Full-automatic immersion type coffee brewing device

Abstract

The invention belongs to the technical field of coffee brewing, and particularly relates to a full-automatic immersion type coffee brewing device which comprises a middle concentric-square-shaped rail, a filtering unit is arranged on the middle concentric-square-shaped rail, an infiltration unit is arranged on one side of the filtering unit, and a brewing unit is arranged on one side of the infiltration unit. The filter drum drives the suspended table to rotate circumferentially, coffee powder sprayed through the nozzle is further sheared, guided and combed through the toothed plate, the front-back outflow uniformity of the coffee powder in unit time is guaranteed, and the surface layer of the initial ring plug is pre-infiltrated through the spraying effect of the water sump while the surface layer of the initial ring plug is pre-infiltrated. Alternating full-coverage pre-infiltration is provided for each single-layer coffee powder layer, meanwhile, flat carding is conducted on each single-layer coffee powder layer through a pressing roller, the uniformity of the front coffee powder layer and the rear coffee powder layer is ensured, pre-infiltration is conducted on the coffee powder layers through a gradual change type wave band groove at another angle, multi-angle infiltration is achieved, a traditional surface layer infiltration barrier is broken through, and the coffee powder layers can be fully soaked. Carbon dioxide is fully discharged, the infiltration uniformity is improved, and the extraction process is accurately controlled.

Description

Technical Field

[0001] The invention belongs to the technical field of coffee brewing, and in particular relates to a full-automatic immersion coffee brewer. Background Art

[0002] Fully automatic hand-poured coffee machine: simulates the manual hand-poured process, focusing on extraction fineness and coffee flavor presentation; users put coffee beans into the bean bin, the machine's built-in metal blade grinds the coffee beans into powder, and the water in the water tank is heated to a suitable temperature by a heater, usually between 90℃-96℃. After that, through the action of the pump, the hot water is evenly sprayed onto the surface of the coffee powder at a certain pressure to form coffee liquid, and finally the coffee grounds are removed by the filter device;

[0003] The pre-infiltration method of the existing coffee brewer is usually: slowly infiltrating from the surface of the coffee powder to the inside, rather than infiltrating from the inside to the outside, that is, when the coffee brewer is pre-infiltrated, hot water is sprayed downward from the top of the coffee powder through a nozzle or a filter unit, and the hot water first contacts the surface of the coffee powder and gradually penetrates into the inside of the coffee powder layer, realizing the infiltration process from the surface to the inside;

[0004] Coffee powder has certain pores and density. When hot water contacts the surface of coffee powder, due to the capillary action between coffee powder particles, hot water gradually penetrates downward along the gaps and pores between particles. If the thickness of the coffee powder layer is uneven or the density is inconsistent (usually, coffee powder is only guided and transported through pipelines. Due to the differences in particle size and shape, pipeline airflow, stacking angle, friction or static electricity, there is a significant difference in the uniformity of the final coffee powder layer), when infiltrating from the surface, hot water is more likely to pass through the "shallow powder bed" or the area with lower density, and the permeability is reduced in the "thick powder bed" or the area with higher density, which affects the uniformity of coffee powder infiltration.

[0005] When the hot water infiltrates from the surface, the flow path of the hot water at the edge of the coffee powder layer is relatively short, and the contact time with the coffee powder is shorter than that in the center. When the hot water flows through, the coffee powder in the edge area is over-extracted; when the coffee powder layer is too thick or compacted too tightly, the hot water infiltrating from the surface is difficult to completely penetrate to the bottom of the coffee powder layer, resulting in the coffee powder at the bottom not being able to fully contact the hot water, resulting in insufficient extraction;

[0006] In addition, there are still different particle sizes among coffee powders under the same grinding environment. Due to different specific surface areas, pore structures and water penetration characteristics, the coffee powder is prone to insufficient infiltration during the infiltration process, affecting the degree of extraction. Summary of the invention

[0007] In order to solve the above problems, the present invention adopts the following technical solution: a fully automatic immersion coffee brewer, comprising a centrally placed circular track, wherein the centrally placed circular track is provided with a filter unit, an infiltration unit is provided on one side of the filter unit, and a brewing unit is provided on one side of the infiltration unit;

[0008] The infiltration unit comprises:

[0009] At least two suspended platforms are arranged in the same radial direction at one end of the central return track;

[0010] The bridge column is mounted at the middle position of the end surface of one side of the suspended platform;

[0011] Angle plate, snap-fitted and installed on the end of the bridge column away from the suspended platform;

[0012] The split cylinder is symmetrically clamped and installed on the end surface of the corner plate close to the suspended platform;

[0013] The ear seats are two in a group and are symmetrically clamped and installed on the end surface of the angle plate away from the suspended platform;

[0014] A connecting shaft is rotatably mounted between the ear seats in the same group;

[0015] The face rings are symmetrically mounted on both ends of the coupling shaft;

[0016] The torsion spring is sleeved and installed on both ends of the connecting shaft and is located between the ear seat and the face ring;

[0017] The nesting plate is clamped and installed in the middle position of the outer wall of the connecting shaft.

[0018] Preferably, the nesting plate is symmetrically clamped with a pressure roller at one end away from the connecting shaft, an angle shovel tangent to the pressure roller is clamped and installed in the middle position of the end face of one side of the nesting plate, a water bin is clamped and installed at the end of the angle shovel away from the nesting plate, the outlet of the water bin is wedge-shaped at the end away from the connecting shaft, and teeth are evenly provided at the outlet end, a water valve is plugged and installed at the end of the water bin away from the angle shovel, interface valves are symmetrically plugged and installed at both ends of the split cylinder, a compensation bin is clamped and installed at the end of the angle shovel facing away from the water bin, and the cross-sectional shape of the compensation bin is Z-shaped, a band groove is provided on the outer wall of the side of the compensation bin away from the end of the connecting shaft, and the width of the band groove decreases gradually in a direction from the connecting shaft end to the pressure roller end, a water diversion valve is plugged and installed on the end face of the compensation bin away from the nesting plate, and a side return rail is provided at one end of the middle return rail.

[0019] Preferably, a chassis is arranged outside the central circular rail, a bean bin is snap-fitted on a horizontal section on one side of the chassis, a water tank is plug-fitted on a vertical section on one side of the chassis, a front end support is snap-fitted on an end of the chassis away from the bean bin, a brewing nozzle is plug-fitted on an end of the front end support close to the bean bin, a control module is slidably snap-fitted on the middle position of the vertical section of the front end support, a brewing head is plug-fitted and rotatably mounted on the end of the control module away from the front end support, a water storage tray is snap-fitted on a horizontal section on a side of the front end support away from the bean bin, a rail is snap-fitted on an opposite surface of the inner wall of the vertical section of the chassis, and the rail is slidably snap-fitted on the central circular rail.

