through the frame 31 in the vertical direction and can be detachably installed with the frame 31. The cover 32 can cover the top of the brewing box 2, or rotate relative to the frame 31 and move away from the brewing box 2, at which point the brewing box 2 can be opened to add coffee powder. The cover 32 is provided with a water supply port 321, which is connected to the heating device (or water pump) inside the housing 1 via a water pipe. When the cover 32 is on top of the brewing box 2, the water supply port 321 is opposite to the top of the brewing box 2, thereby supplying water to the brewing box 2 through the water supply port 321.

[0049] Referring to Figures 5-12, the brewing box 2 includes a first box body 21, a second box body 22, an adjustment mechanism, a top cover 24, and a dispensing mechanism. The first box body 21 is a hollow box with an open top, used for mounting and fixing to the frame 31 of the mounting bracket 3. The first box body 21 includes a generally cylindrical box body 211 and a flange 212 formed on the outer periphery of the box body 211. The box body 211 is used to hold coffee powder, while the flange 212 is used for mounting to the frame 31 of the mounting bracket 3. The top cover 24 is disposed on the first box body 21 and can rotate relative to the first box body 21, thereby closing or opening the box body 211. The top cover 24 has a water inlet 241, which corresponds to the water supply port 321 of the mounting bracket 3. The water inlet 241 extends through both ends of the top cover 24, thus communicating with the fluid inside the box body 211. This allows hot water to enter the main body 211 of the box through the water supply port 321 and the water inlet 241.

[0050] The second box 22 is a hollow box with an open top, and is at least partially located below the first box 21. The main body 211 includes a first part 2111 and a second part 2112 arranged vertically, which are integrally formed, wherein the diameter of the second part 2112 is smaller than that of the first part 2111. The second box 22 is arranged at intervals below the first part 2111.

[0051] Referring to Figures 13-16, the top cover 24 also 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 21. The aforementioned water inlet 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 211 of the first box 21, and can cover the top of the box body 211 to close the first box 21. The powder pressing part 243 is located inside the box body 211 when the top cover 24 is closed. The connecting part 244 is located on the side of the cover plate 242, and a pivot 245 is provided on its side, which cooperates with the flange 212 of the first box 21, so that the top cover 24 can rotate relative to the first box 21 and is constrained to the first box 21.

[0052] The main body 211 of the box is used to hold coffee powder. The space for holding coffee powder 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 tamping part 243 and the bottom surface of the second part 2112.

[0053] To better achieve powder pressing and avoid uneven powder pressing caused by rotation when the top cover 24 is closed, the top cover 24 can be raised and lowered relative to the first box 21. For this purpose, the position where the flange 212 and the rotating shaft 246 are matched is formed as a sliding groove 2121. The rotating shaft 245 is movably matched with the sliding groove 2121, so that the rotating shaft 245 can both rotate relative to the flange 212 (the axis of rotation is horizontal in the use state) and be raised and lowered relative to the flange 212.

[0054] Furthermore, a connecting groove 246 is formed on the bottom surface of the connecting portion 244 of the top cover 24. A receiving groove 215 is formed in the flange 212 of the first housing 21, which is formed by the downward indentation of 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 housing 21. An elastic element 217, preferably a spring, is also provided in the receiving groove 215. It is partially wrapped around the outer periphery of the top post 216 so that the top post 216 maintains an upward tendency, thereby pushing the top cover 24 upward.

[0055] After the coffee powder is loaded, rotate the top cover 24 relative to the first container 21 to close the first container 21. Then, press the top cover 24 down to evenly compact the coffee powder in the first container 21. The top cover 24 can automatically reset under the action of the top post 216 so that the top cover 24 can be pressed down again for tamping.

