Portable semi-automatic trickling coffee extraction device

Abstract

The invention discloses a portable semi-automatic trickling coffee extraction device which comprises a cover body, a water bin, a powder bin and a cup body, the water bin, the powder bin and the cup body are sequentially arranged from top to bottom, the cover body is buckled to the top of the water bin, a water flow guiding device is detachably installed at the bottom of the water bin, and the lower portion of the water flow guiding device can be inserted into coffee powder in the powder bin. Water in the water bin enters the powder bin through water leakage holes formed in the bottom of the water bin and the water flow guiding device to conduct trickling filtration and extraction on coffee powder, and extracted coffee liquid flows into the cup body. By means of the arranged water flow guiding device, flow guiding of water can be achieved, the sufficient degree of contact between the water and coffee powder is increased, sufficient extraction of the coffee powder in the powder bin is achieved, and the coffee extraction rate and the extraction quality of coffee liquid are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of coffee drip extraction, and particularly to a portable semi-automatic drip coffee extraction device. Background Art

[0002] A drip coffee extraction device is an appliance that extracts coffee liquid through the drip method, enabling coffee lovers to easily make coffee with unique flavors. Its core working principle is to utilize the gravitational force to slowly drip water through the coffee powder layer to extract the soluble substances in the coffee.

[0003] In the existing coffee extraction device, after hot water is dripped into the powder bin for a period of time, a water film will form on the top of the powder layer, hindering the water body from penetrating the coffee powder. As a result, the water can only flow down from the edge of the powder bin, and the coffee powder at the bottom cannot come into full contact with the water, making it impossible to achieve full extraction, reducing the quality of the coffee liquid and the extraction efficiency. Summary of the Invention

[0004] The present invention provides a portable semi-automatic drip coffee extraction device to solve the above problems.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] A portable semi-automatic drip coffee extraction device includes a cover body, a water bin, a powder bin, and a cup body;

[0007] The water bin, the powder bin, and the cup body are arranged in sequence from top to bottom. The cover body is buckled on the top of the water bin. A water body diversion device is detachably installed at the bottom of the water bin. The lower part of the water body diversion device can be inserted into the coffee powder in the powder bin. By opening the ventilation hole provided on the cover body, the water body in the water bin enters the powder bin through the water leakage hole provided at its bottom and the water body diversion device to perform drip extraction on the coffee powder, and the extracted coffee liquid flows into the cup body.

[0008] Further, the water body diversion device includes a diversion rod and a powder separation sleeve. The top of the diversion rod is inserted into the outer or inner circle of the clamping ring provided at the bottom of the water bin, and there is a flowing water interval between the diversion rod and the bottom of the water bin. The powder separation sleeve is in a hollow cylindrical structure and is sleeved on the outer side of the upper part of the diversion rod. A plurality of groups of vertically arranged diversion prism surfaces that extend radially inward from its edge are uniformly provided on the side wall of the diversion rod. The water body in the water bin flows to the powder bin through the water leakage hole and the diversion prism surfaces to extract the coffee powder in the powder bin.

[0009] Further, at least one spreading platform is provided on the diversion rod, and the spreading platform has a diversion plane arranged in the horizontal direction.

[0010] Further, a segmented stirring structure that deforms upon heating is provided on the flow guiding rod. The segmented stirring structure includes a first shape memory alloy stirring claw and a second shape memory alloy stirring claw. The first shape memory alloy stirring claw is disposed above the second shape memory alloy stirring claw. In the natural state, the first shape memory alloy stirring claw and the second shape memory alloy stirring claw extend vertically downward. After heating, both the first shape memory alloy stirring claw and the second shape memory alloy stirring claw can fold upward, and the heat deformation temperature of the first shape memory alloy stirring claw is lower than that of the second shape memory alloy stirring claw.

[0011] Further, a water level control ring is further included. The water level control ring has a hollow ring structure and is installed at the bottom of the water tank. During extraction, when the water body at the top of the coffee powder in the powder bin contacts the water level control ring, a deceleration space is formed between the water body, the water level control ring, and the bottom of the water tank, so that the outflow speed of the water body in the water tank slows down.

[0012] Further, a receiving groove is provided on the inner side wall of the powder bin. When the water body guiding device is removed from the water tank, the powder bin can be inverted and form a receiving space with the cup body. The water tank can be placed in the receiving space, the top of the water tank is disposed in the receiving groove, and the cover body can be buckled on the top of the inverted powder bin.

[0013] The cover body can also be buckled on the top of the cup body filled with coffee liquid.

[0014] Further, a plurality of keels are vertically spaced on the inner wall of the powder bin. A receiving groove is provided between the top side wall of the keel and the side wall of the powder bin. The bottom of the water tank can abut against the top of the keel to extract coffee. After the extraction is completed, the powder bin can be inverted on the top of the water tank, and the top edge of the water tank is disposed in the receiving groove.

[0015] Further, a gas blowing device is further included. An air inlet channel is provided inside the flow guiding rod. One end of the air inlet channel can be connected to the gas blowing device inserted on the flow guiding rod, and the other end is disposed on the flow guiding rib surface and communicated with the powder bin through an air outlet hole; the bottom of the water tank can be clamped to the lap joint tray.

[0016] Further, a coffee grinder that can be stored between the cup body and the powder bin is further included. The coffee grinder includes a motor chamber, a bean chamber, and a powder collection chamber.

