Portable automatic coffee machine

Abstract

A portable automatic coffee machine comprises a grinding bin detachably connected with a machine body, an inner cutter and an outer cutter which are used for grinding coffee beans are arranged in the grinding bin, and a grinding motor and a speed reducing mechanism connected with an output shaft of the grinding motor are arranged in the machine body. One end of a rotating shaft used for driving the inner cutter to rotate is connected with the speed reducing mechanism, the other end of the rotating shaft is connected with the inner cutter, a water bin used for containing liquid and a water pump are further arranged in the machine body, and an electric heating element used for heating the water bin is arranged on the water bin. An inlet of the water pump is communicated with an inner cavity of the water bin through a water inlet pipe, a coffee bean storage cavity is formed in the grinding bin, the inner cutter and the outer cutter are located at the bottom of the coffee bean storage cavity, the top of the detachable filter screen is connected with the bottom of the grinding bin, and a powder outlet gap is jointly defined by the inner cutter and the outer cutter. The portable coffee maker has the advantages of being capable of automatically grinding beans and automatically brewing coffee on the premise of being portable.

Description

Technical Field

[0001] The utility model relates to a portable automatic coffee machine. Background Art

[0002] Chinese Patent Document No. CN 115644715 A discloses a portable coffee bean grinder on January 31, 2023, which includes a machine base. The machine base includes a driving motor arranged in the machine base, a gear reduction box connected to the driving motor, and a rotating shaft connected to the gear reduction box; a coffee bean holding cup, the coffee bean holding cup is detachably connected to the machine base, a coffee bean holding cavity is arranged in the coffee bean holding cup, and the rotating shaft passes through the coffee bean holding cavity; a coffee grinding cup, the coffee grinding cup is detachably connected to the coffee bean holding cup, an outer grinding wheel and an inner grinding wheel are arranged in the coffee grinding cup, the lower end of the rotating shaft is connected to the inner grinding wheel, a first meshing part is arranged on the outer grinding wheel, a second meshing part is arranged on the inner grinding wheel, the inner grinding wheel rotates driven by the rotating shaft to crush the coffee beans between the outer grinding wheel and the inner grinding wheel and then fall from the gap between the first meshing part and the second meshing part, and a gap adjusting device for adjusting the size of the gap between the first meshing part and the second meshing part is arranged in the coffee grinding cup; a coffee powder cup, the coffee powder cup is detachably connected below the coffee grinding cup, and the coffee powder falling from the gap between the first meshing part and the second meshing part falls into the coffee powder cup. This portable coffee bean grinder can only grind coffee beans and cannot brew coffee, which makes users less satisfied, so it needs to be improved. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a portable automatic coffee machine that can both grind beans and brew coffee to overcome the deficiencies in the prior art.

[0004] A portable automatic coffee machine designed according to this purpose includes a grinding chamber detachably connected to the machine body. An inner knife and an outer knife for grinding coffee beans are arranged in the grinding chamber. A grinding motor and a speed reduction mechanism connected to the output shaft of the grinding motor are arranged in the machine body. One end of a rotating shaft for driving the inner knife to rotate is connected to the speed reduction mechanism, and the other end of the rotating shaft is connected to the inner knife. Its structural feature is that a water storage chamber for containing liquid and a water pump are also arranged in the machine body. The inlet of the water pump is connected to the inner cavity of the water storage chamber through a water inlet pipe. A coffee bean storage cavity is arranged in the grinding chamber. The inner knife and the outer knife are located at the bottom of the coffee bean storage cavity. The top of a detachable filter screen is connected to the bottom of the grinding chamber. The powder outlet gap jointly formed by the inner knife and the outer knife is connected to the inner cavity of the filter screen. The outlet of the water pump is connected to the inner cavity of the filter screen.

[0005] Further, a first water flow channel separated from the coffee bean storage cavity is provided on the body or the grinding chamber, and the outlet of the water pump is communicated with the inner cavity of the filter screen through the first water flow channel.

[0006] Further, the water pump is arranged beside the grinding motor. A water outlet pipe is arranged inside the body. A water outlet hole penetrating up and down is provided at the bottom of the body. The outlet of the water pump is communicated with one end of the water outlet pipe, the other end of the water outlet pipe is communicated with the water outlet hole, and the water outlet hole is communicated with the first water flow channel.