[0056] Referring again to Figures 5-12, the adjustment mechanism includes a first adjustment member 231 and a second adjustment member 232. The first adjustment member 231 includes an operating part 2311 and an extension part 2312, which are integrally formed. The operating part 2311 is annular and located between the outer peripheral wall of the first box 21 and the outer peripheral wall of the second box 22. Its upper end can abut against the bottom of the first part 2111 of the main body 211 of the first box 21, and its lower end abuts against the top of the second box 22. The extension part 2312 extends downward from the inner periphery of the operating part 2311 into the second box 22 and is rotatably supported within the second box 22. To facilitate the rotation of the operating part 2311 (in the use state, the rotation axis extends vertically and is perpendicular to the rotation axis of the top cover 24), a raised rib 2315 can be provided on the outer peripheral wall of the operating part 2311 to increase the friction. An annular first adjustment part 2313 is provided inside the extension 2312, and a first thread 2314 is formed on the inner peripheral wall surface of the first adjustment part 2313.

[0057] The second adjusting member 232 includes a second adjusting portion 2321 located at least partially within the first adjusting portion 2313 and a support portion 2322 located above the first adjusting portion 2313. A second thread 2323 is formed on the outer peripheral wall of the second adjusting portion 2321. The first thread 2314 and the second thread 2323 engage, allowing the second adjusting member 232 to move up and down when the first adjusting member 231 rotates. The support portion 2322 may be formed on the top outer periphery of the second adjusting portion 2321, supporting the first adjusting portion 2313 to define the upper and lower limits of the entire second adjusting portion 232.

[0058] The second adjusting part 2321 is hollow and generally cylindrical. A plate 2324 is disposed inside the second adjusting part 2321, extending to the inner peripheral wall of the second adjusting part 2321. The two are integrally formed. The plate 2324 is lower than the upper end of the second adjusting part 2321, and preferably higher than the lower end of the second adjusting part 2321. The main body 211 of the first box 21 also includes a third part 2113 located below the second part 2112, which may be cylindrical. The third part 2113 extends downward from the bottom surface of the second part 2112 and can extend into the second adjusting part 2321. Thus, the second adjusting part 2321 surrounds the outer periphery of the third part 2113, and the third part 2113 can guide the lifting and lowering movement of the second adjusting part 2321.

[0059] The bottom of the main body 211 of the first box 21 has a first through hole 213, which penetrates the bottom surface of the second part 2112 and the third part 2113, thereby allowing fluid communication between the main body 211 and the second adjustment part 2321. Preferably, the first through hole 213 is located at the center of the bottom of the main body 211.

[0060] A second through hole 2325 is provided in the middle of the plate 2324 of the second adjusting member 232, corresponding to the position of the first through hole 213. The second through hole 2325 penetrates the plate 2324 in the height direction (vertical direction). A first filter screen 261 can be provided on the upper surface of the plate 2324. The first filter screen 261 is a single-hole filter screen, which has only one mesh hole (denoted as the first flow hole 2611). The first flow hole 2611 corresponds to the first through hole 213. The first box body 21 also includes a sealing member 214. The sealing member 214 can be surrounded on the outer periphery of the first through hole 213, and its bottom surface is exposed outside the box body 211. When it is necessary to brew espresso, the bottom surface of the seal 214 can abut against the portion of the first filter 261 located on the outer periphery of the first flow hole 2611, so as to prevent the coffee liquid from the first perforation 213 from seeping out to the outer periphery of the first filter 261, and can only flow down through the first flow hole 2611 and the second perforation 2325 into the discharge cylinder 2511 of the discharge mechanism (which will be described in detail below).

[0061] The second adjusting member 232 also has a second flow-through hole 2326 on its plate 2324, which also penetrates the plate 2324 in the vertical direction. Projected on a horizontal plane, 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, symmetrically arranged relative to the first filter screen 261, so that the coffee liquid flows downwards evenly. The flow area of ​​the second flow-through hole 2326 is larger than that of the first flow-through hole 2611, where the flow area refers to the area enclosed by the top surfaces of each hole. The preferred flow area of ​​the first flow-through hole 2611 is 0.1 mm. 2 ~0.2mm 2 More preferably, the first flow passage 2611 is a circular hole with a diameter of 0.4–0.5 mm. The flow area of ​​the second flow passage 2326 is preferably >1.8 mm². 2 More preferably, the second flow passage 2326 is a round hole with a diameter > 1.5 mm.