[0017] The motor chamber is provided with a motor, a driving rod and a driving gear set. The output end of the motor is rotationally connected to the driving rod through the driving gear set. The bean bin is provided with a driven rod and a cutter. Both the motor chamber and the bean bin are provided with clamping structures. The motor chamber can be installed on the top of the bean bin through the clamping structure. The powder collection bin is installed at the bottom of the bean bin through a clamping platform structure. The bottom of the driving rod is connected to the top of the driven rod. The motor drives the cutter to rotate by driving the driving rod and the driven rod to rotate for grinding beans. The lower part of the bean bin can be received into the powder collection bin, and the motor chamber can be received into the bean bin. When the motor chamber is received into the bean bin, the driving rod is sleeved outside the driven rod.

[0018] Further, the clamping structure on the motor chamber is an elastic clamping pin arranged at the bottom of the motor chamber and extending radially outwards. The clamping structure on the bean bin is a clamping groove provided on the wall of the bean bin. After the elastic clamping pin pops outwards through the clamping groove, the motor chamber is clamped on the top of the bean bin. An external force can drive the elastic clamping pin to retract inwards and exit the clamping groove, and the motor chamber can slide into the bean bin for storage, or

[0019] The clamping structure on the motor chamber is an L-shaped slideway. The L-shaped slideway includes a first slideway arranged horizontally and a second slideway connected to one end of the first slideway and extending vertically upwards. The clamping structure on the bean bin is a radial clamping pin provided on the bin wall. The inner side of the radial clamping pin can slide in the first slideway or the second slideway. When the radial clamping pin is in the first slideway, the motor chamber is clamped on the top of the bean bin. When the radial clamping pin slides from the first slideway into the second slideway and is at the top of the second slideway, the motor chamber is received into the interior of the bean bin, or

[0020] The clamping structure on the motor chamber is a clamping slideway. The clamping slideway is vertically arranged on both sides of the motor chamber. The clamping slideway is provided with a fixed clamping groove. The clamping structure on the bean bin is a radial elastic clamping pin provided on the wall of the bean bin. When the inner side of the radial elastic clamping pin enters the fixed clamping groove, the motor chamber is clamped on the top of the bean bin. An external force pulls the radial elastic clamping pin outwards, so that the inner side of the radial elastic clamping pin moves out of the fixed clamping groove, and the motor chamber can be received into the interior of the bean bin, or

[0021] The clamping structure on the motor bin is a clamping claw hinged to the bottom of the motor bin; the clamping structure on the bean bin is a clamping claw slot provided at the top of the bean bin wall. When the clamping claw is arranged radially, the clamping claw can be clamped in the clamping claw slot, and at this time, the motor bin is clamped on the top of the bean bin; when the clamping claw is driven by an external force to rotate to a vertical state, the motor bin can be received into the interior of the bean bin.

[0022] The beneficial effects of the present invention are:

[0023] A portable semi-automatic drip coffee extraction device disclosed in the present invention can control the outflow or stop of the water body in the water bin by controlling the opening and closing of the vent hole, that is, it can realize the semi-automatic drip extraction of coffee. The water body diversion device provided can realize the diversion of the water body, increase the contact area between the water body and the coffee powder, improve the sufficiency of the contact between the water body and the coffee powder, realize the full extraction of the coffee powder in the powder bin, and improve the coffee extraction rate and the extraction quality of the coffee liquid. Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 Structural schematic diagram of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of the present invention Figure 1 (Extraction state);

[0026] Figure 2 Front view sectional view of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of the present invention Figure 1 (Extraction state);

[0027] Figure 3 Structural schematic diagram of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of the present invention Figure 2 (Storage state);

[0028] Figure 4 Front view sectional view of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of the present invention Figure 2 (Storage state);

[0029] Figure 5 Front view sectional view of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of the present invention Figure 3 (With a coffee grinder stored);

[0030] Figure 6 Structural schematic diagram of the water tank and the water body diversion device of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of the present invention;

[0031] Figure 7 Structural schematic diagram of the water tank of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of the present invention;

[0032] Figure 8 Structural schematic diagram of the powder bin of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of the present invention;

[0033] Figure 9 Structural schematic diagram of the cover body covering the cup body after the extraction of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of the present invention;

[0034] Figure 10 Schematic diagram of the segmented stirring structure of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 2 of the present invention Figure 1 (Before folding);

[0035] Figure 11 Schematic diagram of the segmented stirring structure of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 2 of the present invention Figure 2 (After folding);

[0036] Figure 12 Structural schematic diagram of the water body height control ring of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 3 of the present invention;

[0037] Figure 13 Structural schematic diagram of the air blowing device and the overlapping sleeve plate of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 5 of the present invention;

[0038] Figure 14 Main view cross-sectional schematic diagram of the air blowing device and the overlapping sleeve plate of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 5 of the present invention;

[0039] Figure 15 Structural schematic diagram of the coffee grinder of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 6 of the present invention;

[0040] Figure 16 Main view cross-sectional schematic of the coffee grinder of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 6 of the present invention Figure 1 ;

[0041] Figure 17 Main view cross-sectional schematic of the coffee grinder of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 6 of the present invention Figure 2(Assembly state);

[0042] Figure 18 Schematic diagram of the grinder structure of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 7 of the present invention (powder collection bin not shown);

[0043] Figure 19 Schematic diagram of the grinder structure of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 8 of the present invention (powder collection bin not shown);

[0044] Figure 20 Schematic diagram of the radial elastic snap structure of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 8 of the present invention.