[0020] Preferably, the sub-filtration unit comprises:

[0021] The mouth bracket is slidably mounted on one end of the central return rail;

[0022] The end plate is mounted on the middle position of the inner wall of the horizontal section of the mouth bracket by snap-fitting;

[0023] Angle tube, mounted on the end of the end plate away from the horizontal section of the mouth bracket;

[0024] The filter cartridge is mounted on the inner wall of the angle tube by snap-fitting; in addition, the suspended platform is mounted on the outer bottom wall of the filter cartridge by snap-fitting;

[0025] The layer plate is snap-fitted and installed at the end of the filter cartridge away from the bean bin;

[0026] The number of filter plates is at least two and they are coaxially mounted on the bottom wall of the filter cartridge; in addition, the diameters of the filter plates are not equal and increase linearly;

[0027] The grid ring is plugged and installed at the axis of the filter cartridge;

[0028] The guide ball is mounted on the inner wall of the gate ring away from the bean bin;

[0029] The central gear is mounted on the outer wall of one end of the corner tube close to the bean bin.

[0030] Preferably, a ring cover is slidably mounted between adjacent filter plates, and the size of the ring cover increases gradually along the radial direction of the filter cartridge; a pillar is circumferentially mounted on the end face of the ring cover away from the bean bin, and the pillar passes through the layer plate and the bottom wall of the filter cartridge; a sealing ring is symmetrically arranged on the outer wall of the pillar away from the ring cover, and the sealing ring is located between the layer plate and the bottom wall of the filter cartridge; in addition, the sealing ring close to the layer plate is mounted by snapping with the pillar, and the other sealing ring is mounted by sliding with the outer wall of the pillar and snapping with the bottom wall of the filter cartridge; a sleeve arranged on the same pillar is mounted by snapping between the two sealing rings. Matching compression spring; a one-way valve is evenly inserted and installed on the outer bottom wall of the filter cartridge along its radial direction, and the one-way valve is located between adjacent filter plates; a nozzle is clamped and installed at one end of the one-way valve away from the filter cartridge, and the cross-section of the nozzle is an isosceles trapezoid; in addition, the length of the end of the nozzle away from the one-way valve is equal to the width between the adjacent filter plates; symmetrically distributed tooth plates are clamped and installed on the end faces of both sides of the nozzle, and the two tooth plate notches in the same group are alternately distributed: a micro motor is clamped and installed at one end of the end plate through a mounting seat; a planetary gear meshing with the center gear is clamped and installed at the output end of the micro motor.

[0031] Preferably, the brewing unit comprises:

[0032] The angle bracket is detachably mounted on the bottom wall of the chassis by bolts; in addition, the side return rail is clamped and mounted between the angle bracket and the rail near one end of the front support;

[0033] The U-mouth seat is slidably mounted on the side return rail at the end away from the front support;

[0034] The pneumatic slide rail is mounted in the middle of the vertical outer wall of one side of the U-mouth seat, and the pneumatic slide rail is installed in a sliding manner with the side return rail;

[0035] The brewing cylinder is mounted between the vertical sections of the U-mouth seat by means of a mounting plate;

[0036] The ring windows are evenly inserted into the bottom wall of the brewing tube and evenly distributed along the radial direction of the brewing tube; in addition, the opening of the ring windows faces one end of the central return rail;

[0037] There are two electric gas rods, which are symmetrically mounted on the inner wall of the horizontal section of the U-mouth seat;

[0038] A decorative plate is mounted on the end of the electric gas rod close to the brewing cylinder, and the number is one;

[0039] The vertical rod is evenly clamped and installed on the end surface of the decorative plate away from the electric gas rod, and the vertical rod passes through the bottom wall of the brewing tube;

[0040] The ring plug is installed between adjacent ring windows by sliding engagement, and is installed by engagement engagement with the vertical rod at the corresponding position.

[0041] Preferably, a pressure valve connected to the brewing cylinder is installed in the middle of the outer wall of one side, a grinding bin is installed in the bean bin close to one end of the central return rail, an electric lifting column is installed in the middle of the inner wall of the chassis top cover, an axle seat is installed in the end of the suspension rod close to the central return rail, and a punch seat matching the gate ring is installed on the outer wall of the axle seat in a sliding manner.

[0042] Preferably, the centrally placed circular rail is clamped and installed with a hanging plate at one end close to the front end support, an electric telescopic rod is clamped and installed at the middle position of the end face of the hanging plate close to the side circular rail, an end plate is clamped and installed at one end of the electric telescopic rod away from the shaft seat, vertical rods are evenly clamped and installed at one end of the end plate away from the electric telescopic rod, a brewing shaft compatible with the ring plug is clamped and installed at one end of the vertical rod away from the end plate, an angle valve is plugged and installed on the end face of the brewing shaft close to the end plate, and a water outlet is provided on the end face of the brewing shaft away from the end plate.

[0043] Preferably, the internal cross-sectional shape of the end of the shaft seat away from the electric lifting column is adapted to the guide ball, and the diameter of the shaft seat is equal to the inner diameter of the gate ring, and the vertical distance between the end of the shaft seat away from the electric lifting column and the end of the punch seat away from the electric lifting column is equal to the vertical distance between the end of the gate ring close to the bean bin and the notch on its outer wall.

[0044] Preferably, the vertical distance between the end of the tooth plate away from the angle tube and the bottom wall of the filter cartridge is smaller than the vertical distance between the outer wall of the pressure roller away from the angle tube and the bottom wall of the filter cartridge, and the width of the compensation bin away from the angle tube is equal to the width of the ring window opening.

[0045] The method for infiltrating coffee powder in a fully automatic coffee machine adopts the above-mentioned fully automatic immersion coffee brewer to provide a sufficient infiltration method, and the specific steps are as follows:

[0046] S1: First, the angle tube is controlled to be in positive relative distribution with the grinding bin through the mouth bracket, and then moves toward the bean bin under the guidance and support of the bar rail through the middle return rail until the grinding bin enters a certain distance inside the grid ring. After that, the planetary gear is driven by the micro motor and meshes with the central gear, so that the angle tube synchronously drives the filter cartridge to rotate a specified number of circles under the support of the mouth bracket;

[0047] S2: Then, the filter cartridge is controlled to move through the linkage between the central return rail and the mouth bracket until it is in positive relative distribution with the punch seat. After that, the shaft seat enters the inside of the gate ring under the control of the electric lifting column until the punch seat contacts the ring cover. Finally, the punch seat continues to move under the guidance of the shaft seat. At this time, the one-way valve guides the coffee powder between the filter plates to the nozzle area, and after being combed by the tooth plate, it is evenly laid on the end face of the ring plug.

[0048] At the same time, the suspended platform rotates synchronously under the synchronous control of the filter cartridge. During this process, the water tank evenly sprays the liquid into each single layer of coffee powder. The electric gas rod is raised and lowered to control the consistency of the distance between the coffee layer on the surface of the ring plug and the nozzle. The pressure roller is used to further ensure the structural flatness and stability of the coffee layer after spraying.

