Portable semi-automatic trickling coffee extraction device

Abstract

The utility model 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] This utility model relates to the field of coffee drip extraction technology, and in particular to a portable semi-automatic drip coffee extraction device. Background Technology

[0002] A drip coffee maker is a device that extracts coffee liquid through a dripping process, allowing coffee lovers to easily make coffee with a unique flavor. Its core working principle is to use gravity to slowly drip water through a layer of coffee grounds, extracting the soluble substances from the coffee.

[0003] In existing coffee extraction devices, after hot water is dripped into the coffee hopper for a period of time, a water film forms on the top of the coffee grounds, preventing water from penetrating the coffee grounds. As a result, the water can only flow down from the edge of the coffee hopper, and the coffee grounds at the bottom cannot fully contact the water, thus failing to achieve full extraction and reducing the quality of the coffee liquid and the extraction efficiency. Utility Model Content

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

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A portable semi-automatic drip coffee extraction device includes a lid, a water tank, a coffee powder tank, and a cup.

[0007] The water tank, powder tank, and cup body are arranged sequentially from top to bottom. The cover is fastened to the top of the water tank. A water diversion device is detachably installed at the bottom of the water tank. The lower part of the water diversion device can be inserted into the coffee powder in the powder tank. When the vent hole on the cover is opened, the water in the water tank enters the powder tank through the drain hole at its bottom and the water diversion device to drip-filter and extract the coffee powder. The extracted coffee liquid flows into the cup body.

[0008] Furthermore, the water guiding device includes a guide rod and a powder separator sleeve. The top of the guide rod is inserted into the outer or inner ring of the snap ring at the bottom of the water tank, and the guide rod and the bottom of the water tank are separated by a water flow gap. The powder separator sleeve has a hollow cylindrical structure and is fitted on the upper outer side of the guide rod. The side wall of the guide rod is uniformly provided with multiple sets of vertically arranged guide ridges that extend radially inward from their edges. The water in the water tank flows into the powder tank through the water leakage hole and the guide ridges to extract the coffee powder in the powder tank.

[0009] Furthermore, the guide rod is provided with at least one distribution platform, and the distribution platform has a guide plane arranged in the horizontal direction.

[0010] Furthermore, the guide rod is provided with a segmented stirring structure that deforms upon heating. The segmented stirring structure includes a first memory metal stirring claw and a second memory metal stirring claw. The first memory metal stirring claw is located above the second memory metal stirring claw. In their natural state, the first and second memory metal stirring claws extend vertically downwards. Upon heating, both the first and second memory metal stirring claws can fold upwards. The heat deformation temperature of the first memory metal stirring claw is lower than that of the second memory metal stirring claw.

[0011] Furthermore, it also includes a water level control ring, which has a hollow ring structure and is installed at the bottom of the water tank. During extraction, when the water on top of the coffee powder in the powder tank comes into contact with the water level control ring, a deceleration space is formed between the water, the water level control ring, and the bottom of the water tank, thereby slowing down the outflow speed of the water in the water tank.

[0012] Furthermore, the inner side wall of the powder container is provided with a receiving groove, the water guiding device is removed from the water container, the powder container can form a storage space with the cup body after being inverted, the water container can be placed in the storage space, the top of the water container is located in the receiving groove, and the cover can be fastened to the top of the inverted powder container;

[0013] The lid can also be fastened to the top of the cup containing coffee liquid.

[0014] Furthermore, multiple ribs are vertically spaced on the inner wall of the powder container, and the receiving groove is provided between the top side wall of the ribs and the side wall of the powder container. The bottom of the water tank can abut against the top of the ribs to extract coffee. After extraction, the powder container can be inverted on top of the water tank, and the top edge of the water tank is located in the receiving groove.

[0015] Furthermore, it also includes an air-blowing device. The guide rod has an air intake channel inside. One end of the air intake channel can be connected to the air-blowing device inserted into the guide rod, and the other end is set on the guide ridge surface and communicates with the powder hopper through the air outlet. The bottom of the water hopper can be snapped onto the overlapping sleeve.

[0016] Furthermore, it also includes a coffee grinder that can be housed between the cup body and the powder container, the coffee grinder including a motor compartment, a bean hopper, and a powder collection compartment;

[0017] The motor compartment contains a motor, a drive rod, and a drive gear set. The output end of the motor is rotatably connected to the drive rod via the drive gear set. The bean compartment contains a driven rod and a blade. Both the motor compartment and the bean compartment have snap-fit ​​structures. The motor compartment can be installed on the top of the bean compartment via the snap-fit ​​structures. The powder collection compartment is installed on the bottom of the bean compartment via a locking mechanism. The bottom of the drive rod is connected to the top of the driven rod. The motor drives the drive rod and the driven rod to rotate, which in turn drives the blade to rotate for grinding beans. The lower part of the bean compartment can be stored inside the powder collection compartment. The motor compartment can also be stored inside the bean compartment. When the motor compartment is stored inside the bean compartment, the drive rod is sleeved on the outside of the driven rod.