[0045] In the figure:

[0046] 1. Cover body; 11. Ventilation hole; 13. Drinking port; 14. Rubber cover;

[0047] 2. Water tank; 21. Water leakage hole; 22. Snap ring;

[0048] 3. Powder bin; 31. Accommodating groove; 32. Keel;

[0049] 4. Cup body;

[0050] 5. Water body diversion device; 51. Diversion rod; 511. Diversion prism surface; 512. Air intake channel; 52. Powder separation sleeve; 53. Dispersion platform; 531. Diversion plane; 54. Air outlet;

[0051] 6. Segmented stirring structure; 61. First shape memory alloy stirring claw; 62. Second shape memory alloy stirring claw;

[0052] 7. Water body height control ring;

[0053] 8. Storage space;

[0054] 9. Lapping sleeve plate;

[0055] 10. Air inflation device; 101. Rubber air inflation head; 102. Air guide rod;

[0056] 12. Grinder;

[0057] 121. Motor bin; 121a. Motor; 121b. Driving rod; 121c. Driving gear; 121d. Driven gear; 121e. Elastic snap; 121f. L-shaped slideway; 121g. First slideway; 121h. Second slideway; 121i. Third slideway; 121j. Snap slideway; 121k. Fixed card slot;

[0058] 122. Bean bin; 122a. Driven rod; 122b. Tool; 122c. Storage card table; 122d. Clamping card table; 122e. Card slot; 122f. Radial retaining pin; 122h. Opening and closing door; 122i. Radial elastic retaining pin; 122j. Retaining pin; 122k. Fixed frame; 122l. Spring; 122m. Connecting plate;

[0059] 123. Powder collection bin; 123a. Boss structure. Specific embodiments

[0060] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0061] Embodiment 1:

[0062] As Figure 1-2 shown, a portable semi-automatic drip coffee extraction device provided in this embodiment includes a cover body 1, a water bin 2, a powder bin 3, and a cup body 4;

[0063] When extracting coffee, the water bin 2, the powder bin 3, and the cup body 4 are arranged in sequence from top to bottom. The cover body 1 is buckled on the top of the water bin 2. A water body diversion device 5 is detachably installed at the bottom of the water bin 2. The lower part of the water body diversion device can be inserted into the coffee powder in the powder bin 3. Open the ventilation hole 11 provided on the cover body 1. The water body in the water bin 2 enters the powder bin 3 through the water leakage hole 21 provided at its bottom and the water body diversion device to perform drip extraction on the coffee powder. The extracted coffee liquid flows into the cup body. The structure of the water bin is as Figure 6-7 shown; multiple ventilation holes are provided on the cover body 1, and the ventilation holes are blocked by a rubber cover 13. When the cover body is not covered on the top of the water bin, it is the first-stage water injection. When the cover body is covered, the water flow stops flowing and the coffee extraction enters the first-stage steaming stage to steam the coffee. After the steaming is completed, the outflow speed of the water body in the water bin 2 can be adjusted by controlling the number of opened ventilation holes, and the second-stage water injection is performed, thereby controlling the time and progress of coffee extraction to meet the taste requirements of different users;

[0064] After the coffee extraction is completed, as Figure 9 shown, the cover body 1 is buckled on the top of the cup body 4, and the user directly drinks the coffee in the cup body 4; a drinking port 13 is provided on the cover body 1, and a plug cover 14 is provided at the drinking port to prevent the coffee liquid from splashing when not drinking coffee. Removing the plug cover 14 facilitates the user to drink coffee;

[0065] A receiving groove 31 is provided on the inner side wall of the powder bin 3. When the device is to be stored after use, the water guiding device is removed from the water bin 2. After the powder bin 3 is inverted, a storage space 8 can be formed with the cup body 4. The water bin 2 is placed in the storage space, the top of the water bin 2 is arranged in the receiving groove, and the cover body 1 is buckled on the top of the inverted powder bin 3. The outer wall of the powder bin 3 is sleeved and clamped with the upper edge of the cup body 4 to complete the storage of the device, as Figure 3-4 shown.

[0066] Preferably, as Figure 8 shown, a plurality of keels 32 are vertically and spacedly arranged on the inner wall of the powder bin 3. A receiving groove is provided between the top side wall of the keel 32 and the side wall of the powder bin 3. The bottom of the water bin can abut against the top of the keel to extract coffee. After the extraction is completed, the powder bin 3 is inverted on the top of the water bin 2, and the top edge of the water bin 2 is arranged in the receiving groove 31. When storing, the top of the water bin 2 is received into the receiving groove 31, thereby reducing the height of the device during storage and reducing the volume occupied by the device during storage, making the volume of the device more compact and more portable when storing, meeting the needs of users to carry and use. The provided keels 32 are used to support the filter paper used during coffee extraction, increasing the contact area between the filter paper and the powder bin 3, ensuring the stability of the filter paper, and avoiding the phenomenon that the filter paper topples over as the water body continuously flows in during the drip filtration process, thereby ensuring the smooth progress of the drip filtration extraction of coffee.

[0067] A portable semi-automatic drip coffee extraction device disclosed by the present invention can control the outflow or stop of the water body in the water bin by controlling the opening and closing of the ventilation holes, that is, it can realize the semi-automatic drip extraction of coffee. Through the provided water guiding device, the diversion of the water body can be realized, increasing the contact area between the water body and the coffee powder and improving the adequacy of the contact between the water body and the coffee powder, realizing the full extraction of the coffee powder in the powder bin, and improving the coffee extraction rate and the extraction quality of the coffee liquid.

