Coffee machine capable of automatically grinding beans, pressing powder and brewing

Abstract

The utility model provides a coffee machine with automatic bean grinding, powder pressing and brewing functions, which relates to the technical field of coffee machines and comprises a bean grinding component and a brewing component, the bean grinding component is used for grinding coffee beans, the brewing component comprises a water filling seat, the water filling seat is inserted into a stamping body in a sliding manner, and the stamping body is connected with a pressing seat body. When the water filling base pumps water, water pressure is generated to enable the stamping body to push the pressing base body to press down and compact coffee powder, and brewing is completed. The coffee machine has the beneficial effects that the coffee powder box capable of automatically moving and the pressing seat body capable of automatically pressing powder are arranged, coffee beans are filled into the coffee powder box after being ground in the bean grinding assembly and move below the brewing assembly in the equipment, the pressing seat body compacts the coffee powder, and then the coffee powder is automatically brewed; coffee beans and coffee powder move in the equipment, waste caused by scattering of the coffee powder in the moving process is avoided, the situation that the taste of the coffee powder is affected due to external pollution is also avoided, and the flavor and taste of coffee can be better guaranteed through the fully-closed transfer technology.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, and in particular to an automatic coffee machine for grinding, tamping and brewing coffee beans. Background Technology

[0002] With the widespread dissemination of coffee culture globally and consumers' increasing demands for coffee quality, the application needs of coffee machines in the market are gradually developing towards diversification and intelligence. Coffee machines are no longer limited to home and office use, but are widely deployed in various public places such as coffee shops, hotels, airports, and gas stations. These different application scenarios have different functional requirements for coffee machines, but they generally pursue efficient and convenient operation as well as a personalized coffee-making experience.

[0003] Patent CN221555302U discloses a compact coffee maker that integrates grinding and brewing. This machine includes a casing with a bean hopper and a grinding assembly fixedly mounted on it. The grinding assembly is installed inside the casing and located below the bean hopper. The design aims to secure the bean hopper and grinding assembly to the casing, making it easy to add coffee beans simply by opening the bean hopper lid and pouring them in. However, according to the patent description, although the coffee machine is equipped with a brewing funnel assembly and a support holder, the funnel must be manually inserted into the support holder to catch coffee grounds falling from the gaps in the grinding assembly. The funnel must then be manually removed and reinstalled into the brewing funnel assembly for brewing. This process requires frequent manual intervention, is cumbersome, and reduces ease of use. Utility Model Content

[0004] This invention overcomes the shortcomings of existing technologies by incorporating an automatically movable coffee powder box and an automatically tamping press. After the coffee beans are ground in the grinding assembly, they are filled into the coffee powder box and moved inside the device under the brewing assembly. The press compacts the coffee powder, and then the brewing process is automatic. The entire process, from coffee beans to coffee powder, moves within the device, preventing spillage and waste, and avoiding external contamination that could affect the taste. Compared to traditional methods that require manual tamping and moving of the coffee powder, this fully enclosed transfer technology better preserves the flavor and taste of the coffee, providing a better experience for both the drinker and the operator.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] An automatic coffee grinder, tamper and brewer includes a grinding component and a brewing component. The grinding component is used to grind coffee beans. The brewing component includes a water filling base, which is slidably inserted into a pressing body. The pressing body is connected to a lower pressing body. When water is pumped into the water filling base, water pressure is generated, which causes the pressing body to push the lower pressing body down to compact the coffee powder and complete the brewing.

[0007] Below both the grinding assembly and the brewing assembly is a powder cartridge moving assembly; the powder cartridge moving assembly includes a drive motor and a coffee powder cartridge, and the drive motor drives the coffee powder cartridge to move laterally below both the grinding assembly and the brewing assembly.

[0008] Furthermore, the lower opening of the water filling seat is blocked by a one-way valve, and a one-way valve spring is provided on the side of the one-way valve away from the water filling seat. A return spring is provided between the water filling seat and the stamping body.

[0009] When the water pump starts pumping water, water enters the filling base. At this time, because the lower end of the filling base is blocked by the one-way valve, the water cannot be discharged. The water pressure generated at this time causes the pressing body to press down and compact the coffee powder. As the water pressure continues to increase, it eventually opens the one-way valve, and the water is discharged from the opening at the lower end of the filling base to brew the coffee powder.