[0062] When the adjustment mechanism is in the first state, the second adjustment member 232 is in the upper limit position, and the seal 214 abuts against the first filter screen 261 (at this time, the support part 2322 of the second adjustment member 232 can abut against the bottom surface of the third part 2313 of the main body 211 of the first box body 21), as shown in Figure 8, the coffee liquid formed by brewing coffee powder in the first box body 21 with hot water flows into the second adjustment part 2321 through the first perforation 213. At this time, the coffee liquid can only flow through the first flow hole 2611. Since the flow area of ​​the first flow hole 2611 is small, the fluid pressure is high, and the pressure in the main body 211 of the box body increases accordingly, realizing high-pressure extraction of coffee oils. At this time, Italian coffee can be brewed. Based on the above state, by rotating the first adjusting member 231, the second adjusting member 232 can be lowered, thereby separating the first filter screen 261 from the seal 214 (see Figure 9). At this point, the coffee is in the second state. The coffee liquid formed by brewing coffee powder with hot water in the first housing 21 flows through the first perforation 213 into the second adjusting part 2321. The coffee liquid then flows through the second flow hole 2326. Due to the large flow area, the fluid is not pressurized, allowing for atmospheric pressure brewing of Americano coffee. Subsequently, if espresso is desired, the first adjusting member 231 can be rotated in the opposite direction. Thus, by setting up the adjusting mechanism, the switching between espresso and Americano coffee is achieved, meeting the user's needs for different coffees.

[0063] A second filter 262, which is a porous filter, can be provided on the bottom surface of the second part 2112 of the main body 211 of the first box 21 to filter coffee liquid.

[0064] The dispensing mechanism includes a first dispensing component 251 partially disposed within the second housing 22 and a second dispensing component 252 disposed below the bottom of the second housing 22. The first dispensing component 251 includes a hollow dispensing cylinder 2511 with an open top, which is fixedly disposed within the second housing 22. The lower end of the second adjusting part 2321 may be located inside the dispensing cylinder 2511 to allow coffee liquid to flow into the dispensing cylinder 2511, and the dispensing cylinder 2511 may also guide the lifting and lowering movement of the second adjusting part 2321. The first dispensing component 251 also includes a column 2512, which passes through the dispensing cylinder 2511 and the second housing 22, thus being partially located within the second housing 22 and partially located below the second housing 22. The column 2512 is a hollow column with an open bottom. The portion of the column 2512 above the bottom surface of the discharge cylinder 2511 has a first discharge port 2513 on its peripheral wall. The first discharge port 2513 is in fluid communication with the interior of the column 2512, allowing coffee liquid in the discharge cylinder 2511 to enter the interior of the column 2512 through the first discharge port 2513. A second discharge port 2521 is formed on the second discharge component 252, which is also in fluid communication with the interior of the column 2512. Coffee liquid flowing out of the second discharge port 2521 can be collected in a user's container, such as a coffee cup.

[0065] The term "fluid connectivity" as used in this invention refers to the spatial relationship between two components or parts (hereinafter referred to as the first part and the second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. This third party can be a fluid channel such as a pipe, channel, conduit, guide, hole, or groove, or a chamber or combination thereof that allows fluid to flow through.