[0068] Preferably, as Figure 6As shown in the figure, the water diversion device includes a diversion rod 51 and a powder separation sleeve 52. The top of the diversion rod 51 is inserted into the inner circle of a clamping ring 22 provided at the bottom of the water tank 2, and there is a flowing water interval between the diversion rod 51 and the bottom of the water tank 2; the powder separation sleeve 52 is of a hollow cylindrical structure and is sleeved on the outer side of the upper part of the diversion rod 51; a plurality of groups of vertically arranged diversion prism surfaces 511 that extend radially inward from its edge are uniformly provided on the side wall of the diversion rod 51. The water in the water tank 2 flows into the powder bin 3 through the water leakage holes and the diversion prism surfaces to extract the coffee powder in the powder bin 3; the height of the powder separation ring is less than the height of the diversion rod 51, and the specific height of the powder separation ring can be set according to actual extraction needs (the height of the coffee powder). The powder separation ring is used to block the upper part of the diversion prism surface from the coffee powder, preventing the powder from directly contacting the upper part of the diversion prism surface and hindering the water from flowing down through the diversion prism surface, so as to ensure that the diversion rod 51 of the diversion device can better play the diversion function and ensure that the water can fully contact the powder at the bottom of the powder bin 3, and fully drip-filter and extract all the powder in the powder bin 3.

[0069] Preferably, at least one spreading platform 53 is provided on the diversion rod 51, and the spreading platform 53 has a diversion plane 531 arranged in the horizontal direction; during the process of the water flowing down along the diversion prism surface, the diversion plane 531 plays a role in guiding part of the water to flow and disperse in the radial direction, expanding the area of the radial diffusion of the water, so that the coffee powder at the bottom of the powder bin 3 can fully contact the water and ensure sufficient extraction of the coffee powder.

[0070] Embodiment 2:

[0071] The difference between this embodiment and Embodiment 1 is only that in this embodiment, a segmented stirring structure 6 that deforms when heated is provided on the diversion rod 51;

[0072] The specific structure of the segmented stirring structure 6 is as Figure 10-11 shown. The segmented stirring structure 6 includes a first shape memory alloy stirring claw 61 and a second shape memory alloy stirring claw 62. The first shape memory alloy stirring claw 61 is arranged above the second shape memory alloy stirring claw 62. In the natural state, the first shape memory alloy stirring claw 61 and the second shape memory alloy stirring claw 62 extend vertically downward ( Figure 10 ), and after being heated, both the first shape memory alloy stirring claw 61 and the second shape memory alloy stirring claw 62 can be folded upward ( Figure 11 ), and the heat deformation temperature of the first shape memory alloy stirring claw 61 is lower than the heat deformation temperature of the second shape memory alloy stirring claw 62;

[0073] During the extraction process, the first shape memory metal stirring claw 61 located on the upper side first folds after being heated. During the folding process, it stirs and mixes the coffee powder, increasing the contact area between the powder and the water body. This is equivalent to increasing the expansion degree of the powder, thereby improving the extraction efficiency, sufficiency, and uniformity. When hot water continuously flows into the powder bin 3, as the amount of hot water in the powder bin 3 increases, the temperature in the powder bin 3 continues to rise. When the temperature reaches the deformation temperature of the second shape memory metal stirring claw 62, the second shape memory metal stirring claw 62 deforms and folds. During the folding process, it stirs and mixes the coffee powder, thus increasing the contact area between the coffee powder and the water body and ensuring the sufficient extraction of the coffee powder. The first shape memory metal stirring claw 61 and the second shape memory metal stirring claw 62 cooperate to stir the coffee powder in stages and at different times, further improving the sufficiency of the coffee powder extraction and ensuring the coffee extraction efficiency and quality. In this embodiment, one end of the second shape memory metal stirring claw 62 is installed on the distribution platform 53 and is located below the diversion plane 531; one end of the first shape memory metal stirring claw 61 is installed on the mounting ring provided at the bottom of the powder separating sleeve 52. The shape memory metal materials of the first shape memory metal stirring claw 61 and the second shape memory metal stirring claw 62 are selected from materials with different deformation temperatures. For example, the first shape memory metal stirring claw 61 is made of nickel-titanium-copper alloy (deformation temperature is 75°C - 85°C), and the second shape memory metal stirring claw 62 is made of iron-manganese-silicon alloy (deformation temperature is 90°C - 110°C).

[0074] Embodiment 3:

[0075] The difference between this embodiment and Embodiment 2 is only that, as Figure 12 shown, in this embodiment, a water body height control ring 7 is installed at the bottom of the water tank 2. The water body height control ring 7 has a hollow ring structure, and the inner diameter of the water body height control ring 7 is smaller than the inner diameter of the powder bin 3. During extraction, when the water body at the top of the coffee powder in the powder bin 3 contacts the water body height control ring 7, a deceleration space is formed between the water body, the water body height control ring 7, and the bottom of the water tank 2. The formation of this deceleration space reduces the pressure in the powder bin 3, so that the outflow speed of the water body in the water tank 2 slows down, thereby prolonging the contact time between the water body and the coffee powder, enabling the water body and the coffee powder to be in sufficient contact for extraction, ensuring the flavor of the extracted coffee liquid and improving the quality of the coffee liquid. In addition, the water body height control ring 7 can also effectively prevent the water body from entering the powder bin 3. After the coffee powder absorbs water and expands, if the water body continues to flow into the powder bin 3, the water film height of the water body on the upper layer of the powder will be too high, resulting in the liquid flowing out from the top of the powder bin 3 and preventing the extraction from failing; when the water level in the water tank drops, the air pressure resistance in the deceleration space will be broken, and the normal water injection flow rate will be maintained to continue the extraction.