[0010] Furthermore, a sealing ring is provided between the water filling base and the stamping body;

[0011] The lower end of the stamping body is connected to the lower pressing seat, and the one-way valve spring is disposed between the lower pressing seat and the one-way valve.

[0012] The water filling base is disposed within the stamped outer shell, which is connected to the coffee machine housing.

[0013] Furthermore, when the water pump starts pumping water, the water pressure rises to 3-8 kg, and the tamping body slides downwards to compact the coffee grounds; the tamping force is 9-12 kg.

[0014] When the water pressure exceeds 9-12 kg, the check valve is opened.

[0015] Furthermore, the powder box moving assembly includes a moving lead screw and a moving slide rail. A drive motor is connected to the moving lead screw, the moving lead screw is threadedly connected to the moving seat, the moving seat is slidably connected to the moving slide rail, and micro switches are provided at both ends of the moving slide rail.

[0016] Furthermore, the movable base is detachably connected to a coffee powder box, and a handle is provided on one side of the coffee powder box;

[0017] The coffee powder box is equipped with a powder separator and a frother; a limiting protrusion is provided at the lower outlet of the coffee powder box, and a limiting groove is provided on the outer side of the lower end of the frother. When the frother is installed inside the coffee powder box, the limiting protrusion and the limiting groove are engaged and connected.

[0018] The frother is equipped with a coffee liquid guide channel that surrounds the coffee liquid outlet.

[0019] Furthermore, the grinding assembly includes an upper grinding blade and a lower grinding blade;

[0020] The upper grinding tool is coaxially connected to the first gear, and the first gear is meshed with the second gear.

[0021] The second gear is coaxially connected to the worm gear, which meshes with the worm, which is driven by a grinding motor.

[0022] Furthermore, the lower grinding blade is disposed in the powder outlet base, which is connected to the bean grinder base.

[0023] Furthermore, a coffee bean guide cover is provided above the grinding base, and the coffee bean guide cover is connected to the coffee bean box.

[0024] Furthermore, the brewing assembly is connected to a water pump via a switching valve, the water pump is connected to the pot body, and the pot body is connected to the water tank.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] The system features an automatically moving coffee powder container and an automatic tamper. After the coffee beans are ground in the grinding unit, they are filled into the coffee powder container and moved inside the machine to the brewing unit. The tamper tamps the coffee powder, and then the brewing process is automatic. The entire process, from coffee beans to coffee powder, moves within the machine, preventing spillage and waste, and avoiding external contamination that could affect the taste. Compared to traditional methods that require manual tampering and movement of the coffee powder, this fully enclosed transfer technology better preserves the flavor and taste of the coffee, providing a better experience for both the drinker and the operator. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the present invention and, together with the embodiments of the present invention, are used to explain the present invention. They do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the overall structure of the coffee machine according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of the coffee machine according to an embodiment of the present invention;

[0030] Figure 3 This is an exploded view of the internal structure of the coffee machine according to an embodiment of the present invention;

[0031] Figure 4 This is a cross-sectional view of the brewing component according to an embodiment of the present invention;

[0032] Figure 5 This is an exploded view of the coffee grinding assembly according to an embodiment of the present invention;

[0033] Figure 6This is a schematic diagram of the powder box moving component structure according to an embodiment of the present utility model;

[0034] Figure 7 This is a cross-sectional view of the coffee powder box and frother according to an embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the foamer structure according to an embodiment of the present invention.

[0036] In the diagram: 1. Grinding assembly; 101. Powder outlet base; 102. Lifting adjustment seat; 1021. External gear ring; 1022. Internal threaded ring; 103. Lower grinding blade holder; 1031. Lifting threaded ring; 104. Grinding base; 105. Lower grinding blade; 106. Upper grinding blade; 107. First gear; 108. Grinding drive motor; 1081. Worm gear; 1082. Worm wheel; 1083. Second gear; 109. Coffee bean guide cap; 2. Brewing assembly; 201. Stamped outer shell; 202. Stamped body; 203. Return spring; 204. Water filling base; 2041, Sealing ring; 205, One-way valve; 206, One-way valve spring; 207, Lowering seat; 3, Powder cartridge moving assembly; 301, Moving screw; 302, Moving slide rail; 303, Drive motor; 304, Micro switch; 305, Moving seat; 306, Coffee powder cartridge; 3061, Powder separator; 3062, Limiting protrusion; 307, Powder cartridge handle; 308, Foamer; 3081, Coffee liquid guide channel; 3082, Coffee liquid outlet; 3083, Limiting groove; 4, Diverter valve; 5, Water tank; 6, Coffee bean box; 7, Cake body; 8, Water pump. Detailed Implementation