[0049] S3: The rear end plate is controlled by the electric telescopic rod and synchronously drives the vertical rod to control the movement of the brewing axis toward the brewing cylinder. At the same time, the external hot water is guided between the brewing cylinder and the brewing axis through the angle valve. In the process of continuous compression and pressure increase, the coffee liquid is forced to flow out of the pressure valve to the brewing spout.

[0050] The present invention has the following beneficial effects:

[0051] 1. The present invention synchronously controls the filter cylinder through the angle cylinder to drive the suspended table to rotate circumferentially, and further shears and guides the coffee powder sprayed through the nozzle through the tooth plate, thereby ensuring the uniformity of the front and rear outflow of the coffee powder per unit time to a certain extent. Through the spraying effect of the water tank, the initial ring plug surface is provided with pre-infiltration, and each single layer of coffee powder is provided with alternating full-coverage pre-infiltration. At the same time, each single layer of coffee powder is flattened and combed by the pressure roller to ensure the uniformity of the front and rear coffee powder layers, and the coffee powder layer is pre-infiltrated at another angle through the gradient band groove to achieve multi-angle infiltration, break the traditional surface infiltration barrier, fully discharge carbon dioxide, improve the infiltration uniformity, and accurately control the extraction process.

[0052] 2. The present invention provides centrifugal force to the coffee powder between the internal filter plates through the high-speed rotation of the filter cartridge. After that, the coffee powder of different particle sizes is distributed in a stepped manner in the radial direction of the filter cartridge. At the same time, the nozzle diameter, the band slot gradient equation and the water tank outlet diameter of the corresponding area are linearly changed to achieve local-to-local single targeted infiltration, unify the infiltration degree between coffee powders of different particle sizes, reduce the problem of over-infiltration or insufficient infiltration, improve the consistency and uniformity before and after infiltration, and ensure the consistency of coffee taste before and after.

[0053] 3. The present invention controls the decorative plate through an electric gas rod, which synchronously drives the vertical rod to cause the ring plug to shrink linearly and gradiently toward the horizontal section of the U-mouth seat, so as to achieve, when the filter cartridge rotates one circle, the vertical distance between the nozzle spraying the coffee powder layer on the surface of the ring plug and the ring plug is constant, thereby ensuring the feasibility of the pre-infiltration plan for each single layer of the coffee powder layer, and at the same time improving the consistency of each single layer of coffee powder before and after laying, thereby improving the uniformity of coffee infiltration. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0055] Figure 2 It is a cross-sectional view showing the internal structure of the chassis of the present invention.

[0056] Figure 3 It is a plane display diagram of the internal structure of the chassis of the present invention.

[0057] Figure 4 It is a diagram showing the local structure of the filtration unit in the present invention.

[0058] Figure 5 This is a diagram showing the filtration unit in the present invention from another viewing angle.

[0059] Figure 6 It is a diagram showing the internal structure of the filter cartridge and the corner cartridge of the present invention.

[0060] Figure 7 The present invention is attached Figure 6 A schematic diagram of the enlarged local structure in the middle.

[0061] Figure 8 It is a three-dimensional display diagram of the one-way valve of the present invention and the structure thereon.

[0062] Fig. 9 It is a three-dimensional display diagram of the electric lifting column and the structure thereon of the present invention.

[0063] Fig.10 It is a three-dimensional display diagram of the local structure of the brewing unit in the present invention.

[0064] Fig.11 The present invention is attached Fig.10 Center left view.

[0065] Fig.12 It is a three-dimensional display diagram of the local structure of the infiltration unit in the present invention.

[0066] Fig.13 It is a three-dimensional display diagram of the local structure of the infiltration unit in the present invention.

[0067] Fig.14 The present invention is attached Fig.13 The structure is shown from another perspective.

[0068] Fig.15 It is a three-dimensional display diagram of the local structure of the brewing unit of the present invention.

[0069] Numbers in the figure: 1, center-mounted return rail; 2, filter unit; 3, infiltration unit; 4, brewing unit;

[0070] 11. Chassis; 12. Bean bin; 13. Water tank; 14. Front support; 15. Brewing nozzle; 16. Control module; 17. Brewing head; 18. Water storage tray; 19. Rails;

[0071] 21. Mouth bracket; 22. End plate; 23. Angle tube; 24. Filter cartridge; 25. Layer plate; 26. Filter plate; 27. Grid ring; 28. Guide ball; 29. ​​Center gear;

[0072] 211, ring cover; 212, pillar; 213, sealing ring; 214, compression spring; 215, one-way valve; 216, nozzle; 217, gear plate; 218, micro motor; 219, planetary gear;

[0073] 31. Suspended platform; 32. Bridge column; 33. Angle plate; 34. Separated cylinder; 35. Ear seat; 36. Connecting shaft; 37. Face ring; 38. Torsion spring; 39. Nesting plate;

[0074] 311, press roller; 312, angle shovel; 313, water tank; 314, water valve; 315, interface valve; 316, compensation tank; 317, band trough; 318, water diversion valve; 319, side return rail;

[0075] 41. Angle bracket; 42. U-mouth seat; 43. Pneumatic slide rail; 44. Brewing tube; 45. Ring window; 46. Electric gas rod; 47. Decorative plate; 48. Vertical rod; 49. Ring plug;

[0076] 411, pressure valve; 412, grinding chamber; 413, electric lifting column; 414, shaft seat; 415, punch seat;

[0077] 421. hanging plate; 422. electric telescopic rod; 423. end plate; 424. vertical rod; 425. brewing shaft; 426. angle valve. DETAILED DESCRIPTION

[0078] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0079] It should be noted that the terms “vertical”, “horizontal”, “left”, “right” and similar expressions used in this document are only for the purpose of explanation and do not represent the only implementation method.