[0007] Further, a scale disk for adjusting the particle size of the coffee powder and a shifting cover used in cooperation therewith are arranged below the outer knife. The other end of the rotating shaft passes through the inner knife and the scale disk and is threadedly connected with the shifting cover. The powder discharging gap is located outside the scale disk and the shifting cover. A second water flow channel arranged in a ring shape is further provided at the bottom of the grinding chamber. The first water flow channel is arranged vertically. A plurality of first water injection ports which are arranged at circumferential intervals and penetrate up and down are provided on the bottom end surface of the grinding chamber. The first water injection ports are communicated with the inner cavity of the filter screen. One side of the second water flow channel is communicated with the first water flow channel, and the other side of the second water flow channel is communicated with the first water injection port.

[0008] Further, a scale disk for adjusting the particle size of the coffee powder and a flow diversion cover used in cooperation therewith are arranged below the outer knife. The other end of the rotating shaft passes through the inner knife and the scale disk and is threadedly connected with the flow diversion cover. A third water flow channel which is arranged in a ring shape and has an upper opening is provided on the flow diversion cover. Two or more second water injection ports which are arranged at intervals and penetrate up and down are provided at the bottom of the flow diversion cover. The second water injection ports are communicated with the inner cavity of the filter screen. One side of the third water flow channel is communicated with the first water flow channel, and the other side of the third water flow channel is communicated with the second water injection port. A powder passing channel which penetrates up and down and is located below the powder discharging gap is provided on the flow diversion cover. The powder passing channel is located beside the third water flow channel and is communicated with the inner cavity of the filter screen.

[0009] Further, an inner cover for covering the water storage tank is provided on the body, and an outer cover is covered on the inner cover. A bean receiving ring for shielding the first water flow channel and exposing the coffee bean storage cavity is provided on the grinding chamber. When the bean receiving ring is not in use, the bean receiving ring is arranged between the outer cover and the inner cover or on the inner cover; and / or, an electric heating element for heating the water storage tank is provided on the water storage tank.

[0010] Further, one end of the machine body connected to the grinding chamber is provided with a first assembly groove with an opening facing downward, and the end of the grinding chamber is inserted into the first assembly groove. The minimum diameter of the part where the first assembly groove is located is greater than the maximum diameter of the grinding chamber; alternatively, one end of the grinding chamber connected to the machine body is provided with an assembly boss, and the assembly boss is provided with a second assembly groove with an opening facing upward. The minimum outer diameter of the assembly boss is greater than the maximum outer diameter of the remaining part of the grinding chamber except the assembly boss.

[0011] Further, a drinking cup is arranged below the filter screen, and the end of the machine body is crimped on the support member;

[0012] Wherein, the support member is a first support member. The first support member includes a first support plate located in the upper part, a second support plate located in the lower part, and at least one intermediate connecting member located in the middle part. 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 arranged on the first support plate, one ends of the filter screen and the grinding chamber sequentially pass through the first positioning hole, and the end of the machine body is crimped on the first support plate;

[0013] Alternatively, the support member is a second support member. The second support member includes a third support plate located in the upper part. One end of a first support leg is hinged to one end of the third support plate, and one end of a second support leg is hinged to the other end of the third support plate. A third positioning hole is arranged on the third support plate, one ends of the filter screen and the grinding chamber sequentially pass through the third positioning hole, the part where the first assembly groove is located is crimped on the third support plate, and the drinking cup is located between the other ends of the first support leg and the second support leg;

[0014] Alternatively, the support member is a third support member. The third support member is annular. The drinking cup is connected to one end of the third support member, the machine body is connected to the other end of the third support member, and the grinding chamber and the filter screen are sleeved inside the third support member

[0015] Further, the drinking cup is crimped on the second support plate; alternatively, a second positioning hole is arranged on the second support plate, and the minimum diameter of the second positioning hole is greater than or equal to the minimum diameter of the first positioning hole; alternatively, ventilation holes are arranged on the side wall of the third support member.