[0018] Furthermore, the locking structure on the motor compartment is an elastic locking pin located at the bottom of the motor compartment and extending radially outward; the locking structure on the bean compartment is a slot provided on the wall of the bean compartment. After the elastic locking pin pops outward through the slot, the motor compartment locks onto the top of the bean compartment. External force can drive the elastic locking pin to retract inward and exit the slot, allowing the motor compartment to slide into the bean compartment for storage, or...

[0019] The engaging structure on the motor compartment is an L-shaped slide, comprising a first slide arranged horizontally and a second slide connected to one end of the first slide and extending vertically upward. The engaging structure on the bean hopper is a radial locking pin on the hopper wall. The inner side of the radial locking pin can slide within either the first or second slide. When the radial locking pin is in the first slide, the motor compartment is engaged with the top of the bean hopper. When the radial locking pin slides from the first slide into the second slide and is at the top of the second slide, the motor compartment is retracted into the bean hopper.

[0020] The engaging structure on the motor compartment is an engaging slide rail, vertically arranged on both sides of the motor compartment, with a fixing groove within the slide rail; the engaging structure on the bean hopper is a radial elastic pin on the hopper wall, whereby the motor compartment engages with the top of the bean hopper when the inner side of the radial elastic pin enters the fixing groove; external force pulls the radial elastic pin outward, causing the inner side of the radial elastic pin to move out of the fixing groove, allowing the motor compartment to be retracted into the bean hopper, or...

[0021] The latching structure on the motor compartment is a latching claw hinged to the bottom of the motor compartment; the latching structure on the bean compartment is a latching claw groove provided on the top of the bean compartment wall. When the latching claw is arranged radially, the latching claw can be latched into the latching claw groove, at which time the motor compartment is latched onto the top of the bean compartment; when the external force drives the latching claw to rotate to a vertical state, the motor compartment can be stored inside the bean compartment.

[0022] The beneficial effects of this utility model are:

[0023] This utility model discloses a portable semi-automatic drip coffee extraction device. By controlling the opening and closing of the vent, the flow of water in the water tank can be controlled to stop or stop, thus realizing semi-automatic drip coffee extraction. The water guiding device can guide the water flow, increase the contact area between the water and the coffee powder, and improve the fullness of contact between the water and the coffee powder, thereby achieving full extraction of the coffee powder in the powder tank, improving the coffee extraction rate and the extraction quality of the coffee liquid. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of this utility model. Figure 1 (Extraction state);

[0026] Figure 2 This is a front cross-sectional view of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of this utility model. Figure 1 (Extraction state);

[0027] Figure 3 This is a schematic diagram of the structure of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of this utility model. Figure 2 (Storage status);

[0028] Figure 4 This is a front cross-sectional view of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of this utility model. Figure 2 (Storage status);

[0029] Figure 5 This is a front cross-sectional view of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of this utility model. Figure 3 (Includes a coffee grinder);

[0030] Figure 6 This is a schematic diagram of the water tank and water diversion device of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of this utility model;

[0031] Figure 7 This is a schematic diagram of the water tank structure of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of this utility model;

[0032] Figure 8 This is a schematic diagram of the powder compartment structure of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of this utility model;

[0033] Figure 9 This is a schematic diagram of the structure of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 1 of this utility model, showing the lid covering the cup after extraction.

[0034] Figure 10 This is a schematic diagram of the segmented stirring structure of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 2 of this utility model. Figure 1 (Before folding);

[0035] Figure 11 This is a schematic diagram of the segmented stirring structure of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 2 of this utility model. Figure 2 (After folding);

[0036] Figure 12 This is a schematic diagram of the water level control ring structure of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 3 of this utility model;

[0037] Figure 13 This is a schematic diagram of the air-blowing device and the overlapping sleeve of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 5 of this utility model;

[0038] Figure 14 This is a front sectional view of the aeration device and the overlapping tray of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 5 of this utility model;

[0039] Figure 15 This is a schematic diagram of the structure of a portable semi-automatic drip coffee extraction device grinder disclosed in Embodiment Six of this utility model;

[0040] Figure 16 This is a schematic front cross-sectional view of a portable semi-automatic drip coffee extraction device grinder disclosed in Embodiment Six of this utility model. Figure 1 ;

[0041] Figure 17This is a schematic front cross-sectional view of a portable semi-automatic drip coffee extraction device grinder disclosed in Embodiment Six of this utility model. Figure 2 (Assembled state);

[0042] Figure 18 This is a schematic diagram of the structure of a portable semi-automatic drip coffee extraction device grinder disclosed in Embodiment 7 of this utility model (powder collection chamber not shown);

[0043] Figure 19 This is a schematic diagram of the structure of a portable semi-automatic drip coffee extraction device grinder disclosed in Embodiment 8 of this utility model (powder collection chamber not shown);

[0044] Figure 20 This is a schematic diagram of the radial elastic locking pin structure of a portable semi-automatic drip coffee extraction device disclosed in Embodiment 8 of this utility model.