[0076] Embodiment 4:

[0077] The difference between this embodiment and Embodiment 3 is only that in this embodiment, the segmented stirring structure 6 that deforms when heated is not provided on the diversion rod 51.

[0078] Embodiment 5:

[0079] The difference between this embodiment and Embodiment 1 is only that, as Figure 13-14 shown, in this embodiment, the bottom of the water storage tank 2 can be clamped with a lap joint sleeve plate 9, and the water body diversion device 5 is connected with an air-blowing device 10; the lap joint sleeve plate can be sleeved on the bottom of the water storage tank 2 and extend outward along the radial direction of the water storage tank 2, which is convenient for matching powder bins 3 with different diameters, has stronger adaptability, and the detachable setting will not affect the storage of the water storage tank 2, greatly improving the flexibility and convenience of use.

[0080] An air inlet channel is provided inside the diversion rod 51. One end of the air inlet channel can be connected with the air-blowing device inserted on the diversion rod 51, and the other end is arranged on the diversion rib surface and communicated with the powder bin 3 through the air outlet holes 511;

[0081] As Figure 14 shown, the air-blowing device 10 includes a rubber air-blowing head 101 and a gas guide rod 102 connected to the rubber air-blowing head. A jack is provided on the side wall of the powder bin 3, and a rubber plug is provided at the jack. When the flow rate of the water body becomes very slow after extraction for a period of time, the rubber plug on the powder bin 3 can be pulled out, the gas guide rod can be inserted into the powder bin 3 and passed through the through hole on the water height control ring 7, and inserted into the connection hole provided on the diversion rod 51, so that the elastic rubber air-blowing head is connected with the air inlet channel in the center of the diversion rod 51. Under the pressure of squeezing the elastic rubber air-blowing head, air flow is generated, and then the air flow passes through the gas guide rod and the air inlet channel, and finally is blown out from the air outlet 54 provided on the diversion rib surface to blow air on the mixture of coffee powder and water, improving the fluffiness of the coffee powder, that is, increasing the gap between coffee powder particles (reducing the density of coffee powder particles), so that the water body and coffee powder particles in the powder bin 3 can be fully contacted, thereby ensuring the extraction efficiency and extraction effect. In addition, the air-blowing device is detachable, does not affect the storage of the water storage tank 2, and is flexible and convenient to use.

[0082] Embodiment 6:

[0083] A coffee grinder, as Figure 15-17 shown, includes a motor housing 121, a bean hopper 122 and a powder collection bin 123;

[0084] The motor chamber 121 is provided with a motor 121a, a driving rod 121b and a driving gear set. The output end of the motor is rotationally connected to the driving rod 121b through the driving gear set. The upper and lower ends of the driving rod 121b are respectively rotatably connected to the motor chamber 121 through bearings. The bean bin 122 is provided with a driven rod 122a and a cutter 122b. The motor chamber 121 and the bean bin 122 are both provided with clamping structures. When grinding beans, the motor chamber 121 can be installed on the top of the bean bin 122 through the clamping structure. The powder collection bin 123 is installed at the bottom of the bean bin 122 through a clamping platform structure. The bottom of the driving rod 121b is connected to the top of the driven rod 122a. The motor drives the cutter 122b to rotate by driving the driving rod 121b and the driven rod 122a to rotate, so as to grind beans. After grinding beans, the lower part of the bean bin 122 can be received into the powder collection bin 123, and the motor chamber 121 can be received into the bean bin 122. At this time, the driving rod 121b is sleeved outside the driven rod 122a.

[0085] After the motor chamber 121 is received into the bean bin 122, the whole coffee grinder can be placed in the coffee grinder storage space formed by the powder bin 3 (inverted) and the water bin 2.

[0086] The output end of the motor is provided with a driving gear 121c, and the driving rod 121b is provided with a driven gear 121d. The driving gear meshes with the driven gear. The driving rod 121b is of a hollow hexagonal prism structure, and the driven rod 122a is of a hexagonal prism structure. During operation, the motor chamber 121 is clamped on the top of the bean bin 122. The bottom of the driving rod 121b is sleeved outside the top of the driven rod 122a. After the motor is started, the driving rod 121b is driven to rotate through the output end of the motor, the driving gear and the driven gear. The driving rod 121b drives the driven rod 122a to rotate, and then drives the cutter 122b to rotate, so as to grind and crush the coffee beans. After the coffee beans are ground into powder, the coffee powder in the powder collection bin 123 is transferred to the powder bin 3 to complete the subsequent coffee extraction.

[0087] In this embodiment, the clamping structure on the motor chamber 121 is an elastic clamping pin 121e provided at the bottom of the motor chamber 121 and extending radially outward. The clamping structure on the bean bin 122 is a clamping groove 122e provided on the wall of the bean bin 122. After the elastic clamping pin pops out through the clamping groove, the motor chamber 121 is clamped on the top of the bean bin 122. An external force can drive the elastic clamping pin to retract inward and exit the clamping groove, and make the motor chamber 121 slide into the bean bin 122 for storage. The outer diameter of the motor chamber 121 is smaller than the inner diameter of the bean bin 122, which is convenient for it to be received in the bean bin 122. After extraction and drinking are completed, the coffee grinder is stored between the cup body 4 and the powder bin 3, as Figure 5As shown, the elastic latch can be driven inward by an external force to retract and exit the card slot, and the motor compartment can be moved away from the bean bin, so that the motor compartment can be separated from the bean bin, which is convenient for cleaning and maintenance of the coffee grinder.