[0016] Further, the bottom of the machine body is connected to the top of the drinking cup, and the grinding chamber and the filter screen are located inside the inner cavity of the drinking cup; alternatively, after the filter screen is removed, the bottom of the machine body is connected to the top of the drinking cup, and the grinding chamber is located inside the inner cavity of the drinking cup.

[0017] After adopting the above technical solution, the utility model can heat the liquid in the water tank, such as water, while grinding coffee beans, or can grind coffee beans first and then heat water, or can heat water first and then grind coffee beans. Then, under the action of the water pump, the heated water is injected into the filter screen to extract the coffee powder in the filter screen, and finally coffee liquid is obtained in the drinking cup. The whole operation process is simple and fast, and the product is easy to carry.

[0018] The utility model can not only prepare hot coffee, but also prepare iced coffee, and has a wide range of applications.

[0019] To sum up, the utility model has the characteristics of being able to automatically grind beans and automatically brew coffee on the premise of being portable. Brief Description of the Drawings

[0020] Figure 1 It is one of the partial sectional structure schematic diagrams of the first embodiment of the utility model.

[0021] Figure 2 It is the second of the partial sectional structure schematic diagrams of the first embodiment of the utility model.

[0022] Figure 3 It is the third of the partial sectional structure schematic diagrams of the first embodiment of the utility model after removing the first support member.

[0023] Figure 4 It is the first of the exploded three-dimensional structure schematic diagrams of the first embodiment of the utility model after removing the first support member and the drinking cup.

[0024] Figure 5 It is the second of the exploded three-dimensional structure schematic diagrams of the first embodiment of the utility model after removing the first support member and the drinking cup.

[0025] Figure 6 It is the three-dimensional structure schematic diagram of the grinding chamber.

[0026] Figure 7 It is the working process schematic diagram of the first embodiment of the utility model.

[0027] Figure 8 It is the partial sectional three-dimensional structure schematic diagram of the second embodiment of the utility model after removing the first support member and the drinking cup.

[0028] Figure 9 It is the first of the working process schematic diagrams of the second embodiment of the utility model.

[0029] Figure 10 It is the second of the working process schematic diagrams of the second embodiment of the utility model.

[0030] Figure 11One of the partial sectional structure diagrams of the second embodiment of the present utility model.

[0031] Figure 12 Another partial sectional structure diagram of the second embodiment of the present utility model.

[0032] Figure 13 Exploded structure diagram of the bean receiving ring and the grinding chamber in the third embodiment of the present utility model.

[0033] Figure 14 Three-dimensional structure diagram of the bean receiving ring.

[0034] Figure 15 Schematic diagram of loading coffee beans into the grinding chamber.

[0035] Figure 16 Partial sectional structure diagram of the third embodiment of the present utility model.

[0036] Figure 17 Three-dimensional structure diagram of the fourth embodiment of the present utility model during operation.

[0037] Figure 18 Three-dimensional structure diagram of the fourth embodiment of the present utility model during storage.

[0038] Figure 19 Three-dimensional structure diagram of the first support member in the fourth embodiment of the present utility model.

[0039] Figure 20 Three-dimensional structure diagram of the fifth embodiment of the present utility model during operation.

[0040] Figure 21 Three-dimensional structure diagram of the second support member.

[0041] Figure 22 Three-dimensional structure diagram of the fifth embodiment of the present utility model during storage.

[0042] Figure 23 Partial sectional structure diagram of the sixth embodiment of the present utility model.