[0080] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0081] Reference Figure 2 , Figure 3 and Figure 4 It can be seen that the fully automatic immersion coffee brewer comprises a central circular track 1, the central circular track 1 is provided with a filter unit 2, a side of the filter unit 2 is provided with an infiltration unit 3, and a side of the infiltration unit 3 is provided with a brewing unit 4;

[0082] Reference Figure 1 , Figure 2 and Figure 3 It can be seen that a chassis 11 is arranged outside the central circular rail 1, a bean bin 12 is snap-fitted to a horizontal end of one side of the chassis 11, a grinding bin 412 is snap-fitted to an end of the bean bin 12 close to the central circular rail 1, a water tank 13 is plug-fitted to a vertical section of one side of the chassis 11, a front end support 14 is snap-fitted to an end of the chassis 11 away from the bean bin 12, a brewing nozzle 15 is plug-fitted to an end of the front end support 14 close to the bean bin 12, a control module 16 is slidably snap-fitted to an intermediate position of the vertical section of the front end support 14, a brewing head 17 is plug-fitted and rotatably mounted to an end of the control module 16 away from the front end support 14, a water storage tray 18 is snap-fitted to a horizontal section of a side of the front end support 14 away from the bean bin 12, a rail 19 is snap-fitted to an opposite surface of the inner wall of the vertical section of the chassis 11, and the rail 19 is slidably snap-fitted to an intermediate position of the vertical section of the front end support 14;

[0083] Two brewing methods of fully automatic coffee machines:

[0084] Brewing method 1:

[0085] The coffee beans in the bean bin 12 are ground into powder by the grinding bin 412, and then the coffee powder is uniformed in particle size by the filter unit 2, and then pre-infiltrated by the infiltration unit 3, and finally brewed into liquid by the brewing unit 4 (the water tank 13 heats and supplies the cold water, which can be heated by a boiler or a heater in the specific implementation);

[0086] Brewing method 2:

[0087] Precondition (not limited to): The user does not like the current coffee bean variety and prefers a certain type of coffee powder:

[0088] The user places the spare coffee powder in a container, and then places the container directly below the brewing head 17 (with the direction of gravity as a reference), and embeds it into the coffee. Then, hot water is pumped into the brewing head 17 through the brewing nozzle 15. Finally, through the cutting and refinement of the holes on the surface of the brewing head 17, the contact saturation between the fluid and the coffee powder layer per unit time is improved, the extraction is enhanced, the taste is unified, and a brewing method different from method 1 is achieved;

[0089] In addition, the rotation (via the worm gear) and the height (electric slider) of the brewing head 17 can be controlled by the control module 16;

[0090] In specific implementation, the control module 16 and the brewing head 17 can be installed in a portable manner (specifically, this can be achieved through active snap-fitting, such as a movable and detachable snap-fitting installation between a part of the control module 16 and the front support 14);

[0091] Water storage tray 18: collects waste water to prevent it from flowing outside the coffee machine, so as to keep the environment around the coffee machine clean and sanitary;

[0092] Observe the water level to visually understand the wastewater collection situation to prevent wastewater overflow from damaging the machine and contaminating the countertop;

[0093] Stabilize the machine and reduce the risk of shaking or tipping due to vibration or external impact;

[0094] Protect the internal parts of the machine, block the waste water from the key parts inside the machine, play a protective role and extend the service life of the coffee machine.

[0095] Reference Figure 3 , Figure 4 and Figure 6 It can be known that the filter unit 2 includes: a mouth bracket 21, which is slidably mounted on one end of the central return rail 1; an end plate 22, which is mounted on the middle position of the inner wall of the horizontal section of the mouth bracket 21; an angle tube 23, which is mounted on the end of the end plate 22 away from the horizontal section of the mouth bracket 21; a filter cartridge 24, which is mounted on the inner wall of the angle tube 23; in addition, a suspended platform 31 is mounted on the outer bottom wall of the filter cartridge 24 by snapping; a layer plate 25, which is mounted on the end of the filter cartridge 24 away from the bean bin 12; filter plates 26, which are at least two in number and are mounted on the bottom wall of the filter cartridge 24 coaxially; in addition, the diameters of the filter plates 26 are not equal and increase linearly; a grid ring 27, which is plugged and mounted at the axis of the filter cartridge 24; a guide ball 28, which is mounted on the inner wall of the grid ring 27 away from the bean bin 12; a central gear 29, which is mounted on the outer wall of the angle tube 23 close to the bean bin 12;

[0096] Reference Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 It can be seen that a ring cover 211 is slidably mounted between adjacent filter plates 26, and the size of the ring cover 211 increases gradually along the radial direction of the filter cartridge 24; a pillar 212 is circumferentially mounted on the end face of the ring cover 211 away from the bean bin 12, and the pillar 212 penetrates the layer plate 25 and the bottom wall of the filter cartridge 24; a sealing ring 213 is symmetrically arranged on the outer wall of the end of the pillar 212 away from the ring cover 211, and the sealing ring 213 is located between the layer plate 25 and the bottom wall of the filter cartridge 24; in addition, a sealing ring 213 is mounted on the side close to the layer plate 25 by snapping with the pillar 212, and another sealing ring 213 is mounted on the outer wall of the pillar 212 by sliding, and is also mounted by snapping with the bottom wall of the filter cartridge 24; a compression spring 214 is mounted between the two sealing rings 213 and is sleeved with the pillar 212;

[0097] A one-way valve 215 is evenly inserted and installed along the radial direction of the outer bottom wall of the filter cartridge 24, and the one-way valve 215 is located between adjacent filter plates 26; a nozzle 216 is clamped and installed at one end of the one-way valve 215 away from the filter cartridge 24, and the cross section of the nozzle 216 is an isosceles trapezoid; in addition, the length of the end of the nozzle 216 away from the one-way valve 215 is equal to the width between adjacent filter plates 26; symmetrically distributed tooth plates 217 are clamped and installed at the end faces of both sides of the nozzle 216, and the notches of the two tooth plates 217 in the same group are alternately distributed: a micro motor 218 is clamped and installed at one end of the end plate 22 through a mounting seat; a planetary gear 219 meshing with the central gear 29 is clamped and installed at the output end of the micro motor 218;

[0098] Reference Figure 3 and Fig. 9 It can be seen that an electric lifting column 413 is clamped and installed in the middle of the inner wall of the top cover of the chassis 11, and an axle seat 414 is clamped and installed at one end of the suspension rod close to the central return rail 1. The outer wall of the axle seat 414 is slidably clamped and installed with a punch seat 415 that matches the gate ring 27.

[0099] The process of regional division of coffee powder with different particle sizes by the filter unit 2:

[0100] First, under the control of the mouth bracket 21, the end plate 22 synchronously drives the angle tube 23 to move horizontally (the direction of gravity is the vertical direction) until the angle tube 23 is directly opposite to the grinding bin 412 (at this time, there is a certain space margin between the two, that is, there is no intersection area); thereafter, the mouth bracket 21 is synchronously driven to move toward the bean bin 12 through the central return rail 1 until the grinding bin 412 is away from one end of the bean bin 12 and enters the specified distance inside the grid ring 27. In specific implementation, the mouth bracket 21 and the central return rail 1 can be driven to move by an electric slider;

[0101] Next, the coffee beans in the bean bin 12 (quantitative quantity) are ground into powder through the grinding bin 412, and continuously fall into the area of ​​the grid ring 27 and the guide ball 28, and under the guidance of the guide ball 28 (promoting uniform distribution of coffee powder, reducing particle aggregation, providing a stable guide path and optimizing the airflow environment, and further improving the uniformity of coffee accumulation), the coffee beans slide into the filter cartridge 24 through the middle opening of the grid ring 27. At this time, the planetary gear 219, driven by the micro motor 218, engages with the central gear 29, prompting the angle tube 23 to synchronously drive the filter cartridge 24 to rotate (the speed can be achieved by changing the current flowing through the micro motor 218), so that the coffee powder flowing into the filter cartridge 24 is filtered and divided into different regions according to the particle size, and the screening and regularization of coffee powders of different particle sizes is achieved (centrifugal force).