[0088] Moreover, in this embodiment, the bottom of the bean bin 122 of the coffee grinder can be received in the powder collection bin 123, and the specific implementation structure is as follows:

[0089] As Figure 15 shown, two groups of clamping platform structures are provided on the wall of the bean bin 122, one group is the receiving clamping platform 122c, and the other group is the clamping and connecting clamping platform 122d. The position height of the receiving clamping platform is higher than the position height of the clamping and connecting clamping platform. A boss structure 123a is provided on the side wall of the powder collection bin 123. When grinding coffee beans, the bottom surface of the clamping and connecting clamping platform abuts against the top surface of the boss structure. At this time, the bean bin 122 abuts against the top of the powder collection bin 123; when the grinding of coffee beans is finished, rotate the bean bin 122 so that the bottom surface of the receiving clamping platform abuts against the top surface of the boss structure. At this time, the bottom of the bean bin 122 contacts the bottom of the powder collection bin 123, and the lower part of the bean bin 122 is received in the powder collection bin 123. On the one hand, this coffee grinder receives the lower part of the bean bin 122 into the powder collection bin 123, and on the other hand, it receives the motor compartment 121 into the bean bin 122, greatly reducing the volume of the coffee grinder after storage, realizing the efficient use of space, and significantly improving the portability of the product;

[0090] An opening and closing door 122h is provided on the bean bin 122. When grinding coffee is needed, open the opening and closing door, put the coffee beans into the bean bin 122, close the opening and closing door, and start the motor to grind the coffee.

[0091] Embodiment 7:

[0092] A coffee grinder, the difference from Embodiment 6 is only that, as Figure 18As shown in the figure, in this embodiment, the clamping structure on the motor bin 121 is an L-shaped slideway 121f, and the clamping structure on the bean bin 122 is a radial clamping pin 122f provided on the bin wall; the L-shaped slideway includes a first slideway 121g arranged horizontally and a second slideway 121h connected to one end of the first slideway and extending vertically upward; the inner side of the radial clamping pin 122f can slide in the first slideway or the second slideway. When the radial clamping pin is in the first slideway, the motor bin 121 is clamped on the top of the bean bin 122. When the radial clamping pin slides from the first slideway into the second slideway and is at the top of the second slideway, the motor bin 121 is received inside the bean bin 122. A third slideway 121i is connected to the lower side of the first slideway. When it is necessary to remove the motor bin 121 from the bean bin 122, rotate the motor bin 121 to make the inner side of the radial clamping pin enter the third slideway, and then apply a driving force to the motor bin 121 to move it away from the bean bin 122, so that the motor bin 121 can be separated from the bean bin 122, which is convenient for cleaning the residual coffee bean dregs in the bean bin motor bin, and is also convenient for overhauling and replacing the parts of the coffee grinder.

[0093] Embodiment 8:

[0094] A coffee grinder, the difference from Embodiment 6 is only that, as Figure 19 shown in the figure, in this embodiment, the clamping structure on the motor bin 121 is a clamping slideway 121j, and the clamping structure on the bean bin 122 is a radial elastic clamping pin 122i provided on the bin wall of the bean bin 122; the clamping slideways are vertically arranged on both sides of the motor bin 121, and fixing card slots 121k are arranged in the clamping slideways; when no external force is applied, under the elastic action of the spring inside the radial elastic clamping pin, the inner side of the radial elastic clamping pin is arranged in the clamping slideway, and when the inner side of the radial elastic clamping pin enters the fixing card slot, the motor bin 121 is clamped on the top of the bean bin 122; when an external force is used to pull the radial elastic clamping pin outward, the inner side of the radial elastic clamping pin is moved out of the fixing card slot, and the external force drives the motor bin to slide into the bean bin, and the motor bin 121 is received inside the bean bin 122;

[0095] As Figure 20 shown in the figure, the radial elastic clamping pin 122i includes a clamping pin 122j, a fixing frame 122k, a spring 122l and a connecting plate 122m; a fixing frame is provided on the inner bin wall of the bean bin, one end of the clamping pin is arranged outside the bean bin, the other end passes through the fixing frame and extends outside the fixing frame, a connecting plate is arranged on the clamping pin, and the spring and the connecting plate are arranged in the fixing frame, and the two ends of the spring are respectively abutted against the inner wall of the fixing frame and the connecting plate.

[0096] Comparative Example 1:

[0097] The difference between this comparative example and Example 1 is only that in this comparative example, the dispersion platform 53 is not provided on the diversion rod 51.

[0098] Comparative Example 2:

[0099] The difference between this comparative example and Example 3 is only that in this comparative example, the water body diversion device and the segmented stirring structure 6 are not provided, and only the water body height control ring 7 is installed at the bottom of the water tank 2.

[0100] Comparative Example 3:

[0101] The difference between this comparative example and Example 3 is only that in this comparative example, the water body diversion device, the segmented stirring structure 6 and the water body height control ring 7 are not provided.

