Portable automatic coffee maker

Abstract

To provide a portable automatic coffee maker capable of simultaneously automatically grinding coffee beans and automatically extracting coffee. [Solution] A portable automatic coffee maker has a grinding chamber that is detachably connected to the main body of the device, and inner and outer blades for grinding coffee beans are provided in the grinding chamber. A mill motor and a reduction mechanism connected to the output shaft of the mill motor are provided in the main body of the device, one end of the rotating shaft for rotating the inner blade is connected to the reduction mechanism and the other end of the rotating shaft is connected to the inner blade. The main body of the device also has a water tank and a water pump for storing liquid, the water tank is provided with an electric heating element for heating the water tank, the suction port of the water pump is connected to the internal space of the water tank via a water supply pipe, a coffee bean storage section is provided in the grinding chamber, the inner and outer blades are located at the bottom of the coffee bean storage section, the upper end of a removable filter is connected to the bottom of the grinding chamber, and the inner and outer blades form a gap for discharging powder.

Description

[Technical Field]

[0001] The present invention relates to a portable automatic coffee maker. [Background technology]

[0002] Patent Document 1 (published January 31, 2023) discloses a portable coffee mill comprising a base, a coffee bean container, a grinding cup, and a coffee powder receptacle. The base comprises a drive motor provided therein, a gearbox connected to the drive motor, and a rotating shaft connected to the gearbox. The coffee bean container is detachably connected to the base and has a coffee bean storage chamber therein, with the rotating shaft passing through the coffee bean storage chamber. The grinding cup is detachably connected to the coffee bean container and has an outer grinding toothed wheel and an inner grinding toothed wheel therein. The lower end of the rotating shaft is connected to the inner grinding toothed wheel, with the outer grinding toothed wheel having a first meshing portion and the inner grinding toothed wheel having a second meshing portion. The inner grinding toothed wheel is rotated by the rotating shaft to grind the coffee beans between the outer grinding toothed wheel and the inner grinding toothed wheel, and the ground beans fall through a gap between the first meshing portion and the second meshing portion. A gap adjustment device is provided within the mill cup to adjust the size of the gap between the first and second meshing portions. The coffee powder receptacle is detachably connected to the bottom of the mill cup, and coffee powder that falls through the gap between the first and second meshing portions falls into the coffee powder receptacle. However, this portable coffee mill has the problem that it can only grind coffee beans and cannot extract coffee, and does not fully meet user needs, so improvements have been desired. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] China Patent Publication No. CN115644715 A Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE INVENTION The present invention aims to solve the problems in the prior art by providing a portable automatic coffee maker that can grind beans and also brew coffee. [Means for solving the problem]

[0005] A portable automatic coffee maker designed for this purpose comprises a grinding chamber detachably connected to the main body of the device, the grinding chamber being fitted with inner and outer blades for grinding coffee beans, a mill motor and a reduction mechanism connected to the output shaft of the mill motor being fitted within the main body, one end of a rotating shaft for rotating the inner blades being connected to the reduction mechanism and the other end of the rotating shaft being connected to the inner blades, the structure further comprising a water tank and a water pump for storing liquid within the main body, the suction port of the water pump communicating with the interior space of the water tank via a water supply pipe, a coffee bean storage section being provided within the grinding chamber, the inner and outer blades being located at the bottom of the coffee bean storage section, the upper end of a removable filter being connected to the bottom of the grinding chamber, a grounds discharge gap formed by the inner and outer blades communicating with the interior space of the filter, and the discharge port of the water pump also communicating with the interior of the filter.

[0006] Further, a first water flow path separated from a coffee bean storage section is provided in the machine body or the grinding chamber, and the discharge port of the water pump communicates with the internal space of the filter via the first water flow path.

[0007] In addition, a water pump is arranged near the mill motor, a water discharge pipe is provided within the main body of the equipment, and a water discharge hole is provided at the bottom of the main body of the equipment, penetrating vertically, with the discharge port of the water pump communicating with one end of the water discharge pipe, the other end of the water discharge pipe communicating with the water discharge hole, and the water discharge hole communicating with the first water flow path.