[0043] In the figure: 1 is an outer cover, 2 is a water tank, 3 is a liquid, 4 is an electric heating element, 5 is a water outlet pipe, 5.1 is a water outlet hole, 6 is an electronic control board, 7 is a first bearing, 8 is a second bearing, 9.1 is a dial, 9.2 is a gear shift cover, 10 is a grinding motor, 11 is a lithium battery, 12 is a rotating shaft, 13 is a spring, 14 is an inner knife, 15 is an outer knife, 16 is a filter screen, 16.1 is coffee powder, 17 is a drinking cup, 18 is a first water flow channel, 18.1 is a first water injection port, 19 is a water inlet pipe, 20 is a machine body, 20.1 is an operation panel, 20.1.1 is a button, 20.2 is a first assembly groove, 20.3 is a positioning groove, 21 is a grinding chamber, 22 is a coffee bean storage cavity, 23 is a water pump, 24 is a second water flow channel, 25 is a flow diversion cover, 25.1 is a second water injection port, 25.2 is a powder passing channel, 26 is a bean receiving ring, 26.1 is a clearance hole, 27 is a coffee bean spoon, 28 is an inner cover, 29 is a positioning protrusion, 30 is a first support member, 30.1 is a first support plate, 30.1.1 is a first positioning hole, 30.2 is a second support plate, 30.2.1 is a second positioning hole, 30.3 is an intermediate connecting member, 34 is a third water flow channel, 40 is a second support member, 40.1 is a third support plate, 40.1.1 is a third positioning hole, 40.2 is a first support foot, 40.3 is a second support foot, 50 is a third support member. The dotted arrows in the figure indicate the water flow direction, and the solid arrows indicate the rotation direction of the flow diversion cover. Detailed implementation mode

[0044] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0045] First embodiment

[0046] Refer to Figures 1-23 , a portable automatic coffee machine, including a grinding chamber 21 detachably connected to the machine body 20. An inner knife 14 and an outer knife 15 for grinding coffee beans are arranged in the grinding chamber 21. A grinding motor 10 and a speed reduction mechanism connected to the output shaft of the grinding motor 10 are arranged in the machine body 20. One end of a rotating shaft 12 for driving the inner knife 14 to rotate is connected to the speed reduction mechanism, and the other end of the rotating shaft 12 is connected to the inner knife 14. A water tank 2 for containing liquid and a water pump 23 are also arranged in the machine body 20. An electric heating element 4 for heating the water tank 2 is arranged on the water tank 2. The inlet of the water pump 23 is connected to the inner cavity of the water tank 2 through a water inlet pipe 19. A coffee bean storage cavity 22 is arranged in the grinding chamber 21. The inner knife 14 and the outer knife 15 are located at the bottom of the coffee bean storage cavity 22. The top of a detachable filter screen 16 is connected to the bottom of the grinding chamber 21. A powder outlet gap is formed by the inner knife 14 and the outer knife 15 together, and the powder outlet gap is connected to the inner cavity of the filter screen 16. The outlet of the water pump 23 is connected to the inner cavity of the filter screen 16.

[0047] The inner knife 14 and the outer knife 15 for grinding coffee beans belong to the prior art and will not be elaborated here.

[0048] When ice water is injected into the water tank 2, this product can prepare iced coffee.

[0049] In this embodiment, an electric heating element 4 for heating the water tank 2 can be provided on the water tank 2 according to specific needs, so that hot coffee can be prepared.

[0050] A first water flow channel 18 separated from the coffee bean storage cavity 22 is provided on the machine body 20 or the grinding chamber 21, and the outlet of the water pump 23 is connected to the inner cavity of the filter screen 16 through the first water flow channel 18.

[0051] The water pump 23 is located below the water tank 2.

[0052] The water pump 23 is arranged beside the grinding motor 10, and a lithium battery 11 is arranged in the machine body 20 beside the grinding motor 10.

[0053] An outlet pipe 5 is arranged in the machine body 20, a water outlet hole 5.1 penetrating up and down is arranged at the bottom of the machine body 20, the outlet of the water pump 23 is connected to one end of the outlet pipe 5, the other end of the outlet pipe 5 is connected to the water outlet hole 5.1, and the water outlet hole 5.1 is connected to the first water flow channel 18.

[0054] A scale disk 9.1 for adjusting the particle size of coffee powder and a gear shifting cover 9.2 used in cooperation with it are arranged below the outer knife 15. The other end of the rotating shaft 12 passes through the inner knife 14 and the scale disk 9.1 and is threadedly connected to the gear shifting cover 9.2. The powder outlet gap is located outside the scale disk 9.1 and the gear shifting cover 9.2.

[0055] By adjusting the position of the gear shifting cover 9.2 on the rotating shaft 12 and through its mutual cooperation with the spring 13 sleeved on the rotating shaft 12, the powder outlet gap can be adjusted, so as to obtain coffee powder with different particle sizes.

[0056] The first water flow channel 18 is arranged vertically.