[0102] Finally, the central return rail 1 is used to control the mouth bracket 21 to retract to the initial position (the same horizontal position in the vertical state), and the mouth bracket 21 drives the corner tube 23 to move away from the bean bin 12 until the corner tube 23 and the punch seat 415 are oppositely distributed;

[0103] The process of laying coffee powder of different particle sizes in the filter cartridge 24 to the corresponding areas:

[0104] First, the shaft seat 414, under the control of the electric lifting column (refer to the operating principle of the electric telescopic rod) 413, drives the punch seat 415 to continuously move toward the filter cartridge 24 until the annular area corresponding to the punch seat 415 is in contact with the ring cover 211 (there is a gap between the shaft seat 414 to accommodate the filter plate 26) which is oppositely distributed. At the same time, the shaft seat 414 is in contact with the guide ball 28 (at this time, the shaft seat 414 completely seals the gate ring 27 from the external flow channel);

[0105] Next, the punch seat 415 is guided by the shaft seat 414 (in specific implementation, the shaft seat 414 and the punch seat 415 are slidably connected only near one end of the electric gas rod 46, that is, there is still a gap between the shaft seat 414 and the punch seat 415 away from the electric gas rod 46 to accommodate the filter plate 26), and the ring cover 211 is pressed to move toward the layer plate 25 (in this process, the pillar 212 provides stable support and guidance to the ring cover 211 under the dual support of the layer plate 25 and the bottom wall of the filter cartridge 24, and at the same time, through the elastic variable of the compression spring 214, it is ensured that the ring cover 211 can slowly return to the initial state after being compressed to a specified degree, thereby ensuring the continuity of the separation of the front and rear coffee powders). At this time, the coffee powder in the enclosed area of ​​the ring cover 211, the layer plate 25 and the filter plate 26 is under the action of pressure (and the aforementioned enclosed area is always constant, so as to ensure the consistency of the amount of coffee powder emerging from the front and rear one-way valve 215 areas), through the one-way valve 215, emerges from the nozzle 216 area;

[0106] Finally, the symmetrically arranged tooth plate 217 is used to further limit the coffee powder flow area out of the nozzle 216, and the unit coverage volume of the coffee powder per unit time is regulated. At the same time, the coffee powder is further supplemented by cutting and drainage through the staggered slots, thereby improving the uniformity and consistency of the coffee powder outflow.

[0107] Reference Figure 5 , Fig.12 . Fig.13 and Fig.14It can be seen that the infiltration unit 3 includes: at least two suspended platforms 31, which are arranged in the same radial direction at one end of the central return rail 1; a bridging column 32, which is clamped and installed in the middle position of the end surface of one side of the suspended platform 31; an angle plate 33, which is clamped and installed at the end of the bridging column 32 away from the suspended platform 31; a split cylinder 34, which is symmetrically clamped and installed on the end surface of the angle plate 33 close to the suspended platform 31; two ear seats 35 are in a group, and are symmetrically clamped and installed on the end surface of the angle plate 33 away from the suspended platform 31; a connecting shaft 36, which is rotatably mounted between the ear seats 35 of the same group; a face ring 37, which is symmetrically clamped and installed at both ends of the connecting shaft 36; a torsion spring 38, which is sleeved and installed at both ends of the connecting shaft 36 and is located between the ear seat 35 and the face ring 37; a nesting plate 39, which is clamped and installed in the middle position of the outer wall of the connecting shaft 36;

[0108] Reference Fig.12 , Fig.13 and Fig.14 It can be seen that the end of the nesting plate 39 away from the connecting shaft 36 is symmetrically clamped with a pressure roller 311, and the middle position of the end surface of one side of the nesting plate 39 is clamped with an angle shovel 312 tangent to the pressure roller 311. The angle shovel 312 is clamped with a water tank 313 at the end away from the nesting plate 39. The outlet of the water tank 313 away from the connecting shaft 36 is wedge-shaped, and the outlet end is uniformly provided with teeth. The end of the water tank 313 away from the angle shovel 312 is plugged with a water valve 314, and the two ends of the split cylinder 34 are symmetrically plugged and installed. There is an interface valve 315, and a compensation bin 316 is installed at one end of the angle shovel 312 facing away from the water bin 313, and the cross-sectional shape of the compensation bin 316 is Z-shaped. A band groove 317 is provided on the outer wall of the compensation bin 316 on one side away from the connecting shaft 36, and the width of the band groove 317 decreases gradually, and the direction is from the connecting shaft 36 end to the pressure roller 311 end. A water diversion valve 318 is installed on the end face of the compensation bin 316 on the side away from the nesting plate 39, and a side return rail 319 is provided at one end of the middle return rail 1;

[0109] Reference Figure 2 , Fig.10 and Fig.11It can be seen that the brewing unit 4 includes: an angle bracket 41, which is detachably mounted on the bottom wall of the chassis 11 by bolts; in addition, a side return rail 319 is clamped and mounted between the angle bracket 41 and the rail 19 near one end of the front end support 14; a U-mouth seat 42, which is slidably clamped and mounted on the side return rail 319 away from the front end support 14; a pneumatic slide rail 43, which is clamped and mounted in the middle position of the outer wall of the vertical section on one side of the U-mouth seat 42, and the pneumatic slide rail 43 is slidably mounted with the side return rail 319; a brewing cylinder 44, which is clamped and mounted between the vertical sections of the U-mouth seat 42 by a mounting plate; a ring window 45, which is evenly inserted into the bottom wall of the brewing cylinder 44, and along the brewing cylinder 4 4 is evenly distributed in radial direction; in addition, the opening of the ring window 45 faces one end of the central return rail 1; the number of electric gas rods 46 is two, and they are symmetrically mounted on the inner wall of the horizontal section of the U-mouth seat 42; the number of decorative plates 47 is one, which is mounted on the electric gas rod 46 near the end of the brewing cylinder 44; the vertical rod 48 is evenly mounted on the end face of the decorative plate 47 away from the electric gas rod 46, and the vertical rod 48 penetrates the bottom wall of the brewing cylinder 44; the ring plug 49 is slidably mounted between adjacent ring windows 45, and the ring plug 49 is mounted in a matching manner with the vertical rod 48 at the corresponding position; a pressure valve 411 connected to the brewing cylinder 44 is installed in the middle position of the outer wall of one side of the brewing cylinder;