[0008] In addition, a grind adjustment dial for adjusting the particle size of the coffee powder and an adjustment cap cooperating with the grind adjustment dial are provided below the outer blade, the other end of the rotating shaft passes through the inner blade and the grind adjustment dial and then screws into the adjustment cap, the powder discharge gap is located outside the grind adjustment dial and the adjustment cap, a second water flow path arranged in an annular shape is provided at the bottom of the grinding chamber, the first water flow path is arranged vertically, and a plurality of first water inlets are arranged at circumferential intervals on the bottom end surface of the grinding chamber and penetrate vertically, the first water inlets are connected to the internal space of the filter, one side of the second water flow path is connected to the first water flow path and the other side of the second water flow path is connected to the first water inlet.

[0009] A grind adjustment dial for adjusting the particle size of the coffee powder and a flow path switching cover that cooperates with it are provided below the outer blade, and the other end of the rotating shaft passes through the inner blade and the grind adjustment dial before being screwed into the flow path switching cover, the flow path switching cover having a third water flow path that is arranged in a ring shape and is open at the top, and the flow path switching cover has two or more second water inlets that are spaced apart at the bottom and penetrate vertically, the second water inlets communicating with the internal space of the filter, one side of the third water flow path communicating with the first water flow path and the other side of the third water flow path communicating with the second water inlets, and the flow path switching cover also has a powder chute that is located below the powder discharge gap and penetrates vertically, the powder chute is located near the third water flow path and communicates with the internal space of the filter.

[0010] In addition, an inner lid for covering the water tank is provided on the device body, an outer lid covers the inner lid, a bean receiving ring is provided in the grinding chamber for shielding the first water flow path while exposing the coffee bean storage section, and when the bean receiving ring is not in use, it is stored between the outer lid and the inner lid or on the inner lid, and / or the water tank is provided with an electric heating element for heating the water tank.

[0011] In addition, a first mounting recess with an opening facing downward is provided at one end of the device body connected to the grinding chamber, an end of the grinding chamber is fitted into the first mounting recess, and the minimum inner diameter of the part where the first mounting recess is formed is larger than the maximum outer diameter of the grinding chamber, or a mounting protrusion is provided at one end of the grinding chamber connected to the device body, and a second mounting recess with an opening facing upward is provided in the mounting protrusion, and the minimum outer diameter of the mounting protrusion is larger than the maximum outer diameter of the part of the grinding chamber excluding the mounting protrusion.

[0012] A coffee cup is placed below the filter, and an end of the device body is pressed against a support member. The support member is a first support member composed of a first support plate located at an upper part, a second support plate located at a lower part, and at least one intermediate connecting member located in the middle, the top of the intermediate connecting member is connected to the first support plate, the bottom of the intermediate connecting member is connected to the second support plate, a first positioning hole is formed in the first support plate, one ends of the filter and the grinding chamber pass through the first positioning hole in order, and an end of the device body is pressed against the first support plate, Alternatively, the support member is a second support member having a third support plate located at an upper portion, one end of a first support leg is pivotally attached to one end of the third support plate, one end of a second support leg is pivotally attached to the other end of the third support plate, a third positioning hole is formed in the third support plate, the filter and one end of the grinding chamber pass through the third positioning hole in order, a portion where the first mounting recess is formed is pressed against the third support plate, and a coffee cup is placed between the other end of the first support leg and the other end of the second support leg, Alternatively, the support member may be a third support member having an annular shape, the coffee cup connected to one end of the third support member, the device body connected to the other end of the third support member, and the grinding chamber and the filter fitted within the third support member.

[0013] Furthermore, the coffee cup is pressed against the second support plate, or a second positioning hole is provided in the second support plate, and the minimum diameter of the second positioning hole is equal to or greater than the minimum diameter of the first positioning hole, or an air vent is provided in the side wall of the third support member.