[0057] See Figures 4-5, there are three first water channels 18 which are circumferentially spaced. Three positioning protrusions 29 are correspondingly arranged on the upper part of the outer wall of the grinding chamber 21, and three positioning grooves 20.3 are arranged on the inner wall of the corresponding body 20. When the user inserts the three positioning protrusions 29 into the three positioning grooves to realize the docking of the grinding chamber 21 and the body 20, the water outlet pipe 5 is communicated with any one of the three first water channels 18, thereby reducing the operation difficulty for the user to align and communicate the water outlet pipe 5 with the first water channel 18.

[0058] See Figures 6-7 , a second water channel 24 arranged in a ring shape is further provided at the bottom of the grinding chamber 21. The first water channel 18 is arranged vertically. A plurality of first water injection ports 18.1 which are circumferentially spaced and penetrate up and down are arranged on the bottom end surface of the grinding chamber 21. The first water injection ports 18.1 are communicated with the inner cavity of the filter screen 16. One side of the second water channel 24 is communicated with the first water channel 18, and the other side of the second water channel 24 is communicated with the first water injection port 18.1.

[0059] During operation, the heated water is injected into the filter screen circumferentially along a plurality of first water injection ports 18.1 under the action of the water pump, which can avoid the formation of a channel effect caused by single-point fixed injection. The channel effect means that the coffee powder within the channel range is repeatedly extracted, resulting in over-extraction, bringing excessive bitter taste, smoky taste or woody taste and other negative tastes. Therefore, the product adopts circumferential water injection to make the coffee powder in the filter screen be evenly brewed, and finally the overall flavor of the obtained coffee liquid is more mellow.

[0060] See Figure 4 , one end of the body 20 connected to the grinding chamber 21 is provided with a first assembly groove 20.2 with an opening facing downwards. The end of the grinding chamber 21 is inserted into the first assembly groove 20.2, and the minimum diameter of the part where the first assembly groove 20.2 is located is greater than the maximum diameter of the grinding chamber 21; or, one end of the grinding chamber 21 connected to the body 20 is provided with an assembly boss, and a second assembly groove with an opening facing upwards is arranged on the assembly boss. The minimum outer diameter of the assembly boss is greater than the maximum outer diameter of the remaining part of the grinding chamber 21 excluding the assembly boss.

[0061] The bottom of the body 20 is connected to the top of the drinking cup 17, and the grinding chamber 21 and the filter screen 16 are located in the inner cavity of the drinking cup 17; or, after the filter screen 16 is removed, the bottom of the body 20 is connected to the top of the drinking cup 17, and the grinding chamber 21 is located in the inner cavity of the drinking cup 17.

[0062] Second Embodiment

[0063] When a second water flow channel 24 arranged in a ring shape is provided at the bottom of the grinding chamber 21, the inner knife 14 and the outer knife 15 are located inside the second water flow channel 24. To ensure the strength of the grinding chamber 21, it is necessary to increase the thickness of the wall between the outside of the outer knife 15 and the second water flow channel 24, resulting in an increase in the volume of the entire grinding chamber 21. Since this product has a portable structure, in order to prevent the inconvenience caused by its too large volume, the following structure can be adopted to avoid it.

[0064] See Figures 8-12 , in this embodiment, a dial 9.1 for adjusting the particle size of coffee powder and a flow diversion cover 25 used in cooperation with it are provided under the outer knife 15. The other end of the rotating shaft 12 passes through the inner knife 14 and the dial 9.1 and is threadedly connected to the flow diversion cover 25.

[0065] By adjusting the position of the flow diversion cover 25 on the rotating shaft 12 and through its mutual cooperation with the spring 13 sleeved on the rotating shaft 12, the powder discharging gap can be adjusted, so as to obtain coffee powder with different particle sizes.

[0066] A third water flow channel 34 arranged in a ring shape and with an open upper part is provided on the flow diversion cover 25. Two or more second water injection ports 25.1 arranged at intervals and penetrating up and down are provided at the bottom of the flow diversion cover 25. The second water injection ports 25.1 are communicated with the inner cavity of the filter screen 16. One side of the third water flow channel 34 is communicated with the first water flow channel 18, and the other side of the third water flow channel 34 is communicated with the second water injection ports 25.1. A powder passing channel 25.2 penetrating up and down and located below the powder discharging gap is provided on the flow diversion cover 25. The powder passing channel 25.2 is located beside the third water flow channel 34, and the powder passing channel 25.2 is communicated with the inner cavity of the filter screen 16.