[0110] Reference Figure 3 and Fig.15 It can be seen that a hanging plate 421 is clamped and installed at one end of the central loop rail 1 close to the front end support 14, an electric telescopic rod 422 is clamped and installed at the middle position of the end surface of the hanging plate 421 close to the side loop rail 319, an end of the electric telescopic rod 422 away from the shaft seat 414 is clamped and installed with an end plate 423, and an end of the end plate 423 away from the electric telescopic rod 422 is evenly clamped and installed with vertical rods 424, and an end of the vertical rod 424 away from the end plate 423 is clamped and installed with a brewing shaft 425 compatible with the ring plug 49, and an angle valve 426 is plugged and installed on the end surface of the brewing shaft 425 close to the end plate 423, and the end surface of the brewing shaft 425 away from the end plate 423 has a water outlet hole;

[0111] The inner cross-sectional shape of the shaft seat 414 at the end away from the electric lifting column 413 is adapted to the guide ball 28, and the diameter of the shaft seat 414 is equal to the inner diameter of the gate ring 27, and the vertical distance between the end of the shaft seat 414 away from the electric lifting column 413 and the end of the punch seat 415 away from the electric lifting column 413 is equal to the vertical distance between the end of the gate ring 27 close to the bean bin 12 and the notch of the outer wall thereof;

[0112] The vertical distance between the end of the tooth plate 217 away from the angle tube 23 and the bottom wall of the filter cylinder 24 is smaller than the vertical distance between the outer wall of the pressure roller 311 away from the angle tube 23 and the bottom wall of the filter cylinder 24, and the width of the compensation bin 316 away from the angle tube 23 is equal to the opening width of the annular window 45.

[0113] The infiltration unit 3 has two infiltration modes for the coffee powder layer (complementary and combined infiltration):

[0114] Infiltration method 1:

[0115] When the aforementioned angle tube 23 moves to the position directly below the punch seat 415 under the control of the punch mouth bracket 21;

[0116] First, under the control of the pneumatic slide rail 43, the U-mouth seat 42 synchronously drives the brewing cylinder 44 to move until the brewing cylinder 44 is directly opposite to the angle cylinder 23. In specific implementation, the pneumatic slide rail 43 can be driven to move by an electric slider; and in specific implementation, the initial distance between the tooth plate 217 or the pressure roller 311 and the end surface of the brewing cylinder 44 close to the brewing seat 415 can be adjusted by the vertical movement of the central return rail 1.

[0117] Next, the speed driven by the micro motor 218 is changed (different from the speed of providing the centrifugal state mentioned above - speed reduction), so that the filter cartridge 24 can synchronously drive the suspended platform 31 to rotate at a constant speed for a specified number of circles. In this process, the surface of the ring plug 49 in the passing area is pre-wetted by the water tank 313 (based on the moving direction of the suspended platform 31) under the supply of the divided cylinder 34 (at this time, the surface of the ring plug 49 is not covered with coffee powder, and the nozzle 216 at the corresponding position lags behind the aforementioned water tank 313 by one unit). In specific implementation, a water pump can be added inside the suspended platform 31, and the water valve 314, the interface valve 315 and the external water pump are connected through a hose, and then the water is drained through the external water pump;

[0118] In addition, when the water tank 313 and the surface of the ring plug 49 interact with each other for one circle:

[0119] At this time, the rotating water tank 313 will evenly spray and infiltrate the spraying area of ​​the nozzle 216 that is one unit ahead (the teeth of the water tank 313 can effectively reduce turbulence, regulate the stability and uniformity of the liquid flow before and after, and then improve the uniformity of infiltration). At the same time, the coffee layer is flattened by the pressing roller 311 (at the same time, the corner shovel 312 is used to self-clean the surface of the pressing roller 311 under the flushing action of the water tank 313, thereby improving the smoothness of the surface of the pressing roller 311, ensuring the uniformity of the pressing operation, reducing the loss of coffee powder, and improving the consistency of extraction before and after; the torsion spring 38 is used to increase the nesting plate 39 to provide a certain support force to the pressing roller 311, while avoiding rigid collision caused by rigid connection) to further improve the uniformity and consistency of each layer of coffee powder, thereby improving the consistency of each single layer of coffee powder before and after infiltration;

[0120] Finally, the decorative plate 47, under the control of the electric gas rod 46, synchronously causes the vertical rod 48 to drive the ring plug 49 under the guide support of the brewing cylinder 44 to perform a gradient contraction movement, that is, when the nozzle 216 rotates one circle, the ring plug 49 shrinks one unit toward the horizontal section of the U-mouth seat 42, so as to ensure the constant vertical distance between the nozzle 216 and the coffee powder layer, thereby ensuring the consistency and uniformity of each single layer of coffee powder, and at the same time, each single layer can be pre-infiltrated, the degree of infiltration and uniformity can be improved, and the extraction rate can be guaranteed;

[0121] Infiltration method 2:

[0122] First, the end of the compensation chamber 316 away from the connecting shaft 36 enters the opening of the ring window 45;

[0123] Next, when the suspended platform 31 rotates along with the filter cartridge 24, the compensation chamber 316 rotates synchronously;

[0124] Finally, the water diversion valve 318 and the separation cylinder 34 are connected by a hose, and then under the action of an external water pump, the fluid passes through the band groove 317 (another angle, assuming: the aforementioned infiltration method is horizontal, this time it is vertical), and is sprayed to the ring window 45 of single-side infiltration (the band groove 317 is facing the infiltration direction), and the caliber of the band groove 317 in the gravity direction decreases linearly, thereby reducing the "heavy coverage" over-infiltration phenomenon of the fluid under the action of gravity, further regulating the infiltration identity, and avoiding excessive extraction;

[0125] It is hereby explained that for coffee particles of different particle sizes (under the action of centrifugal force, the particles with relatively large particle sizes are usually on the radially outer side of the filter cartridge 24), therefore, in specific implementation, the diameter of the nozzle 216, the diameter of the water tank 313, and the gradual linear equation of the band slot 317 between the radially outer side and the inner side of the filter cartridge 24 can be gradient (reduced) (specifically, detailed data can be obtained through external calculation), so as to further ensure the relative consistency of infiltration between particles of different particle sizes;

[0126] Final liquid discharging process of brewing unit 4:

[0127] First, the U-mouth seat 42 drives the brewing tube 44 to move until the brewing tube 44 and the brewing axis 425 are oppositely disposed;

[0128] Next, the electric telescopic rod 422, supported by the hanging plate 421, synchronously drives the end plate 423 to move toward the brewing tube 44. At this time, the brewing shaft 425 moves synchronously under the control of the vertical rod 424 until the brewing shaft 425 conflicts with the ring plug 49.