[0045] In the picture:

[0046] 1. Lid; 11. Vent hole; 13. Drinking spout; 14. Rubber cap;

[0047] 2. Water tank; 21. Leakage hole; 22. Snap-fit ​​ring;

[0048] 3. Powder hopper; 31. Receiving groove; 32. Keel;

[0049] 4. Cup body;

[0050] 5. Water flow guiding device; 51. Flow guiding rod; 511. Flow guiding prism; 512. Air inlet channel; 52. Powder separator sleeve; 53. Dispersion platform; 531. Flow guiding plane; 54. Air outlet;

[0051] 6. Segmented mixing structure; 61. First memory metal mixing claw; 62. Second memory metal mixing claw;

[0052] 7. Water height control loop;

[0053] 8. Storage space;

[0054] 9. Overlapping trays;

[0055] 10. Inflator; 101. Rubber inflator head; 102. Air guide rod;

[0056] 12. Coffee grinder;

[0057] 121, Motor compartment; 121a, Motor; 121b, Drive rod; 121c, Driving gear; 121d, Driven gear; 121e, Elastic locking pin; 121f, L-shaped slide rail; 121g, First slide rail; 121h, Second slide rail; 121i, Third slide rail; 121j, Snap-fit ​​slide rail; 121k, Fixed locking slot;

[0058] 122, Bean hopper; 122a, Driven rod; 122b, Cutting tool; 122c, Storage tray; 122d, Snap-fit ​​tray; 122e, Slot; 122f, Radial latch; 122h, Opening / closing door; 122i, Radial elastic latch; 122j, Latch; 122k, Fixing frame; 122l, Spring; 122m, Connecting plate;

[0059] 123. Powder collection bin; 123a. Boss structure. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0061] Example 1:

[0062] like Figure 1-2 The image shows a portable semi-automatic drip coffee extraction device provided in this embodiment, including a lid 1, a water tank 2, a powder tank 3, and a cup body 4;

[0063] During coffee extraction, the water tank 2, powder tank 3, and cup body 4 are arranged sequentially from top to bottom. The cover 1 is fastened to the top of the water tank 2. A water diversion device 5 is detachably installed at the bottom of the water tank 2. The lower part of the water diversion device can be inserted into the coffee powder in the powder tank 3. When the vent 11 on the cover 1 is opened, the water in the water tank 2 enters the powder tank 3 through the drain hole 21 at its bottom and the water diversion device to drip-extract the coffee powder. The extracted coffee liquid flows into the cup body. The water tank structure is as follows. Figure 6-7 As shown, the lid 1 has multiple vent holes, which are sealed by rubber caps 13. When the lid is not on top of the water tank, it is the first stage of water filling. When the lid is on, the water flow stops and the coffee extraction begins in the first blooming stage. After blooming, the flow rate of water in the water tank 2 can be adjusted by controlling the number of open vent holes to perform the second stage of water filling. This allows for the control of the coffee extraction time and progress to meet the taste requirements of different users.

[0064] After coffee extraction is complete, such as Figure 9As shown, the lid 1 is fastened to the top of the cup body 4, and the user can directly drink the coffee from the cup body 4; the lid 1 is provided with a drinking spout 13, and a stopper 14 is provided at the drinking spout to prevent coffee from splashing out when not drinking coffee. Removing the stopper 14 makes it convenient for the user to drink coffee.

[0065] The powder container 3 has an inner sidewall with a receiving groove 31. When the device is not in use and needs to be stored, the water guiding device is removed from the water container 2. When the powder container 3 is inverted, it can form a storage space 8 with the cup body 4. The water container 2 is placed in the storage space, and the top of the water container 2 is located in the receiving groove. The cover 1 is fastened to the top of the inverted powder container 3. The outer wall of the powder container 3 is fitted and locked with the upper edge of the cup body 4, completing the storage of the device. Figure 3-4 As shown.

[0066] Preferably, such as Figure 8 As shown, multiple vertically spaced supports 32 are arranged on the inner wall of the powder container 3. A receiving groove is provided between the top sidewall of the supports 32 and the sidewall of the powder container 3. The bottom of the water tank can abut against the top of the supports to extract coffee. After extraction, the powder container 3 is inverted on top of the water tank 2, with the top edge of the water tank 2 positioned within the receiving groove 31. When stored, the top of the water tank 2 is tucked into the receiving groove 31, thus reducing the height of the device and its volume when stored, making the device more compact and portable, meeting the user's carrying needs. The supports 32 support the filter paper used during coffee extraction, increasing the contact area between the filter paper and the powder container 3, ensuring the stability of the filter paper, and preventing the filter paper from tipping over due to the continuous flow of water during drip filtration, thereby ensuring the smooth drip extraction of coffee.

[0067] This utility model discloses a portable semi-automatic drip coffee extraction device. By controlling the opening and closing of the vent, the flow of water in the water tank can be controlled to stop or stop, thus realizing semi-automatic drip coffee extraction. The water guiding device can guide the water flow, increase the contact area between the water and the coffee powder, and improve the fullness of contact between the water and the coffee powder, thereby achieving full extraction of the coffee powder in the powder tank, improving the coffee extraction rate and the extraction quality of the coffee liquid.