[0067] During operation, the flow diversion cover 25 makes a slow circumferential movement driven by the rotating shaft 12, thereby driving the water flowing out from the second water injection ports 25.1 to also make a circumferential movement, so as to realize circumferential water injection. Moreover, two or more second water injection ports 25.1 are arranged at intervals, so as to realize uniform circumferential water injection.

[0068] Third Embodiment

[0069] See Figures 13-16 , in order to prevent coffee beans from entering the first water flow channel 18 and reduce the operation intensity of the user, an inner cover 28 for covering the water storage chamber 2 is provided on the machine body 20. An outer cover 1 is connected to the inner cover 28. A bean receiving ring 26 for shielding the first water flow channel 18 and exposing the coffee bean storage cavity 22 is provided on the grinding chamber 21. When the bean receiving ring 26 is not in use, the bean receiving ring 26 is arranged between the outer cover 1 and the inner cover 28 or on the inner cover 28.

[0070] For the parts not described herein, refer to the second embodiment and no further elaboration will be provided.

[0071] Fourth Embodiment

[0072] Refer to Figures 17-19 , a drinking cup 17 is provided below the filter screen 16, and the end of the machine body 20 is crimped on the support member.

[0073] In this embodiment, the support member is the first support member 30.

[0074] The first support member 30 includes a first support plate 30.1 located at the upper part, a second support plate 30.2 located at the lower part, 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, the bottom of the intermediate connecting member 30.3 is connected to the second support plate 30.2. A first positioning hole 30.1.1 is provided on the first support plate 30.1. One end of the filter screen 16 and the grinding chamber 21 sequentially pass through the first positioning hole 30.1.1, and the end of the machine body 20 is crimped on the first support plate 30.1, and the drinking cup 17 is located below the filter screen 16.

[0075] The drinking cup 17 is crimped on the second support plate 30.2; alternatively, a second positioning hole 30.2.1 is provided on the second support plate 30.2, and the minimum diameter of the second positioning hole 30.2.1 is greater than or equal to the minimum diameter of the first positioning hole 30.1.1.

[0076] When the minimum diameter of the second positioning hole 30.2.1 is greater than or equal to the minimum diameter of the first positioning hole 30.1.1, it is possible that the minimum diameter of the second positioning hole 30.2.1 is greater than the diameter of the cup body of the drinking cup 17, thus resulting in a situation as shown in Figure 16 .

[0077] For the parts not described herein, refer to the third embodiment and no further elaboration will be provided.

[0078] Fifth Embodiment

[0079] Refer to Figures 20-22 , in this embodiment, the support member is the second support member 40.

[0080] The second support member 40 includes a third support plate 40.1 located at the upper part. One end of the first support leg 40.2 is hinged to one end of the third support plate 40.1, and one end of the second support leg 40.3 is hinged to the other end of the third support plate 40.1. A third positioning hole 40.1.1 is provided on the third support plate 40.1. One end of the filter screen 16 and the grinding chamber 21 sequentially pass through the third positioning hole 40.1.1. The part where the first assembly groove 20.2 is located is crimped on the third support plate 40.1. The drinking cup 17 is located below the filter screen 16 and between the other ends of the first support leg 40.2 and the second support leg 40.3.

[0081] The length values of the first support leg 40.2 and the second support leg 40.3 are respectively greater than the total height of the grinding chamber 21, the filter screen 16, and the drinking cup 17.

[0082] For the parts not described herein, refer to the third embodiment, and details will not be repeated.

[0083] Sixth Embodiment

[0084] Refer to Figure 23 , in this embodiment, the support member is the third support member 50.

[0085] The third support member 50 is annular. The drinking cup 17 is connected to one end of the third support member 50, and the body 20 is connected to the other end of the third support member 50. The drinking cup 17 is located below the filter screen 16, and the grinding chamber 21 and the filter screen 16 are sleeved inside the third support member 50.