[0102] The drip extraction devices of Examples 1 - 3 and Comparative Examples 1 - 3 were used to conduct coffee extraction experiments respectively, and the concentration (TDS total solid solubility), extraction rate, time, and weight of the coffee liquid of the extracted coffee were measured. The experimental parameters are as follows:

[0103] The coffee bean variety is Ethiopian Yirgacheffe washed. The roasting degree of the roasted beans is 78.2 on the surface of the beans and 97.9 in the middle, with a particle size of 650 μm, medium - fine, grinding degree of 535, coffee powder weight of 30 g, brewing water temperature of 93 °C, and brewing water body weight of 320 g. The coffee extraction results measured are shown in Table 1 below;

[0104] Table 1 Coffee extraction results of Examples 1 - 3 and Comparative Examples 1 - 3

[0105]

[0106] From the data in the above table, it can be seen that the results of Examples 1-5 can all meet the SCAA Gold Cup Standard (Specialty Coffee Association of America Gold Cup Standard, a set of criteria for measuring and evaluating high-quality coffee brewing. In this standard, the extraction efficiency range is 18%-22%, and the coffee liquor concentration range is 1.15-1.35%); among them, after the water body diversion device is combined with the segmented stirring structure 6 (Example 2), the coffee extraction efficiency and concentration can be improved, enabling more coffee flavor substances to dissolve out fully and the taste to be more rich in layers; when the water body diversion device, the segmented stirring structure 6 and the water body height control ring 7 are combined together (Example 3), the extraction uniformity and stability are further improved, avoiding local over-extraction or under-extraction, and the coffee liquor concentration and flavor are more balanced; in Example 4, the combined action of the water body diversion device and the water body height control ring 7 improves the contact efficiency between the coffee powder and water, increasing the coffee liquor concentration while ensuring the extraction efficiency; in Example 5, the air flow blown out by the air-blowing device 10 can act on the mixture of coffee powder and water, increasing the fluffiness of the coffee powder, enlarging the powder particle gaps, reducing the density, and breaking the compact state of the coffee powder caused by factors such as soaking. After the fluffiness of the coffee powder is increased, conditions are created for the water body to fully contact the coffee powder particles, ensuring that the water body can extract the effective components in the coffee powder more comprehensively and evenly, thereby ensuring the extraction efficiency and effect and improving the coffee quality.

[0107] From the result comparison between Example 3 and Comparative Example 3, it can be seen that the water body diversion device, the segmented stirring structure 6 and the water body height control ring 7 have a greater impact on the coffee extraction efficiency and effect, further proving the importance of their combination;

[0108] From the result comparison between Example 1 and Comparative Examples 2-3, it can be seen that the extraction rate and coffee liquor concentration of the drip extraction device with the water body diversion device are significantly higher than those of the device without the diversion device, and both the coffee extraction quality and efficiency are significantly improved, proving the core role of the water body diversion device in improving the coffee extraction efficiency and optimizing the extraction quality, highlighting the importance of the water body diversion device to the coffee extraction result;

[0109] From the result comparison between Example 1 and Comparative Example 1, it can be seen that setting the platform structure on the water body diversion device can significantly improve both the coffee extraction efficiency and quality, fully proving the key role of the dispersion platform 53 in enhancing the performance of the water body diversion device and optimizing the coffee extraction effect, and further illustrating the significance of the structural design of the water body diversion device in improving the coffee extraction quality and efficiency;

[0110] From the result comparison between Example 3 and Comparative Example 2, it can be seen that if only the water body height control ring 7 is set and the diversion device and the shape memory alloy stirrer are not set, although the water body in the powder bin 3 will not overflow during the brewing process, its extraction efficiency and the concentration of the coffee liquid will decrease significantly, that is, the extraction effect will be greatly reduced, the coffee flavor will be weak, and the ideal taste standard of the golden cup cannot be achieved.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A portable semi-automatic drip coffee extraction device, characterized in that, It includes a cover body (1), a water tank (2), a powder bin (3) and a cup body (4); The water tank (2), the powder bin (3) and the cup body (4) are arranged in sequence from top to bottom. The cover body (1) is buckled on the top of the water tank (2). A water body diversion device (5) is detachably installed at the bottom of the water tank (2). The lower part of the water body diversion device can be inserted into the coffee powder in the powder bin (3). By opening the ventilation hole (11) provided on the cover body (1), the water body in the water tank (2) enters the powder bin (3) through the water leakage hole (21) provided at its bottom and the water body diversion device to drip-filter and extract the coffee powder, and the extracted coffee liquid flows into the cup body.

2. A portable semi-automatic drip coffee extraction device according to claim 1, characterized in that, The water body diversion device includes a diversion rod (51) and a powder separation sleeve (52). The top of the diversion rod (51) is inserted into the outer or inner circle of the clamping ring (22) provided at the bottom of the water tank (2), and there is a flowing water interval between the diversion rod (51) and the bottom of the water tank (2). The powder separation sleeve (52) has a hollow cylindrical structure and is sleeved on the outer side of the upper part of the diversion rod (51). A plurality of groups of vertically arranged diversion rib surfaces (511) extending radially inward from its edge are uniformly provided on the side wall of the diversion rod (51). The water body in the water tank (2) flows to the powder bin (3) through the water leakage hole and the diversion rib surface to extract the coffee powder in the powder bin (3).

3. A portable semi-automatic drip coffee extraction device according to claim 2, characterized in that, At least one spreading platform (53) is provided on the diversion rod, and the spreading platform (53) has a diversion plane (531) arranged in the horizontal direction.