[0068] Preferably, such as Figure 6As shown, the water diversion device includes a guide rod 51 and a powder-separating sleeve 52. The top of the guide rod 51 is inserted into the inner ring of the snap ring 22 provided at the bottom of the water tank 2, and a water flow gap is provided between the guide rod 51 and the bottom of the water tank 2. The powder-separating sleeve 52 has a hollow cylindrical structure and is sleeved on the upper outer side of the guide rod 51. Multiple sets of vertically arranged guide ridges 511 extending radially inward from their edges are evenly provided on the side wall of the guide rod 51. The water in the water tank 2 flows to the powder-separating sleeve 52 through the leakage hole and the guide ridges. Inside chamber 3, the coffee powder in the powder chamber 3 is extracted; the height of the powder separating ring is less than the height of the guide rod 51. The specific height of the powder separating ring can be set according to the actual extraction needs (the height of the coffee powder). The powder separating ring is used to block the upper part of the guide ridge from the coffee powder, preventing the powder from directly contacting the upper part of the guide ridge and hindering the water from flowing down the guide ridge. This ensures that the guide rod 51 of the guide device can better perform its guiding function, ensuring that the water can fully contact the powder at the bottom of the powder chamber 3, and fully drip-filter and extract all the powder in the powder chamber 3.

[0069] Preferably, the guide rod is provided with at least one dispersing platform 53, and the dispersing platform 53 has a guide plane 531 arranged in the horizontal direction; during the process of water flowing down along the guide plane, the guide plane 531 plays the role of guiding part of the water to flow and disperse in the radial direction, expanding the radial diffusion area of ​​the water, so that the coffee powder at the bottom of the powder container 3 can fully contact the water, ensuring that the coffee powder is fully extracted.

[0070] Example 2:

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

[0072] The specific structure of segmented mixing structure 6 is as follows: Figure 10-11 As shown, 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 disposed above the second shape memory metal stirring claw 62. In their natural state, the first shape memory metal stirring claw 61 and the second shape memory metal stirring claw 62 extend vertically downwards. Figure 10 Upon heating, both the first shape memory metal stirring claw 61 and the second shape memory metal stirring claw 62 can fold upwards. Figure 11 The first shape memory metal stirring claw 61 has a lower heat deformation temperature than the second shape memory metal stirring claw 62.

[0073] During the extraction process, the first memory metal stirring claw 61 located on the upper side folds over upon heating, agitating and stirring the coffee powder during this process. This increases the contact area between the powder and water, effectively increasing the expansion of the powder and thus improving extraction efficiency, thoroughness, and uniformity. As hot water continues to flow into the powder container 3, the temperature inside the powder container 3 rises continuously with the increasing volume of hot water. When the temperature reaches the deformation temperature of the second memory metal stirring claw 62, the second memory metal stirring claw 62 deforms and folds over, further agitating the coffee powder during this process. The stirring and agitation increase the contact area between the coffee powder and the water, ensuring thorough extraction. The first memory metal stirring claw 61 and the second memory metal stirring claw 62 work together to stir the coffee powder in segments and at different times, further improving the degree of extraction and ensuring extraction efficiency and quality. In this embodiment, one end of the second memory metal stirring claw 62 is mounted on the distribution platform 53 and located below the guide plane 531; one end of the first memory metal stirring claw 61 is mounted on the mounting ring at the bottom of the powder separator sleeve 52. The memory metal materials of the first memory metal stirring claw 61 and the second memory metal stirring claw 62 are selected from materials with different deformation temperatures. For example, the first memory metal stirring claw 61 is made of nickel-titanium-copper alloy (deformation temperature of 75℃-85℃), and the second memory metal stirring claw 62 is made of iron-manganese-silicon alloy (deformation temperature of 90℃-110℃).

[0074] Example 3:

[0075] The only difference between this embodiment and Embodiment 2 is that, Figure 12 As shown, in this embodiment, a water level control ring 7 is installed at the bottom of the water tank 2. The water level control ring 7 has a hollow ring structure, and its inner diameter is smaller than that of the powder tank 3. During extraction, when the water on top of the coffee powder in the powder tank 3 comes into contact with the water level control ring 7, a deceleration space is formed between the water, the water level control ring 7, and the bottom of the water tank 2. The formation of this deceleration space reduces the pressure inside the powder tank 3, thus slowing down the outflow rate of the water in the water tank 2. This prolongs the contact time between the water and the coffee powder, allowing for sufficient contact and extraction, ensuring the flavor of the extracted coffee liquid and improving its quality. In addition, the water level control ring 7 can also effectively prevent the water from entering the powder tank 3 and causing the coffee powder to absorb water and expand, resulting in the water film on the top of the powder being too high and causing the liquid to flow out from the top of the powder tank 3, thus preventing extraction failure. When the water level in the water tank drops, it breaks the air pressure resistance in the deceleration space and continues to maintain a normal water flow rate for extraction.