[0086] To obtain better use effects, ventilation holes are provided on the side wall of the third support member 50.

[0087] For the parts not described herein, refer to the third embodiment, and details will not be repeated.

[0088] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is 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, so it cannot be understood as a limitation to the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0089] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will also have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A portable automatic coffee machine, comprising a grinding chamber (21) detachably connected to a machine body (20), wherein the grinding chamber (21) is provided with an inner knife (14) and an outer knife (15) for grinding coffee beans, wherein the machine body (20) is provided with a grinding motor (10) and a speed reduction mechanism connected to an output shaft of the grinding motor (10), wherein one end of a rotating shaft (12) for driving the inner knife (14) to rotate is connected to the speed reduction mechanism, and the other end of the rotating shaft (12) is connected to the inner knife (14), wherein the machine body (20) is provided with a grinding motor (10) and a speed reduction mechanism connected to an output shaft of the grinding motor (10), wherein one end of a rotating shaft (12) for driving the inner knife (14) to rotate is connected to the speed reduction mechanism, and the other end of the rotating shaft (12) is connected to the inner knife (14), wherein the machine body (20) is provided with a grinding motor (10) and a speed reduction mechanism connected to an output shaft of the grinding motor (10), wherein the grinding motor (10) is provided with a grinding motor (10) and a speed reduction mechanism connected to an output shaft of the grinding motor (10), and ... The machine body (20) is further provided with a water tank (2) for containing liquid and a water pump (23); the inlet of the water pump (23) is communicated with the inner cavity of the water tank (2) through a water inlet pipe (19); the grinding chamber (21) is provided with a coffee bean storage chamber (22); the inner blade (14) and the outer blade (15) are located at the bottom of the coffee bean storage chamber (22); the top of the detachable filter (16) is connected to the bottom of the grinding chamber (21); the inner blade (14) and the outer blade (15) together form a powder outlet gap, the powder outlet gap is communicated with the inner cavity of the filter (16); and the outlet of the water pump (23) is communicated with the inner cavity of the filter (16).

2. A portable automatic coffee machine according to claim 1, characterized in that The machine body (20) or the grinding chamber (21) is provided with a first water flow channel (18) separated from the coffee bean storage chamber (22), and the outlet of the water pump (23) is connected to the inner cavity of the filter (16) through the first water flow channel (18).

3. A portable automatic coffee machine according to claim 2, characterized in that The water pump (23) is arranged beside the grinding motor (10); a water outlet pipe (5) is arranged in the machine body (20); a water outlet hole (5.1) penetrating from top to bottom is arranged at the bottom of the machine body (20); the outlet of the water pump (23) is connected to one end of the water outlet pipe (5); the other end of the water outlet pipe (5) is connected to the water outlet hole (5.1); and the water outlet hole (5.1) is connected to the first water flow channel (18).

4. A portable automatic coffee machine according to claim 2, characterized in that A dial (9.1) for adjusting the particle size of coffee powder and a gear adjustment cover (9.2) used in conjunction with the outer blade (15) are provided below the outer blade (15); the other end of the rotating shaft (12) passes through the inner blade (14) and the dial (9.1) and is threadedly connected to the gear adjustment cover (9.2); the powder outlet gap is located outside the dial (9.1) and the gear adjustment cover (9.2); The bottom of the grinding chamber (21) is also provided with a second water flow channel (24) arranged in an annular shape, the first water flow channel (18) is arranged vertically, and a plurality of first water injection ports (18.1) arranged in a circumferentially spaced manner and connected vertically are provided on the bottom end surface of the grinding chamber (21), the first water injection ports (18.1) are connected to the inner cavity of the filter screen (16), one side of the second water flow channel (24) is connected to the first water flow channel (18), and the other side of the second water flow channel (24) is connected to the first water injection port (18.1).