[0037] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] like Figures 1 to 8As shown, an automatic coffee grinder, tamper, and brewer includes a grinding component 1 and a brewing component 2. The grinding component 1 is used to grind coffee beans, and the brewing component 2 is equipped with a pressing seat 207 for tamping the coffee powder and brewing. Below both components is a powder cartridge moving component 3. The powder cartridge moving component 3 includes a drive motor 303 and a coffee powder cartridge 306. The drive motor 303 drives the coffee powder cartridge 306 to move laterally in a fully enclosed manner below both the grinding component 1 and the brewing component 2. The drive motor 303 moves the coffee powder cartridge 306 directly below the grinding component 1 to receive the ground coffee powder. After the coffee powder is full, the coffee powder cartridge 306 moves laterally to below the brewing component 2, where the pressing seat 207 first tamps the coffee powder, and then the brewing component 2 drains the coffee powder to brew it. The powder cartridge moving assembly 3 includes a moving lead screw 301 and a moving slide rail 302. A drive motor 303 is connected to the moving lead screw 301. The moving lead screw 301 is threadedly connected to the moving seat 305. The moving seat 305 is slidably connected to the moving slide rail 302. Micro switches 304 are provided at both ends of the moving slide rail 302. When the moving seat 305 moves to both ends, it will trigger the micro switches 304 at both ends respectively. At this time, the system can determine the position of the coffee powder cartridge 306 and thus determine whether the coffee machine needs to grind powder or brew coffee.

[0043] The movable base 305 is detachably connected to a coffee powder container 306, and a container handle 307 is provided on one side of the coffee powder container 306. Traditional coffee machines require manual removal of the coffee powder container after grinding the beans and placement in the brewing unit. This design easily leads to coffee powder spillage during operation, resulting in waste and contamination of the work surface, requiring subsequent cleaning and causing inconvenience to the operator. However, by using a drive motor 303 to move the coffee powder container 306 between the grinding unit 1 and the brewing unit 2, these problems are avoided. Furthermore, since the coffee powder remains inside the machine from grinding to brewing, it is protected from external contamination, further ensuring the flavor of the coffee.

[0044] The coffee powder container 306 has a powder separator 3061 and a frother 308 inside. The powder separator 3061 has many micropores that allow coffee liquid to pass through but not coffee powder. The lower outlet of the coffee powder container 306 has a limiting protrusion 3062, and the lower outer side of the frother 308 has a limiting groove 3083. When the frother 308 is installed inside the coffee powder container 306, the limiting protrusion 3062 and the limiting groove 3083 are engaged and connected. This allows the frother 308 and the coffee powder container 306 to be quickly assembled and disassembled, and also ensures that the two are in a stable position when installed together, so that the frother 308 will not easily shift during the coffee brewing process.

[0045] The frother 308 has a coffee liquid guide channel 3081 inside, which surrounds the coffee liquid outlet 3082. The coffee liquid passes through the coffee liquid guide channel 3081 to extend the liquid path and the contact area with air, so as to realize the fusion of microbubbles in the coffee liquid and ultimately improve the smooth taste of the coffee.

[0046] The brewing assembly 2 includes a water filling base 204, which is slidably inserted into the pressing body 202. The lower opening of the water filling base 204 is blocked by a one-way valve 205. A one-way valve spring 206 is provided on the side of the one-way valve 205 away from the water filling base 204. When the water pump 8 starts to pump water, water enters the water filling base 204. At this time, because the lower end of the water filling base 204 is blocked by the one-way valve 205, the water cannot be discharged. The water pressure generated at this time causes the pressing body 202 to press down and compact the coffee powder. At this time, the pressing body 202 converts the water pressure energy into mechanical energy to achieve pre-compacting of the coffee powder layer. When the water pressure continues to increase, it eventually opens the one-way valve 205, and the water is discharged from the lower opening of the water filling base 204 to brew the coffee powder.

[0047] A return spring 203 is provided between the water filling base 204 and the pressing body 202. After the coffee brewing stops, the brewing component 2 releases pressure through the solenoid valve. At this time, the return spring 203 provides reset power, so that the coffee system returns to its original position, thereby completing one cycle of coffee brewing.