[0076] Example 4:

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

[0078] Example 5:

[0079] The only difference between this embodiment and Embodiment 1 is that, Figure 13-14 As shown, in this embodiment, the bottom of the water tank 2 can be snapped into the overlapping sleeve 9, and the water flow guiding device 5 is connected to the air blowing device 10; the overlapping sleeve can be fitted onto the bottom of the water tank 2 and extends outward along the radial direction of the water tank 2, which is convenient for matching powder tanks 3 of different diameters, making it more adaptable. At the same time, the detachable setting will not affect the storage of the water tank 2, greatly improving the flexibility and convenience of use.

[0080] The guide rod 51 is provided with an air inlet channel. One end of the air inlet channel can be connected to the air blowing device inserted into the guide rod 51, and the other end is set on the guide ridge surface and communicates with the powder bin 3 through the air outlet 511.

[0081] like Figure 14 As shown, the aeration device 10 includes a rubber aeration head 101 and an air guide rod 102 connected to the rubber aeration head. The powder container 3 has an insertion hole on its side wall, with a rubber plug at the insertion hole. When the water flow becomes very slow after a period of extraction, the rubber plug on the powder container 3 can be removed, and the air guide rod can be inserted into the powder container 3, passing through the through hole on the water height control ring 7, and inserted into the connection hole on the guide rod 51. This connects the elastic rubber aeration head with the air intake channel in the center of the guide rod 51. Under the pressure of the elastic rubber aeration head, airflow is generated. The airflow then passes through the air guide rod and the air intake channel, and finally exits from the air outlet 54 on the guide ridge surface, aerating the mixture of coffee powder and water, increasing the fluffiness of the coffee powder, i.e., increasing the gaps between coffee powder particles (reducing the density of coffee powder particles). This allows the water and coffee powder particles in the powder container 3 to fully contact, thereby ensuring extraction efficiency and extraction effect. Furthermore, the aeration device is detachable, does not affect the storage of the water container 2, and is flexible and convenient to use.

[0082] Example 6:

[0083] A type of coffee grinder, such as Figure 15-17 As shown, it includes a motor compartment 121, a bean compartment 122, and a powder collection compartment 123;

[0084] The motor compartment 121 houses a motor 121a, a drive rod 121b, and a drive gear set. The motor output is rotatably connected to the drive rod 121b via the drive gear set. The upper and lower ends of the drive rod 121b are rotatably connected to the motor compartment 121 via bearings. The bean compartment 122 houses a driven rod 122a and a blade 122b. Both the motor compartment 121 and the bean compartment 122 are equipped with a snap-fit ​​structure. During grinding, the motor compartment 121 can be mounted on top of the bean compartment 122 via the snap-fit ​​structure. The powder collection chamber 123 is installed at the bottom of the bean hopper 122 via a mounting structure. The bottom of the drive rod 121b is connected to the top of the driven rod 122a. The motor drives the cutter 122b to rotate by driving the drive rod 121b and the driven rod 122a to grind the beans. After grinding, the lower part of the bean hopper 122 can be stored in the powder collection chamber 123, and the motor chamber 121 can be stored in the bean hopper 122. At this time, the drive rod 121b is sleeved on the outside of the driven rod 122a.

[0085] After the motor compartment 121 is housed in the bean compartment 122, the entire grinder can be placed in the storage space formed by the powder compartment 3 (upside down) and the water compartment 2.

[0086] The motor output end is provided with a driving tooth 121c, and the drive rod 121b is provided with a driven tooth 121d. The driving tooth and the driven tooth mesh with each other. The drive rod 121b has a hollow hexagonal prism structure, and the driven rod 122a has a hexagonal prism structure. When working, the motor compartment 121 is engaged with the top of the bean compartment 122, and the bottom of the drive rod 121b is sleeved on the outside of the top of the driven rod 122a. After the motor starts, the drive rod 121b is driven to rotate through the motor output end, the driving tooth, and the driven tooth. The drive rod 121b drives the driven rod 122a to rotate, thereby driving the cutter 122b to rotate and grind and crush the coffee beans. After the coffee beans are ground into powder, the coffee powder in the powder collection compartment 123 is transferred to the powder compartment 3 to complete the subsequent coffee extraction.

[0087] In this embodiment, the locking structure on the motor compartment 121 is an elastic locking pin 121e located at the bottom of the motor compartment 121 and extending radially outward. The locking structure on the bean hopper 122 is a slot 122e provided on the wall of the bean hopper 122. After the elastic locking pin pops outward through the slot, the motor compartment 121 locks onto the top of the bean hopper 122. External force can drive the elastic locking pin to retract inward and exit the slot, allowing the motor compartment 121 to slide into the bean hopper 122 for storage. The outer diameter of the motor compartment 121 is smaller than the inner diameter of the bean hopper 122, facilitating its storage within the bean hopper 122. After extraction and consumption, the grinder is stored between the cup body 4 and the powder hopper 3, as shown below. Figure 5As shown. The elastic locking pin can be retracted inward and removed from the slot by external force, moving the motor compartment away from the bean compartment, thus separating the motor compartment from the bean compartment, making it easier to clean and maintain the grinder.