5. A portable automatic coffee machine according to claim 2, characterized in that A dial (9.1) for adjusting the particle size of coffee powder and a flow transfer cover (25) used in conjunction with the outer blade (15) are provided below the outer blade (15); the other end of the rotating shaft (12) passes through the inner blade (14) and the dial (9.1) and is threadedly connected to the flow transfer cover (25). The deflector cover (25) is provided with a third water flow channel (34) which is arranged in an annular shape and has an opening at the top. The bottom of the deflector cover (25) is provided with two or more second water injection ports (25.1) which are arranged at intervals and penetrate up and down. The second water injection ports (25.1) are connected to the inner cavity of the filter screen (16). One side of the third water flow channel (34) is connected to the first water flow channel (18), and the other side of the third water flow channel (34) is connected to the second water injection ports (25.1). The deflector cover (25) is provided with a powder passing channel (25.2) which is located below the powder outlet gap and penetrates up and down. The powder passing channel (25.2) is located next to the third water flow channel (34), and the powder passing channel (25.2) is connected to the inner cavity of the filter screen (16).

6. A portable automatic coffee machine according to claim 2, characterized in that The machine body (20) is provided with an inner cover (28) for covering the water receiving bin (2); the outer cover (1) is covered on the inner cover (28); the grinding bin (21) is provided with a bean receiving ring (26) for shielding the first water flow channel (18) and exposing the coffee bean storage cavity (22); when the bean receiving ring (26) is not in use, the bean receiving ring (26) is arranged between the outer cover (1) and the inner cover (28) or on the inner cover (28); and / or the water bin (2) is provided with an electric heating element (4) for heating the water bin (2).

7. A portable automatic coffee machine according to claim 1, characterized in that A first assembly groove (20.2) with an opening facing downward is provided at one end of the machine body (20) connected to the grinding chamber (21), and the end of the grinding chamber (21) is inserted into the first assembly groove (20.2), and the minimum diameter of the portion where the first assembly groove (20.2) is located is greater than the maximum diameter of the grinding chamber (21); or, a mounting boss is provided at one end of the grinding chamber (21) connected to the machine body (20), and a second assembly groove with an opening facing upward is provided on the mounting boss, and the minimum outer diameter of the mounting boss is greater than the maximum outer diameter of the remaining portion of the grinding chamber (21) excluding the mounting boss.

8. A portable automatic coffee machine according to claim 7, characterized in that A drinking cup (17) is arranged below the filter (16), and the end of the machine body (20) is pressed onto a supporting member; The support member is a first support member (30), the first support member (30) comprises 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), 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), the filter screen (16) and one end of the grinding bin (21) pass through the first positioning hole (30.1.1) in sequence, and the end of the machine body (20) is pressed onto the first support plate (30.1); Alternatively, the support member is a second support member (40), the second support member (40) comprises a third support plate (40.1) located at the top, one end of the first support leg (40.2) is hinged to one end of the third support plate (40.1), one end of the second support leg (40.3) is hinged 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), the filter screen (16) and one end of the grinding bin (21) pass through the third positioning hole in sequence The third positioning hole (40.1.1), the end of the machine body (20) is pressed onto the third supporting plate (40.1), the drinking cup (17) is located below the filter (16) and between the other end of the first supporting foot (40.2) and the other end of the second supporting foot (40.3), and the lengths of the first supporting foot (40.2) and the second supporting foot (40.3) are respectively greater than the sum of the heights of the grinding bin (21), the filter (16) and the drinking cup (17); Alternatively, the support member is a third support member (50), the third support member (50) is annular, the drinking cup (17) is connected to one end of the third support member (50), the machine body (20) is connected to the other end of the third support member (50), and the grinding bin (21) and the filter screen (16) are sleeved in the third support member (50).

9. A portable automatic coffee machine according to claim 8, characterized in that The drinking cup (17) is pressed onto the second supporting plate (30.2); or, a second positioning hole (30.2.1) is provided on the second supporting plate (30.2), and the minimum diameter of the second positioning hole (30.2.1) is greater than or equal to the minimum diameter of the first positioning hole (30.1.1); or, a ventilation hole is provided on the side wall of the third supporting member (50).

10. A portable automatic coffee machine according to claim 1, characterized in that The bottom of the machine body (20) is connected to the top of the drinking cup (17), and the grinding chamber (21) and the filter (16) are located in the inner cavity of the drinking cup (17); or, after the filter (16) is removed, the bottom of the machine body (20) is connected to the top of the drinking cup (17), and the grinding chamber (21) is located in the inner cavity of the drinking cup (17).

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