[0129] Finally, the external hot water is guided to the inside of the brewing shaft 425 through the angle valve 426. In specific implementation, the hot water can be delivered to the brewing shaft 425 through a pressure pump and a letter boiler. Finally, the hot water inside the brewing shaft 425 flows through the water outlet hole on its end surface to the space between the brewing shaft 425 and the brewing cylinder 44 where the pressure is increasing. When the pressure is constant, the pressure valve 411 is opened, and the coffee liquid flows to the brewing nozzle 15 through the pressure valve 411. In specific implementation, the brewing nozzle 15 and the pressure valve 411 can be connected by a pipeline.

[0130] Coffee grounds processing:

[0131] The U-mouth seat 42 is retracted, and the internal rotating shaft of the pneumatic slide rail 43 is driven by an external motor to realize the overall flipping of the U-mouth seat 42. Finally, the decorative plate 47 is controlled by the electric gas rod 46 again, so that the vertical rod 48 drives the ring plug 49 to move away from the horizontal section of the U-mouth seat 42 until the coffee grounds are completely separated from the surface of the ring plug 49.

[0132] It is hereby noted that in the corresponding pressure change area (piston type or when the parts are matched from separation to contact), the connection area is provided with sealing gaskets to ensure the sealing.

[0133] The infiltration method of a fully automatic immersion coffee brewer provided by the present invention is as follows: the first step: firstly, the angle tube 23 is controlled to be positively distributed with the grinding bin 412 through the mouth bracket 21, and then the grinding bin 412 is moved toward the bean bin 12 under the guidance and support of the bar track 19 through the central return rail 1, until the grinding bin 412 enters a certain distance inside the gate ring 27, and then the planetary gear 219 is driven by the micro motor 218 to mesh with the central gear 29, so that the angle tube 23 synchronously drives the filter cartridge 24 to rotate a specified number of circles under the support of the mouth bracket 21;

[0134] Step 2: Then, the filter cartridge 24 is controlled to move through the linkage between the central return rail 1 and the mouth bracket 21 until it is directly opposite to the punch seat 415. After that, the shaft seat 414 enters the interior of the gate ring 27 under the control of the electric lifting column 413 until the punch seat 415 contacts the ring cover 211. Finally, the punch seat 415 continues to move under the guidance of the shaft seat 414. At this time, the one-way valve 215 guides the coffee powder between the filter plate 26 to the nozzle 216 area, and the coffee powder is evenly laid on the end face of the ring plug 49 after being combed by the tooth plate 217.

[0135] At the same time, the suspended platform 31 rotates synchronously under the control of the filter cartridge 24. During this process, the water tank 313 sprays liquid to each single layer of coffee powder evenly. The electric gas rod 46 is raised and lowered to control the consistency of the distance between the coffee layer on the surface of the ring plug 49 and the nozzle 216. The pressure roller 311 further ensures the structural flatness and stability of the coffee layer after spraying.

[0136] Step 3: Finally, the end plate 423, under the control of the electric telescopic rod 422, synchronously drives the vertical rod 424 to control the brewing shaft 425 to move toward the brewing cylinder 44. At the same time, the external hot water is guided between the brewing cylinder 44 and the brewing shaft 425 through the angle valve 426. In the process of continuous compression and pressure increase, the coffee liquid is forced to flow out from the pressure valve 411 to the end of the brewing nozzle 15.

[0137] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0138] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fully automatic immersion coffee brewer, comprising a centrally placed return rail (1), characterized in that: The centrally placed circular rail (1) is provided with a filter unit (2), one side of the filter unit (2) is provided with an infiltration unit (3), and one side of the infiltration unit (3) is provided with a brewing unit (4); The infiltration unit (3) comprises: At least two suspended platforms (31) are arranged in the same radial direction at one end of the central return rail (1); A bridging column (32) is mounted at a middle position of an end surface of one side of the suspended platform (31) by clamping; An angle plate (33) is mounted on an end of the bridging column (32) away from the suspended platform (31) by snap-fitting; The separation cylinder (34) is symmetrically clamped and mounted on the end surface of the angle plate (33) close to the suspended platform (31); The ear seats (35) are two in a group and are symmetrically clamped and mounted on the end surface of the angle plate (33) away from the suspended platform (31); A connecting shaft (36) is rotatably mounted between the ear seats (35) in the same group; The face ring (37) is symmetrically mounted on both ends of the connecting shaft (36); The torsion spring (38) is sleeved and installed on both ends of the connecting shaft (36) and is located between the ear seat (35) and the face ring (37); The nesting plate (39) is mounted in a clamping manner at a middle position of the outer wall of the connecting shaft (36).

2. The fully automatic immersion coffee brewer according to claim 1, characterized in that: The end of the nesting plate (39) away from the connecting shaft (36) is symmetrically clamped and installed with a pressure roller (311); an angle shovel (312) tangential to the pressure roller (311) is clamped and installed at the middle position of the end surface of one side of the nesting plate (39); a water tank (313) is clamped and installed at the end of the angle shovel (312) away from the nesting plate (39); the outlet of the water tank (313) away from the connecting shaft (36) is wedge-shaped, and the outlet end is evenly provided with teeth; the end of the water tank (313) away from the connecting shaft (36) is plugged and installed with a water valve (314); and the two ends of the split cylinder (34) are symmetrically plugged and installed with connecting valves. A compensating bin (316) is mounted on the end of the angle shovel (312) facing away from the water bin (313), and the cross-sectional shape of the compensating bin (316) is Z-shaped. A band groove (317) is provided on the outer wall of one side of the compensating bin (316) away from the end of the connecting shaft (36), and the width of the band groove (317) decreases in a gradient from the end of the connecting shaft (36) to the end of the pressure roller (311). A water diversion valve (318) is installed on the end face of the compensating bin (316) away from the nesting plate (39), and a side return rail (319) is provided at one end of the middle return rail (1).

3. The fully automatic immersion coffee brewer according to claim 2, characterized in that: The central return rail (1) is provided with a machine box (11) on the outside, a bean bin (12) is mounted on a horizontal end of one side of the machine box (11), a water tank (13) is mounted on a vertical section of one side of the machine box (11), a front end support (14) is mounted on the end of the machine box (11) away from the bean bin (12), a brewing nozzle (15) is mounted on the end of the front end support (14) close to the bean bin (12), and a water tank (13) is mounted on the vertical section of the front end support (14). A control module (16) is installed in a positional sliding snap-fitting manner, a brewing head (17) is installed in a plug-in and rotatable manner at one end of the control module (16) away from the front end support (14), a water storage tray (18) is installed in a horizontal section of the front end support (14) away from the bean bin (12), a rail (19) is installed in a snap-fitting manner on the opposite surface of the inner wall of the vertical section of the chassis (11), and the rail (19) is installed in a sliding snap-fitting manner with the central return rail (1).