[0088] Furthermore, in this embodiment, the bottom of the coffee grinder's bean hopper 122 can be stored inside the powder collection chamber 123, as specifically achieved in the following structure:

[0089] like Figure 15 As shown, the bean hopper 122 has two sets of retaining structures on its wall: a storage retaining structure 122c and a receiving retaining structure 122d. The storage retaining structure is higher than the receiving retaining structure. The powder collection chamber 123 has a protrusion structure 123a on its side wall. When coffee beans are being ground, the bottom surface of the receiving retaining structure abuts against the top surface of the protrusion structure, and the bean hopper 122 abuts against the top of the powder collection chamber 123. After the coffee beans are ground, the bean hopper 122 is rotated so that the bottom surface of the storage retaining structure abuts against the top surface of the protrusion structure. At this time, the bottom of the bean hopper 122 contacts the bottom of the powder collection chamber 123, and the lower part of the bean hopper 122 is stored inside the powder collection chamber 123. This coffee grinder significantly reduces its size after storage by retracting the lower part of the bean hopper 122 into the powder collection chamber 123 and by retracting the motor chamber 121 into the bean hopper 122. This achieves efficient use of space and significantly improves the portability of the product.

[0090] The bean hopper 122 is equipped with an opening and closing door 122h. When grinding beans is needed, open the opening and closing door, put the coffee beans into the bean hopper 122, close the opening and closing door, and start the motor to grind the beans.

[0091] Example 7:

[0092] A coffee grinder, differing from Example 6 only in that, as Figure 18As shown, in this embodiment, the locking structure on the motor compartment 121 is an L-shaped slide rail 121f, and the locking structure on the bean compartment 122 is a radial locking pin 122f provided on the compartment wall; the L-shaped slide rail includes a first slide rail 121g arranged laterally and a second slide rail 121h connected to one end of the first slide rail and extending vertically upward; the inner side of the radial locking pin 122f can slide within the first slide rail or the second slide rail. When the radial locking pin is in the first slide rail, the motor compartment 121 is locked to the top of the bean compartment 122. When the radial locking pin is in the first slide rail, the motor compartment 121 is locked to the top of the bean compartment 122. When the first slide slides into the second slide and is at the top of the second slide, the motor compartment 121 is housed inside the bean compartment 122. The lower side of the first slide is connected to the third slide 121i. When it is necessary to remove the motor compartment 121 from the bean compartment 122, rotate the motor compartment 121 so that the inner side of the radial locking pin enters the third slide. Then apply a drive to the motor compartment 121 to move it away from the bean compartment 122, which can separate the motor compartment 121 from the bean compartment 122. This makes it easier to clean the residual coffee bean residue in the bean compartment and motor compartment, and also makes it easier to inspect and replace the parts of the grinder.

[0093] Example 8:

[0094] A coffee grinder, differing from Example 6 only in that, as Figure 19 As shown, in this embodiment, the snap-fit ​​structure on the motor compartment 121 is a snap-fit ​​slide 121j, and the snap-fit ​​structure on the bean compartment 122 is a radial elastic snap-fit ​​pin 122i provided on the wall of the bean compartment 122; the snap-fit ​​slide is vertically arranged on both sides of the motor compartment 121, and a fixed snap-fit ​​groove 121k is provided in the snap-fit ​​slide; when no external force is applied, under the elastic action of the spring inside the radial elastic snap-fit ​​pin, the inner side of the radial elastic snap-fit ​​pin is arranged in the snap-fit ​​slide, and when the inner side of the radial elastic snap-fit ​​pin enters the fixed snap-fit ​​groove, the motor compartment 121 snaps into the top of the bean compartment 122; when an external force pulls the radial elastic snap-fit ​​pin outward, the inner side of the radial elastic snap-fit ​​pin moves out of the fixed snap-fit ​​groove, and the external force drives the motor compartment to slide into the bean compartment, and the motor compartment 121 is housed inside the bean compartment 122;

[0095] like Figure 20 As shown, the radial elastic locking pin 122i includes a locking pin 122j, a fixing frame 122k, a spring 122l, and a connecting plate 122m; the inner wall of the bean hopper is provided with a fixing frame, one end of the locking pin is located on the outside of the bean hopper, and the other end passes through the fixing frame and extends to the outside of the fixing frame. The locking pin is provided with a connecting plate, and the spring and the connecting plate are located inside the fixing frame. The two ends of the spring abut against the inner wall of the fixing frame and the connecting plate, respectively.

[0096] Comparative Example 1:

[0097] The only difference between this comparative example and Example 1 is that, in this comparative example, the guide rod 51 does not have a distribution platform 53.