[0014] Furthermore, the bottom of the device body is connected to the upper end of the coffee cup, and the grinding chamber and the filter are housed in the internal space of the coffee cup, or after the filter is removed, the bottom of the device body is connected to the upper end of the coffee cup, and the grinding chamber is housed in the internal space of the coffee cup. [Effects of the Invention]

[0015] According to this invention, the liquid (e.g., water) in the water tank can be heated while grinding the coffee beans, or the coffee beans can be ground first and then the water can be heated, or the water can be heated first and then the coffee beans can be ground. The heated water is then pumped into the filter by the water pump, extracting the coffee powder from the filter, ultimately obtaining a coffee extract in the coffee cup. The entire operation is simple and quick, and this invention also has the advantage of being highly portable.

[0016] This invention has a wide range of applications, being applicable not only to making hot coffee but also to making iced coffee.

[0017] Overall, the present invention has the advantage of being portable and capable of simultaneously automatically grinding and brewing coffee beans. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a first partial cross-sectional view of a first embodiment of the present invention; FIG. [Figure 2] FIG. 2 is a second partial cross-sectional view of the first embodiment of the present invention. [Figure 3] FIG. 4 is a third partial cross-sectional view of the first embodiment of the present invention, in which the first support member is omitted. [Figure 4] FIG. 2 is a first exploded view of the first embodiment of the present invention, omitting the first support member and the coffee cup. [Figure 5]FIG. 2 is a second exploded view of the first embodiment of the present invention, omitting the first support member and the coffee cup. [Figure 6] FIG. [Figure 7] 1 is a schematic diagram illustrating an operation process according to a first embodiment of the present invention; [Figure 8] 4 is a partial cross-sectional view of a second embodiment of the present invention, omitting the first support member and the coffee cup. FIG. [Figure 9] 4 is a schematic diagram illustrating a first operating process of the second embodiment of the present invention; FIG. [Figure 10] 10 is a schematic diagram illustrating a second operating process according to the second embodiment of the present invention; FIG. [Figure 11] FIG. 2 is a first partial cross-sectional view of a second embodiment of the present invention. [Figure 12] FIG. 10 is a second partial cross-sectional view of the second embodiment of the present invention. [Figure 13] FIG. 10 is a view showing an exploded view of the bean receiving ring and the grinding chamber according to the third embodiment of the present invention. [Figure 14] FIG. 3 is a three-dimensional view of a bean holder ring. [Figure 15] FIG. 10 is a diagram showing the state in which coffee beans are loaded into the grinding chamber. [Figure 16] FIG. 10 is a partial cross-sectional view of a third embodiment of the present invention. [Figure 17] FIG. 10 is a three-dimensional view of the fourth embodiment of the present invention in operation. [Figure 18] FIG. 10 is a three-dimensional view of the fourth embodiment of the present invention in a retracted state. [Figure 19] 10 is a perspective view of a first support member according to a fourth embodiment of the present invention; [Figure 20] FIG. 10 is a three-dimensional view of the fifth embodiment of the present invention in operation. [Figure 21] FIG. 4 is a three-dimensional view of a second support member. [Figure 22] FIG. 10 is a three-dimensional view of the fifth embodiment of the present invention in a retracted state. [Figure 23] FIG. 10 is a partial cross-sectional view of a sixth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] The present invention will be described in more detail below with reference to the drawings and embodiments.

[0020] (First embodiment) 1 to 23, a portable automatic coffee maker is provided with a grinding chamber 21 detachably connected to a device body 20, and an inner blade 14 and an outer blade 15 for grinding coffee beans are provided in the grinding chamber 21. The device body 20 is provided with a mill motor 10 and a speed reduction mechanism connected to the output shaft of the mill motor 10, and one end of a rotating shaft for rotating and driving the inner blade 14 is connected to the speed reduction mechanism and the other end of the rotating shaft is connected to the inner blade 14. The device body 20 is further provided with a water tank 2 and a water pump 23 for storing liquid, and the front The water tank 2 is provided with an electric heating element for heating the water tank 2, the suction port of the water pump 23 communicates with the internal space of the water tank 2 via a water supply pipe 19, a coffee bean storage section 22 is provided within the grinding chamber 21, the inner blade 14 and outer blade 15 are located at the bottom of the coffee bean storage section 22, the upper end of a removable filter 16 is connected to the bottom of the grinding chamber 21, the powder discharge gap formed by the inner blade 14 and outer blade 15 communicates with the internal space of the filter 16, and the discharge port of the water pump 23 also communicates with the internal space of the filter 16.