4. A portable semi-automatic drip coffee extraction device according to claim 2, wherein A segmented stirring structure (6) that deforms when heated is provided on the diversion rod (51). The segmented stirring structure (6) includes a first shape memory metal stirring claw (61) and a second shape memory metal stirring claw (62). The first shape memory metal stirring claw (61) is arranged above the second shape memory metal stirring claw (62). In the natural state, the first shape memory metal stirring claw (61) and the second shape memory metal stirring claw (62) extend vertically downward. After being heated, both the first shape memory metal stirring claw (61) and the second shape memory metal stirring claw (62) can be folded upward, and the heat deformation temperature of the first shape memory metal stirring claw (61) is lower than the heat deformation temperature of the second shape memory metal stirring claw (62).

5. A portable semi-automatic drip coffee extraction device according to claim 1, characterized in that, It also includes a water body height control ring (7). The water body height control ring (7) has a hollow ring structure. The water body height control ring (7) is installed at the bottom of the water tank (2). During extraction, when the water body on the top of the coffee powder in the powder bin (3) contacts the water body height control ring (7), a deceleration space is formed between the water body, the water body height control ring (7) and the bottom of the water tank (2), so that the outflow speed of the water body in the water tank (2) slows down.

6. A portable semi-automatic drip coffee extraction device according to claim 1, characterized in that, The inner side wall of the powder bin (3) is provided with a receiving groove (31). The water body diversion device is removed from the water bin (2). After the powder bin (3) is inverted, a storage space (8) can be formed with the cup body (4). The water bin (2) can be placed in the storage space (8). The top of the water bin (2) is arranged in the receiving groove (31). The cover body (1) can be buckled on the top of the inverted powder bin (3). The cover body can also be buckled on the top of the cup body (4) filled with coffee liquid.

7. A portable semi-automatic drip coffee extraction device according to claim 6, characterized in that, A plurality of keels (32) are vertically and spacedly arranged on the inner wall of the powder bin (3). A receiving groove is provided between the top side wall of the keel (32) and the side wall of the powder bin (3). The bottom of the water bin can abut against the top of the keel to extract coffee. After the extraction is completed, the powder bin (3) can be inverted on the top of the water bin (2), and the top edge of the water bin (2) is arranged in the receiving groove.

8. The portable semi-automatic drip coffee extraction device according to claim 2, characterized in that, It further includes a blowing device (10). An air inlet channel (512) is arranged inside the guide rod (51). One end of the air inlet channel (512) can be connected to the blowing device (10) inserted on the guide rod (51), and the other end is arranged on the guide rib surface (511) and communicated with the powder bin (3) through an air outlet hole (513). The bottom of the water bin (2) can be clamped with a lap joint sleeve plate (9).

9. A portable semi-automatic drip coffee extraction device according to claim 1, characterized in that, It further includes a coffee grinder (12) that can be stored between the cup body (4) and the powder bin (3). The coffee grinder (12) includes a motor bin (121), a bean bin (122), and a powder collection bin (123). A motor (121a), a driving rod (121b), and a driving gear set are arranged in the motor bin (121). The output end of the motor is rotationally connected to the driving rod (121b) through the driving gear set. A driven rod (122a) and a cutter (122b) are arranged in the bean bin (122). Clamping structures are arranged on both the motor bin (121) and the bean bin (122). The motor bin (121) can be installed on the top of the bean bin (122) through the clamping structure. The powder collection bin (123) is installed at the bottom of the bean bin (122) through a clamping platform structure. The bottom of the driving rod (121b) is connected to the top of the driven rod (122a). The motor (121a) drives the cutter (122b) to rotate for grinding beans by driving the driving rod (121b) and the driven rod (122a) to rotate. The lower part of the bean bin (122) can be received in the powder collection bin (123), and the motor bin (121) can be received in the bean bin (122). When the motor bin (121) is received in the bean bin (122), the driving rod (121b) is sleeved outside the driven rod (122a).

10. A portable semi-automatic drip coffee extraction device according to claim 9, characterized in that, The clamping structure on the motor bin (121) is an elastic clamping pin (121e) provided at the bottom of the motor bin (121) and extending radially outward. The clamping structure on the bean bin (122) is a clamping groove (122e) provided on the wall of the bean bin (122). After the elastic clamping pin pops outwards through the clamping groove, the motor bin (121) is clamped on the top of the bean bin (122). An external force can drive the elastic clamping pin to retract inwards and withdraw from the clamping groove, and enable the motor bin (121) to slide into the bean bin (122) for storage, or, The clamping structure on the motor bin (121) is an L-shaped slideway (121f). The L-shaped slideway includes a first slideway (121g) arranged horizontally and a second slideway (121h) connected to one end of the first slideway and extending vertically upwards. The clamping structure on the bean bin (122) is a radial clamping pin (122f) provided on the wall of the bean bin. The inner side of the radial elastic clamping pin can slide in the first slideway or the second slideway. When the radial clamping pin is in the first slideway, the motor bin (121) is clamped on the top of the bean bin (122). When the radial clamping pin slides from the first slideway into the second slideway and is at the top of the second slideway, the motor bin (121) is stored inside the bean bin (122), or, The clamping structure on the motor bin (121) is a clamping slideway (121j). The clamping slideway is vertically arranged on both sides of the motor bin (121), and a fixed clamping groove (121k) is provided in the clamping slideway. The clamping structure on the bean bin (122) is a radial elastic clamping pin (122i) provided on the wall of the bean bin (122). When the inner side of the radial elastic clamping pin enters the fixed clamping groove, the motor bin (121) is clamped on the top of the bean bin (122). When an external force pulls the radial elastic clamping pin outwards, the inner side of the radial elastic clamping pin is moved out of the fixed clamping groove, and the motor bin (121) can be stored inside the bean bin (122).

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