[0098] Comparative Example 2:

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

[0100] Comparative Example 3:

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

[0102] Coffee extraction experiments were conducted using the drip extraction apparatus of Examples 1-3 and Comparative Examples 1-3, respectively. The concentration of extracted coffee (total dissolved solids (TDS), extraction rate, time, and weight of coffee liquid were measured. The experimental parameters are as follows:

[0103] The coffee bean variety was Ethiopian Yirgacheffe washed coffee, with a surface roast level of 78.2, a medium roast level of 97.9, a particle size of 650 μm, a medium-fine grind size of 535, a coffee powder weight of 30 g, a brewing water temperature of 93℃, and a brewing water weight of 320 g. The coffee extraction results are shown in Table 1 below;

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

[0105]

[0106] As shown in the table above, the results of Examples 1-5 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, with an extraction efficiency range of 18%-22% and a coffee concentration range of 1.15-1.35%). In Example 2, the water flow guiding device, combined with the segmented stirring structure 6, improves coffee extraction efficiency and concentration, allowing for more complete dissolution of coffee flavor compounds and a richer flavor profile. In Example 3, the water flow guiding device, combined with the segmented stirring structure 6 and the water height control ring 7, further improves the uniformity and stability of extraction, avoiding localized over-extraction or under-extraction, resulting in a higher coffee concentration. The coffee powder and flavor are more balanced; the water diversion device and water height control ring 7 in Example 4 work together to improve the contact efficiency between coffee powder and water, thereby increasing the concentration of coffee liquid while ensuring extraction efficiency; the airflow from the aeration device 10 in Example 5 can act on the mixture of coffee powder and water, increasing the fluffiness of coffee powder, increasing the gap between powder particles, reducing density, and breaking the compacted state of coffee powder caused by soaking and other factors. After the fluffiness of coffee powder is improved, conditions are created for full contact between water and coffee powder particles, ensuring that the water can extract the effective components in coffee powder more comprehensively and evenly, thereby ensuring extraction efficiency and extraction effect and improving coffee quality.

[0107] A comparison of the results of Example 3 and Comparative Example 3 shows that the water diversion device, the segmented stirring structure 6, and the water height control ring 7 have a significant impact on the coffee extraction efficiency and extraction effect, further demonstrating the importance of their coordination.

[0108] A comparison of the results of Example 1 and Comparative Examples 2-3 shows that the extraction rate and coffee concentration of the drip extraction device with the water diversion device are significantly higher than those without the diversion device. The coffee extraction quality and efficiency are significantly improved, which proves the core role of the water diversion device in improving coffee extraction efficiency and optimizing extraction quality, highlighting the importance of the water diversion device to the coffee extraction results.

[0109] A comparison of the results of Example 1 and Comparative Example 1 shows that setting up a platform structure on the water diversion device can significantly improve both the efficiency and quality of coffee extraction. This fully demonstrates that the distributed platform 53 plays a key role in enhancing the performance of the water diversion device and optimizing the coffee extraction effect, further illustrating the important significance of the structural design of the water diversion device in improving the quality and efficiency of coffee extraction.

[0110] A comparison of the results of Example 3 and Comparative Example 2 shows that if only the water height control ring 7 is set, without the flow guide device and the shape memory metal stirring, although the water in the powder chamber 3 will not overflow during the brewing process, the extraction efficiency and coffee concentration will drop significantly, that is, the extraction effect will be greatly reduced, the coffee flavor will be bland, and it will not achieve the ideal Golden Cup standard taste.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A portable semi-automatic drip coffee extraction device, characterized in that, Includes a lid (1), a water reservoir (2), a powder reservoir (3), and a cup body (4); The water tank (2), powder tank (3) and cup body (4) are arranged sequentially from top to bottom. The cover (1) is fastened to the top of the water tank (2). A water diversion device (5) is detachably installed at the bottom of the water tank (2). The lower part of the water diversion device can be inserted into the coffee powder in the powder tank (3). When the vent hole (11) on the cover (1) is opened, the water in the water tank (2) enters the powder tank (3) through the drain hole (21) at its bottom and the water diversion device to drip extract the coffee powder. The extracted coffee liquid flows into the cup body.

2. The portable semi-automatic drip coffee extraction device according to claim 1, characterized in that, The water guiding device includes a guide rod (51) and a powder separator sleeve (52). The top of the guide rod (51) is inserted into the outer or inner ring of the snap ring (22) at the bottom of the water tank (2), and the guide rod (51) and the bottom of the water tank (2) are provided with a water flow gap. The powder separator sleeve (52) has a hollow cylindrical structure and is sleeved on the upper outer side of the guide rod (51). The side wall of the guide rod (51) is uniformly provided with multiple sets of vertically arranged guide ridges (511) that extend radially inward from its edge. The water in the water tank (2) flows into the powder tank (3) through the water leakage hole and the guide ridges to extract the coffee powder in the powder tank (3).

3. The portable semi-automatic drip coffee extraction device according to claim 2, characterized in that, The guide rod is provided with at least one distribution platform (53), and the distribution platform (53) has a guide plane (531) arranged in the horizontal direction.