[0021] The inner blade 14 and outer blade 15 for grinding the coffee beans are both conventional and will not be described in detail here.

[0022] When ice water is poured into the water tank 2, iced coffee can be made using this invention.

[0023] In this embodiment, according to specific needs, the water tank 2 can be provided with an electric heating element 4 for heating the water tank 2, thereby making hot coffee.

[0024] The machine body 20 or the grinding chamber 21 is provided with a first water flow path 18 separated from the coffee bean storage section 22, and the discharge port of the water pump 23 communicates with the internal space of the filter 16 via the first water flow path 18.

[0025] The water pump 23 is located below the water tank 2 .

[0026] The water pump 23 is disposed near the mill motor 10 , and a lithium battery 11 is disposed in the device body 20 and located near the mill motor 10 .

[0027] A water discharge pipe 5 is provided within the device main body 20, and a water discharge hole 5.1 is provided at the bottom of the device main body 20, penetrating vertically. The discharge port of the water pump 23 is connected to one end of the water discharge pipe 5, and the other end of the water discharge pipe 5 is connected to the water discharge hole 5.1, which is connected to the first water flow path 18.

[0028] A grind size adjustment dial 9.1 and a corresponding adjustment cap 9.2 are provided below the outer cutter 15 to adjust the grain size of the coffee powder. The other end of the rotating shaft 12 passes through the inner cutter 14 and the grind size adjustment dial 9.1, and then screws into the adjustment cap 9.2. The powder discharge gap is located outside the grind size adjustment dial 9.1 and adjustment cap 9.2.

[0029] By adjusting the position of the adjusting cap 9.2 on the rotating shaft 12 and by interacting with the spring 13 fitted to the rotating shaft 12, the powder discharge gap can be adjusted, thereby obtaining coffee powder of different particle sizes.

[0030] The first water flow path 18 is provided in the vertical direction.

[0031] 4 and 5, three first water flow paths 18 are provided, spaced apart circumferentially. Three positioning protrusions 29 are provided on the upper part of the outer wall of the grinding chamber 21, and three corresponding positioning grooves 20.3 are provided on the inner wall of the device body 20. When a user fits the three positioning protrusions 29 into the three positioning grooves 20.3 to connect the grinding chamber 21 and the device body 20, the water discharge pipe 5 communicates with one of the three first water flow paths 18, thereby improving the ease of operation for a user to accurately align the water discharge pipe 5 with the first water flow path 18 and communicate with it.

[0032] 6 and 7, a second water flow path 24 is provided in an annular arrangement at the bottom of the grinding chamber 21, the first water flow path 18 is provided in a vertical direction, and a plurality of first water inlets 18.1 are provided at the bottom end surface of the grinding chamber 21, spaced apart in the circumferential direction and penetrating vertically, the first water inlets 18.1 communicating with the internal space of the filter 16, one side of the second water flow path 24 communicating with the first water flow path 18, and the other side of the second water flow path 24 communicating with the first water inlet 18.1.

[0033] During operation, heated water is pumped into the filter from multiple first inlets 18.1 in a circumferential direction. This avoids the channeling effect that occurs when water is pumped from a single stationary point. Channeling is a phenomenon in which coffee grounds within a channel are repeatedly extracted, resulting in over-extraction and negative flavors such as excessive bitterness, smoky odors, and woody notes. Therefore, by using circumferential water injection, the present invention can uniformly extract the coffee grounds within the filter, resulting in a richer, smoother overall flavor in the final coffee extract.

[0034] Referring to FIG. 4, one end of the device body 20 connected to the grinding chamber 21 is provided with a first mounting recess 20.2 with its opening facing downward, and the end of the grinding chamber 21 is fitted into the first mounting recess 20.2, and the minimum inner diameter of the part where the first mounting recess 20.2 is formed is larger than the maximum outer diameter of the grinding chamber 21; alternatively, one end of the grinding chamber 21 connected to the device body 20 is provided with a mounting protrusion, and the mounting protrusion is provided with a second mounting recess with its opening facing upward, and the minimum outer diameter of the mounting protrusion is larger than the maximum outer diameter of the part of the grinding chamber 21 excluding the mounting protrusion.