4. The fully automatic immersion coffee brewer according to claim 2, characterized in that: The sub-filtration unit (2) comprises: A mouth bracket (21) is slidably mounted on one end of the central return rail (1); The end plate (22) is mounted on the middle position of the inner wall of the horizontal section of the opening bracket (21); An angle tube (23) is mounted on an end of the end plate (22) at a horizontal section away from the opening bracket (21); The filter cartridge (24) is mounted on the inner wall of the corner tube (23) by snap-fitting; in addition, the suspended platform (31) is mounted on the outer bottom wall of the filter cartridge (24) by snap-fitting; A layer plate (25) is mounted on the filter cartridge (24) at an end away from the bean bin (12) by snap-fitting; The filter plates (26) are at least two in number and are coaxially mounted on the bottom wall of the filter cartridge (24); in addition, the diameters of the filter plates (26) are not equal and increase linearly; The grating ring (27) is plugged and installed at the axis of the filter cartridge (24); A material guide ball (28) is mounted on the inner wall of the gate ring (27) at one end away from the bean bin (12); The central gear (29) is mounted on the outer wall of the corner tube (23) close to one end of the bean bin (12).

5. The fully automatic immersion coffee brewer according to claim 2, characterized in that: A ring cover (211) is slidably mounted between adjacent filter plates (26), and the size of the ring cover (211) increases gradually along the radial direction of the filter cartridge (24); a pillar (212) is circumferentially mounted on the end surface of the ring cover (211) away from the bean bin (12), and the pillar (212) penetrates the layer plate (25) and the bottom wall of the filter cartridge (24); a sealing ring (213) is symmetrically arranged on the outer wall of the end of the pillar (212) away from the ring cover (211), and the sealing ring (213) is located between the layer plate (25) and the bottom wall of the filter cartridge (24); in addition, the sealing ring (213) on the side close to the layer plate (25) is mounted by snapping with the pillar (212), and the other sealing ring (213) is mounted by snapping with the bottom wall of the filter cartridge (24) while being slidably mounted on the outer wall of the pillar (212); a sealing ring (213) is mounted by snapping with the pillar (212) between the two sealing rings (213). 212) is sleeved with a matching compression spring (214); a one-way valve (215) is evenly inserted and installed on the outer bottom wall of the filter cartridge (24) along its radial direction, and the one-way valve (215) is located between adjacent filter plates (26); a nozzle (216) is clamped and installed at one end of the one-way valve (215) away from the filter cartridge (24), and the cross-section of the nozzle (216) is an isosceles trapezoid; in addition, the length of the end of the nozzle (216) away from the one-way valve (215) is equal to the width between adjacent filter plates (26); tooth plates (217) are clamped and installed on the end faces of both sides of the nozzle (216), and the notches of the two tooth plates (217) in the same group are alternately distributed; a micro motor (218) is clamped and installed at one end of the end plate (22) through a mounting seat; a planetary gear (219) meshing with the central gear (29) is clamped and installed at the output end of the micro motor (218).

6. The fully automatic immersion coffee brewer according to claim 1, characterized in that: The brewing unit (4) comprises: The angle bracket (41) is detachably mounted on the bottom wall of the chassis (11) by means of bolts; in addition, the side return rail (319) is clamped and mounted between the angle bracket (41) and the rail (19) at one end close to the front support (14); A U-shaped seat (42) is slidably mounted on an end of the side return rail (319) away from the front end support (14); The pneumatic slide rail (43) is mounted in a middle position of the outer wall of the vertical section of one side of the U-mouth seat (42) by snap-fitting, and the pneumatic slide rail (43) is slidably mounted with the side return rail (319); The brewing cylinder (44) is mounted between the vertical sections of the U-mouth seat (42) by means of a mounting plate; The ring window (45) is evenly inserted into the bottom wall of the brewing tube (44) and evenly distributed along the radial direction of the brewing tube (44); in addition, the opening of the ring window (45) faces one end of the centrally placed return rail (1); There are two electric gas rods (46) which are symmetrically mounted on the inner wall of the horizontal section of the U-shaped seat (42); A decorative plate (47) is mounted on the end of the electric gas rod (46) close to the brewing cylinder (44), and the number of the decorative plate (47) is one; A vertical rod (48) is evenly mounted on the end surface of the decorative plate (47) away from the electric gas rod (46), and the vertical rod (48) penetrates the bottom wall of the brewing cylinder (44); The ring plug (49) is installed between adjacent ring windows (45) by sliding engagement, and the ring plug (49) is installed by engaging and matching with the vertical rod (48) at the corresponding position.

7. The fully automatic immersion coffee brewer according to claim 6, characterized in that: A pressure valve (411) connected to the brewing cylinder (44) is installed in the middle of the outer wall of one side thereof, a grinding bin (412) is installed in a snap-fit ​​manner at one end of the bean bin (12) close to the middle return rail (1), an electric lifting column (413) is installed in a snap-fit ​​manner at the middle of the inner wall of the top cover of the chassis (11), an axle seat (414) is installed in a snap-fit ​​manner at one end of the suspension rod close to the middle return rail (1), and a punch seat (415) matching with the gate ring (27) is installed in a sliding snap-fit ​​manner on the outer wall of the axle seat (414).

8. The fully automatic immersion coffee brewer according to claim 7, characterized in that: A hanging plate (421) is clamped and installed at one end of the central circular rail (1) close to the front end support (14); an electric telescopic rod (422) is clamped and installed at the middle position of the end surface of the hanging plate (421) close to the side circular rail (319); an end plate (423) is clamped and installed at one end of the electric telescopic rod (422) away from the shaft seat (414); vertical rods (424) are uniformly clamped and installed at one end of the end plate (423) away from the electric telescopic rod (422); a brewing shaft (425) compatible with the ring plug (49) is clamped and installed at one end of the vertical rod (424) away from the end plate (423); an angle valve (426) is plugged and installed at the end surface of the brewing shaft (425) close to the end plate (423); and a water outlet is provided at the end surface of the brewing shaft (425) away from the end plate (423).

9. The fully automatic immersion coffee brewer according to claim 6, characterized in that: The inner cross-sectional shape of the end of the shaft seat (414) away from the electric lifting column (413) is adapted to the guide ball (28), and the diameter of the shaft seat (414) is equal to the inner diameter of the gate ring (27), and the vertical distance between the end of the shaft seat (414) away from the electric lifting column (413) and the end of the punch seat (415) away from the electric lifting column (413) is equal to the vertical distance between the end of the gate ring (27) close to the bean bin (12) and the notch on the outer wall thereof.

10. The fully automatic immersion coffee brewer according to claim 6, characterized in that: The vertical distance between the end of the tooth plate (217) away from the angle tube (23) and the bottom wall of the filter tube (24) is smaller than the vertical distance between the outer wall of the pressure roller (311) away from the angle tube (23) and the bottom wall of the filter tube (24), and the width of the end of the compensation bin (316) away from the angle tube (23) is equal to the opening width of the annular window (45).

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