Claims

1. A coffee brewing box, comprising a first box body (21), a second box body (22), and a dispensing mechanism for discharging brewed coffee liquid, wherein the first box body (21) is used to contain coffee powder and to allow the flow of 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 comprises: The first adjusting member (231) is rotatably supported between the first housing (21) and the second housing (22); and The second adjusting member (232) is at least partially located inside the first adjusting member (231) and threadedly connected to the first adjusting member (231), thereby moving up and down when the first adjusting member (231) rotates; The second adjusting member (232) has a first flow hole (2611) and a second flow hole (2326) formed directly or indirectly, and the flow area of ​​the second flow hole (2326) is larger than the flow area of ​​the first flow hole (2611). The lifting and lowering movement of the second adjusting member (232) allows the brewing box to be in the following two states: First state: The first box body (21), the first flow hole (2611) and the dispensing mechanism are in fluid communication to brew Italian coffee; Second state: The first box (21), the second flow hole (2326) and the discharge mechanism are in fluid communication to brew American coffee.

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

4. The coffee brewing box according to any one of claims 1 to 3, characterized in that: The first adjusting member (231) includes a first adjusting part (2313), and the second adjusting member (232) includes a second adjusting part (2321) that is threadedly connected to the first adjusting part (2313) inside the first adjusting part (2313). The second adjusting part (2321) has a hollow structure with openings at both the top and bottom ends. The bottom of the first box body (21) is provided with a first through hole (213). The second adjustment part (2321) is provided with a plate (2324). The plate (2324) is lower than the upper end of the second adjustment part (2321). The plate (2324) is provided with a second through hole (2325). The upper surface of the plate (2324) is provided with a first filter screen (261). The first flow hole (2611) is formed on the first filter screen (261). The first through hole (213), the first flow hole (2611) and the second through hole (2325) are in corresponding positions. The second flow hole (2326) is formed on the plate (2324). When in the first state, the first filter screen (261) abuts against the bottom of the first box body (21). When in the second state, the first filter screen (261) is separated from the first box body (21).

5. The coffee brewing box according to claim 4, characterized in that: The first housing (21) includes a seal (214) which surrounds the outer periphery of the first perforation (213). When in the first state, the bottom surface of the seal (214) abuts against the portion of the first filter screen (261) located on the outer periphery of the first flow hole (2611). The second flow hole (2326) is located outside the area surrounded by the seal (214).

6. The coffee brewing box according to any one of claims 1 to 3, characterized in that: The first box (21) includes a box body (211), which includes a first part (2111) and a second part (2112) arranged vertically. The diameter of the second part (2112) is smaller than that of the first part (2111). The first part (2111) and the second part (2112) form a space for accommodating coffee powder. The second box (22) is arranged at intervals below the first part (2111). The first adjusting member (231) further includes an operating part (2311) and an extension part (2312). The upper end of the operating part (2311) abuts against the bottom of the first part (2111) of the body body (211) of the first box body (21), and the lower end of the operating part (2311) abuts against the top of the second box body (22). The extension part (2312) extends downward from the inner periphery of the operating part (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 main body (211) of the first box (21) also includes a third part (2113) located below the second part (2112). The third part (2113) extends downward from the bottom surface of the second part (2112) and extends into the second adjustment part (2321). A first through hole (213) is provided at the bottom of the main body (211). The first through hole (213) penetrates the bottom surface of the second part (2112) and the third part (2113), so that the first box (21) and each flow hole can be fluidly connected.

8. The coffee brewing box according to any one of claims 1 to 3, characterized in that: The dispensing mechanism includes a first dispensing component (251) partially placed inside the second box (22) and a second dispensing component (252) disposed below the bottom of the second box (22). The first dispensing component (251) includes a dispensing cylinder (2511) for receiving coffee liquid from each flow hole and a column (2512) for fluid communication between the dispensing cylinder (2511) and the second dispensing component (252). The column (2512) passes through the dispensing cylinder (2511) and the second box (22), such that part of the column (2512) is located inside the second box (22) and the remainder is located below the second box (22).

9. A coffee brewing device, comprising a housing (1), characterized in that: The brewing box as described in any one of claims 1 to 8 is mounted on the housing (1) by a mounting bracket (3).

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

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