[0035] The bottom of the device body 20 is connected to the upper end of the coffee cup 17, and the grinding chamber 21 and the filter 16 are accommodated in the internal space of the coffee cup 17, or after the filter 16 is removed, the bottom of the device body 20 is connected to the upper end of the coffee cup 17, and the grinding chamber 21 is accommodated in the internal space of the coffee cup 17.

[0036] (Second embodiment) When a second water passage 24 arranged annularly is provided at the bottom of the grinding chamber 21, the inner cutter 14 and the outer cutter 15 are disposed inside the second water passage 24. In order to ensure the strength of the grinding chamber 21, it is necessary to increase the thickness of the wall located between the outside of the outer cutter 15 and the second water passage 24, which results in an increase in the overall volume of the grinding chamber 21. Since the present invention has a portable structure, the following structure can be adopted to avoid inconvenience caused by excessive volume.

[0037] Referring to Figures 8 to 12, in this embodiment, a grind adjustment dial 9.1 for adjusting the particle size of the coffee powder and a flow path switching cover 25 associated therewith are provided below the outer cutter 15, and the other end of the rotating shaft 12 passes through the inner cutter 14 and the grind adjustment dial 9.1, and then screws into the flow path switching cover 25.

[0038] By adjusting the position of the flow path switching cover 25 on the rotating shaft 12, the gap for powder discharge can be adjusted through interaction with the spring 13 fitted to the rotating shaft 12, thereby making it possible to obtain coffee powder of different particle sizes.

[0039] The flow path switching cover 25 has a third water flow path 34 arranged in a ring shape and open at the top, and two or more second water inlets 25.1 arranged at intervals and penetrating vertically are provided at the bottom of the flow path switching cover 25, the second water inlets 25.1 communicating with the internal space of the filter 16, one side of the third water flow path 34 communicating with the first water flow path 18 and the other side of the third water flow path 34 communicating with the second water inlet 25.1, and furthermore the flow path switching cover 25 has a powder chute 25.2 located below the powder discharge gap and penetrating vertically, the powder chute 25.2 being located near the third water flow path 34 and communicating with the internal space of the filter 16.

[0040] During operation, the flow path switching cover 25 is driven by the rotary shaft 12 to rotate gently in the circumferential direction, and the water flowing out of the second water inlet 25.1 also moves in the circumferential direction. This allows for circumferential water injection, and since two or more second water inlet ports 25.1 are spaced apart, it is possible to inject water uniformly in the circumferential direction.

[0041] (Third embodiment) 13 to 16, in order to prevent coffee beans from entering the first water flow path 18 and to reduce the burden on the user, an inner lid 28 for covering the water tank is provided on the device main body 20, an outer lid 1 covers the inner lid 28, and a bean receiving ring 26 is provided in the grinding chamber 21 to expose the coffee bean storage section 22 while shielding the first water flow path 18, and when the bean receiving ring 26 is not in use, it is stored between the outer lid 1 and the inner lid 28 or on the inner lid 28.

[0042] For other parts not described, please refer to the second embodiment, and the explanation will be omitted here.

[0043] (Fourth embodiment) 17 to 19, a coffee cup 17 is placed below the filter 16, and the end of the device body 20 is pressed against a support member.

[0044] In this embodiment, the support member is a first support member 30.

[0045] The first support member 30 is composed of a first support plate 30.1 located at the top, a second support plate 30.2 located at the bottom, and at least one intermediate connecting member 30.3 located in the middle. The top of the intermediate connecting member 30.3 is connected to the first support plate 30.1, and the bottom of the intermediate connecting member 30.3 is connected to the second support plate 30.2. The first support plate 30.1 is provided with a first positioning hole 30.1.1, through which the filter 16 and one end of the grinding chamber 21 pass, respectively. The end of the device body 20 is pressed against the first support plate 30.1, and the coffee cup 17 is located below the filter 16.