4. The portable semi-automatic drip coffee extraction device according to claim 2, characterized in that, The guide rod (51) is provided with a segmented stirring structure (6) that deforms when heated. The segmented stirring structure (6) includes a first memory metal stirring claw (61) and a second memory metal stirring claw (62). The first memory metal stirring claw (61) is located on the upper side of the second memory metal stirring claw (62). The first memory metal stirring claw (61) and the second memory metal stirring claw (62) are naturally arranged to extend vertically downward. When heated, the first memory metal stirring claw (61) and the second memory metal stirring claw (62) can both be folded upward. The heat deformation temperature of the first memory metal stirring claw (61) is lower than that of the second memory metal stirring claw (62).

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

6. The portable semi-automatic drip coffee extraction device according to claim 1, characterized in that, The powder container (3) has an inner side wall with a receiving groove (31). The water guiding device is removed from the water container (2). After the powder container (3) is inverted, it can form a storage space (8) with the cup body (4). The water container (2) can be placed in the storage space (8). The top of the water container (2) is located in the receiving groove (31). The cover (1) can be fastened to the top of the inverted powder container (3). The lid can also be fastened to the top of the cup (4) containing coffee liquid.

7. A portable semi-automatic drip coffee extraction device according to claim 6, characterized in that, Multiple ribs (32) are vertically spaced on the inner wall of the powder container (3). The receiving groove is provided between the top side wall of the rib (32) and the side wall of the powder container (3). The bottom of the water tank can abut against the top of the rib to extract coffee. After extraction, the powder container (3) can be inverted on top of the water tank (2). The top edge of the water tank (2) is located in the receiving groove.

8. A portable semi-automatic drip coffee extraction device according to claim 2, characterized in that, It also includes an air blowing device (10), and the guide rod (51) is provided with an air inlet channel (512). One end of the air inlet channel (512) can be connected to the air blowing device (10) inserted into the guide rod (51), and the other end is set on the guide ridge (511) and communicates with the powder hopper (3) through the air outlet (513). The bottom of the water tank (2) can be snapped onto the overlapping sleeve (9).

9. A portable semi-automatic drip coffee extraction device according to claim 1, characterized in that, It also includes a coffee grinder (12) that can be housed between the cup body (4) and the powder container (3), the coffee grinder (12) including a motor compartment (121), a bean hopper (122) and a powder collection compartment (123); The motor compartment (121) contains a motor (121a), a drive rod (121b), and a drive gear set. The output end of the motor is rotatably connected to the drive rod (121b) through the drive gear set. The bean hopper (122) contains a driven rod (122a) and a cutter (122b). Both the motor compartment (121) and the bean hopper (122) are equipped with snap-fit ​​structures. The motor compartment (121) can be installed on top of the bean hopper (122) through the snap-fit ​​structures. The powder collection compartment (123) is installed on the bean hopper (122) through a locking mechanism. At the bottom, the bottom of the drive rod (121b) is connected to the top of the driven rod (122a). The motor (121a) drives the drive rod (121b) and the driven rod (122a) to rotate, thereby driving the cutter (122b) to rotate and grind the beans. The lower part of the bean hopper (122) can be stored in the powder collection hopper (123). The motor hopper (121) can be stored in the bean hopper (122). When the motor hopper (121) is stored in the bean hopper (122), the drive rod (121b) is sleeved on the outside of the driven rod (122a).

10. A portable semi-automatic drip coffee extraction device according to claim 9, characterized in that, The locking structure on the motor compartment (121) is an elastic locking pin (121e) provided at the bottom of the motor compartment (121) and extending radially outward. The locking structure on the bean compartment (122) is a locking groove (122e) provided on the wall of the bean compartment (122). After the elastic locking pin pops outward through the locking groove, the motor compartment (121) locks onto the top of the bean compartment (122). External force can drive the elastic locking pin to retract inward and exit the locking groove, allowing the motor compartment (121) to slide into the bean compartment (122) for storage, or... The engaging structure on the motor compartment (121) is an L-shaped slide (121f), which includes a first slide (121g) arranged laterally and a second slide (121h) connected to one end of the first slide and extending vertically upward. The engaging structure on the bean hopper (122) is a radial locking pin (122f) provided on the hopper wall. The inner side of the radial locking pin can slide within the first or second slide. When the radial locking pin is in the first slide, the motor compartment (121) is engaged with the top of the bean hopper (122). When the radial locking pin slides from the first slide into the second slide and is at the top of the second slide, the motor compartment (121) is retracted into the bean hopper (122). The snap-fit ​​structure on the motor compartment (121) is a snap-fit ​​slide (121j), which is vertically arranged on both sides of the motor compartment (121). The snap-fit ​​slide is provided with a fixed slot (121k). The snap-fit ​​structure on the bean compartment (122) is a radial elastic pin (122i) provided on the wall of the bean compartment (122). When the inner side of the radial elastic pin enters the fixed slot, the motor compartment (121) snaps into the top of the bean compartment (122). When an external force pulls the radial elastic pin outward, the inner side of the radial elastic pin moves out of the fixed slot, and the motor compartment (121) can be stored inside the bean compartment (122).

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