[0046] The coffee cup 17 is pressed against the second support plate 30.2, or the second support plate 30.2 is provided with a second positioning hole 30.2.1, the minimum diameter of which is equal to or greater than the minimum diameter of the first positioning hole 30.1.1.

[0047] If the minimum diameter of the second positioning hole 30.2.1 is equal to or greater than the minimum diameter of the first positioning hole 30.1.1, the minimum diameter of the second positioning hole 30.2.1 may be greater than the diameter of the cup body of the coffee cup 17. As a result, the situation shown in Figure 16 may occur.

[0048] For other parts not described, please refer to the third embodiment, and the explanation will be omitted here.

[0049] (Fifth embodiment) 20 to 22, in this embodiment, the support member is a second support member 40. As shown in FIG.

[0050] The second support member 40 includes a third support plate 40.1 located at the top. One end of a first support leg 40.2 is pivotally attached to one end of the third support plate 40.1, and one end of a second support leg 40.3 is pivotally attached to the other end of the third support plate 40.1. The third support plate 40.1 is provided with a third positioning hole 40.1.1, through which the filter 16 and one end of the grinding chamber 21 pass, respectively. The portion where the first mounting recess 20.2 is formed is pressed against the third support plate 40.1, and the coffee cup 17 is located below the filter 16 and between the other end of the first support leg 40.2 and the other end of the second support leg.

[0051] The length of the first support leg 40.2 and the second support leg 40.3 is greater than the sum of the heights of the grinding chamber 21, the filter 16 and the coffee cup 17, respectively.

[0052] For other parts not described, please refer to the third embodiment, and the explanation will be omitted here.

[0053] (Sixth embodiment) Referring to FIG. 23, in this embodiment, the support member is a third support member 50.

[0054] The third support member 50 is annular, the coffee cup 17 is connected to one end of the third support member 50, the device body 20 is connected to the other end of the third support member 50, the coffee cup 17 is located below the filter 16, and the grinding chamber 21 and the filter 16 are fitted within the third support member 50.

[0055] For better use, the third support member 50 has ventilation holes on its sidewall.

[0056] For other parts not described, please refer to the third embodiment, and the explanation will be omitted here.

[0057] In describing the present invention, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like, which indicate orientations or positional relationships, are based on the orientations or positional relationships shown in the drawings and are intended solely to facilitate explanation of the present invention. Therefore, they do not indicate or suggest that the devices or components shown necessarily have a specific orientation or are configured and operated in a specific orientation, and should not be construed as limiting the specific scope of protection of the present invention. Furthermore, the terms "first" and "second" are used solely for convenience of description and do not indicate or suggest relative importance, nor should they be construed as implying the number of technical features shown.

[0058] The above has described the basic principles, main features, and advantages of the present invention. The present invention is not limited to the above-described embodiments, and these embodiments and the contents described herein are intended to illustrate the principles of the present invention. Various modifications and improvements may be made to the present invention without departing from the spirit and scope of the present invention. It is obvious to those skilled in the art that all such modifications and improvements are within the scope of the present invention. The scope of protection of the present invention is defined by the appended utility model claims and their equivalents. [Explanation of symbols]

[0059] 1.......... Outer lid 2. Water tank 3..........liquid 4. Electric heating element 5.......... Water pipe 5.1.......... Water outlet 6. Electrical control board 7. No. 1 bearing 8. Second bearing 9.1............Grind adjustment dial 9.2............Adjustment cap 10.............. Mill motor 11.............Lithium battery 12.............. Rotation axis 13.............Spring 14..............Inner blade 15.......... Outer blade 16..............Filter 16.1.......... Coffee powder 17.............Coffee cup 18..............First water channel 18.1..........1st water inlet 19.... Water supply pipe 20..............Device body 20.1..........Operation panel 20.1.1...... Button 20.2..........First mounting recess 20.3.......... Locating groove 21..............Crushing chamber 22..............Coffee bean storage section 23..............Water pump 24.............. Second water flow path 25..............Flow path switching cover 25.1..........2nd water inlet 25.2.......... Powder chute 26..............Bean holder ring 26.1..........Relief hole 27.............Coffee bean spoon 28..............Inner lid 29.............. Positioning protrusion 30..............First support member 30.1..........1st support plate 30.1.1...... First positioning hole 30.2..........Second support plate 30.2.1...... Second positioning hole 30.3..........Intermediate connecting member 34..............Third water channel 40..............Second support member 40.1..........Third support plate 40.1.1......Third positioning hole 40.2..........1st support leg 40.3..........Second support leg 50..............Third support member

Claims

1. A portable automatic coffee maker comprising a grinding chamber (21) detachably connected to a machine body (20), in which an inner blade (14) and an outer blade (15) for grinding coffee beans are provided, a mill motor (10) and a reduction mechanism connected to a rotating shaft (12) of the mill motor (10) are provided in the machine body (20), one end of the rotating shaft (12) for rotating and driving the inner blade (14) is connected to the reduction mechanism, and the other end of the rotating shaft (12) is connected to the inner blade (14), and a water tank (2) and a water pump (23) for storing liquid are further provided in the machine body (20). the suction port of the water pump (23) communicates with the interior space of the water tank (2) via a water supply pipe (19); a coffee bean storage section (22) is provided within the grinding chamber (21); the inner blade (14) and the outer blade (15) are located at the bottom of the coffee bean storage section (22); the upper end of a removable filter (16) is connected to the bottom of the grinding chamber (21); a powder discharge gap formed by the inner blade (14) and the outer blade (15) communicates with the interior space of the filter (16); and the discharge port of the water pump (23) also communicates with the inside of the filter (16).

2. 2. The portable automatic coffee maker according to claim 1, wherein the machine body (20) or the grinding chamber (21) is provided with a first water flow path (18) separated from the coffee bean storage section (22), and the outlet of the water pump (23) communicates with the internal space of the filter (16) via the first water flow path (18).

3. 3. The portable automatic coffee maker according to claim 2, wherein the water pump (23) is disposed near the mill motor (10), a water discharge pipe (5) is provided within the main body (20), a water discharge hole (5.1) is provided in the bottom of the main body (20) penetrating vertically, the outlet of the water pump (23) communicates with one end of the water discharge pipe (5), the other end of the water discharge pipe (5) communicates with the water discharge hole (5.1), and the water discharge hole (5.1) communicates with the first water flow path (18).

4. A grind size adjusting dial (9.1) for adjusting the size of the coffee powder and an adjusting cap (9.2) associated therewith are provided below the outer cutter (15), the other end of the rotating shaft (12) passes through the inner cutter (14) and the grind size adjusting dial (9.1) and then screws into the adjusting cap (9.2), and the powder discharge gap is located outside the grind size adjusting dial (9.1) and the adjusting cap (9.2); A second water flow path (24) is provided in an annular arrangement at the bottom of the grinding chamber (21), the first water flow path (18) is provided in a vertical direction, and a plurality of first water inlets (18.1) are provided at the bottom end surface of the grinding chamber (21) that are spaced apart in the circumferential direction and penetrate vertically, the first water inlets (18.1) communicating with the internal space of the filter (16), one side of the second water flow path (24) communicating with the first water flow path (18), and the other side of the second water flow path (24) communicating with the first water inlet (18.1).

3. The portable automatic coffee maker according to claim 2.

5. The grind size adjusting dial (9.1) for adjusting the grain size of the coffee powder and the flow path switching cover (25) cooperating therewith are provided below the outer cutter (15), and the other end of the rotating shaft (12) passes through the inner cutter (14) and the grind size adjusting dial (9.1) and is then screwed into the flow path switching cover (25); The flow path switching cover (25) is formed with a third water flow path (34) that is arranged in a ring shape and has an open top, and the bottom of the flow path switching cover (25) is provided with two or more second water inlets (25.1) that are spaced apart and penetrate vertically, and the second water inlets (25.1) communicate with the internal space of the filter (16), one side of the third water flow path (34) communicates with the first water flow path (18), and the other side of the third water flow path (34) communicates with the second water inlet (25.1), and further the flow path switching cover (25) is provided with a powder chute (25.2) that is located below the powder discharge gap and penetrates vertically, and the powder chute (25.2) is located near the third water flow path (34) and communicates with the internal space of the filter (16).

3. The portable automatic coffee maker according to claim 2.

6. 3. The portable automatic coffee maker according to claim 2, wherein an inner lid (28) for covering the water tank (2) is provided on the device body (20), an outer lid (1) covers the inner lid (28), the grinding chamber (21) is provided with a bean receiving ring (26) for shielding the first water flow path (18) while exposing the coffee bean storage section (22), the bean receiving ring (26) being stored between the outer lid (1) and the inner lid (28) or on the inner lid (28) when not in use, and / or the water tank (2) is provided with an electric heating element (4) for heating the water tank (2).

7. 2. The portable automatic coffee maker according to claim 1, wherein the device body (20) has a first mounting recess (20.2) with an opening facing downward at one end thereof connected to the grinding chamber (21), the end of the grinding chamber (21) is fitted into the first mounting recess (20.2), and the minimum inner diameter of the portion where the first mounting recess (20.2) is formed is larger than the maximum outer diameter of the grinding chamber (21); or the grinding chamber (21) has a mounting protrusion (21) at one end thereof connected to the device body (20), and the mounting protrusion has a second mounting recess with an opening facing upward at the mounting protrusion, and the minimum outer diameter of the mounting protrusion is larger than the maximum outer diameter of the portion of the grinding chamber (21) excluding the mounting protrusion.

8. A coffee cup (17) is placed below the filter (16), and an end of the device body (20) is pressed against a support member. The support member is a first support member (30) consisting of a first support plate (30.1) located at an upper part, a second support plate (30.2) located at a lower part, and at least one intermediate connecting member (30.3) located in between, the top of the intermediate connecting member (30.3) is connected to the first support plate (30.1), and the bottom of the intermediate connecting member (30.3) is connected to the second support plate (30.2), the first support plate (30.1) is provided with a first positioning hole (30.1.1), one ends of the filter (16) and the grinding chamber (21) pass through the first positioning hole (30.1.1), and an end of the device body (20) is pressed against the first support plate (30.1), Alternatively, the support member is a second support member (40) having a third support plate (40.1) located at the top, one end of a first support leg (40.2) is pivotally attached to one end of the third support plate (40.1), one end of a second support leg (40.3) is pivotally attached to the other end of the third support plate (40.1), the third support plate (40.1) is provided with a third positioning hole (40.1.1), and one ends of the filter (16) and the grinding chamber (21) are fitted through the third positioning hole (40.1.1). the end of the device body (20) is pressed against the third support plate (40.1), the coffee cup (17) is located below the filter (16) and between the other end of the first support leg (40.2) and the other end of the second support leg (40.3), the lengths of the first support leg (40.2) and the second support leg (40.3) being greater than the sum of the heights of the grinding chamber (21), the filter (16) and the coffee cup (17), respectively; Alternatively, the support member is a third support member (50) having an annular shape, the coffee cup (17) is connected to one end of the third support member (50), the device body (20) is connected to the other end of the third support member (50), and the grinding chamber (21) and the filter (16) are fitted inside the third support member (50).

8. A portable automatic coffee maker according to claim 7.

9. 9. The portable automatic coffee maker according to claim 8, wherein the coffee cup (17) is pressed against the second support plate (30.2), or the second support plate (30.2) is provided with a second positioning hole (30.2.1) whose minimum diameter is equal to or greater than the minimum diameter of the first positioning hole (30.1.1), or wherein an air vent is provided in the side wall of the third support member (50).

10. 2. The portable automatic coffee maker according to claim 1, wherein the bottom of the device body (20) is connected to the upper end of the coffee cup (17), and the grinding chamber (21) and the filter (16) are housed in the internal space of the coffee cup (17), or, after the filter (16) is removed, the bottom of the device body (20) is connected to the upper end of the coffee cup (17), and the grinding chamber (21) is housed in the internal space of the coffee cup (17).

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