[0048] A sealing ring 2041 is also provided between the water filling base 204 and the stamping body 202; the lower end of the stamping body 202 is connected to the pressure seat 207, and the one-way valve spring 206 is provided between the pressure seat 207 and the one-way valve 205; the water filling base 204 is provided in the stamping shell 201, the stamping shell 201 is connected to the coffee machine shell, and the sealing ring 2041 makes a pressure cavity formed between the water filling base 204 and the stamping body 202, thereby maintaining the pressure of the pressure seat 207.

[0049] When water pump 8 starts pumping water, the water pressure rises to 3-8 kg, and the pressing body 202 slides downward to compact the coffee powder. The pressure required to press the coffee powder is 9-12 kg. When the water pressure exceeds 9-12 kg, the one-way valve 205 is opened, and the brewing assembly 2 achieves a fully automatic coffee brewing process through an integrated fluid control structure. Its core working principle is that when water pump 8 starts, pressurized water flows through the filling seat 204 to form a sealed pressure chamber, forcing the pressing body 202 to press down the coffee powder layer. When the pressure exceeds the threshold set by the one-way valve spring 206, the one-way valve 205 opens to achieve precise water injection. The brewing assembly 2 includes double sealing protection, including the one-way valve 205 seal at the bottom of the filling seat 204 and the sliding seal between the pressing body 202 and the filling seat 204, ensuring pressure stability under various operating conditions.

[0050] This device achieves automated control of the coffee brewing process through the coupling design of fluid dynamics and mechanical transmission. Its innovation lies in transforming the traditional manual compaction process into a pressure-adaptive process, while improving the reliability of equipment operation through a multi-seal protection system, providing a scalable technical solution for the design of professional-grade coffee machines.

[0051] The grinding assembly 1 includes an upper grinding blade 106 and a lower grinding blade 105, the vertical height of which is adjustable. The lower grinding blade 105 is connected to a lower grinding blade base 103, and a lifting threaded ring 1031 is provided on the outside of the lower grinding blade base 103. The lower grinding blade base 103 is connected to a lifting adjustment seat 102, the lifting adjustment seat 102 is provided with an internal threaded ring 1022 inside, and an external gear ring 1021 is also provided on the outside of the lifting adjustment seat 102. The upper grinding blade 106 and the lower grinding blade 105 are precisely linked. The adjustment structure achieves stepless adjustment of the vertical distance between the upper and lower grinding blades through a combination of external gear drive and threaded transmission. Its core working principle is as follows: the external gear meshes with the external gear ring 1021, driving the lifting threaded ring 1031 to rotate and rise along the inner threaded ring 1022 of the lifting adjustment seat 102, thereby adjusting the relative distance between the lower grinding blade seat 103 and the upper grinding blade 106. This design converts rotational motion into linear displacement through the precision transmission characteristics of the threaded pair, ultimately achieving continuous and adjustable control of the fineness of coffee bean grinding.

[0052] The upper grinding blade 106 is coaxially connected to the first gear 107, which meshes with the second gear 1083. The second gear 1083 is coaxially connected to the worm gear 1082, which meshes with the worm 1081. The worm 1081 is driven by the grinding drive motor 108. The lifting adjustment seat 102 is located in the powder outlet base 101, which is connected to the grinding base 104. Through the transmission of the worm gear, the grinding drive motor 108 ultimately drives the upper grinding blade 106 to rotate. Compared with the traditional method of using a motor to directly drive the grinding blade, this transmission method reduces the force on the motor and effectively avoids damage to the motor due to excessive torque.

[0053] A coffee bean guide cover 109 is provided above the grinding base 104. The coffee bean guide cover 109 is connected to the coffee bean box 6. Therefore, the operator only needs to put the coffee beans into the coffee bean box 6. The coffee beans enter the grinding base 104 along the coffee bean guide cover 109 and can be ground as needed.

[0054] The brewing unit 2 is connected to the water pump 8 via the switching valve 4. The water pump 8 is connected to the pot body 7, and the pot body 7 is connected to the water tank 5. The water in the water tank 5 is heated by the pot body 7 and then pressurized by the water pump 8 before being delivered to the brewing unit 2. The switching valve 4 can switch the circuit to select whether the input to the brewing unit 2 is water or steam generated by the pot body 7. The steam generated by the pot body 7 can be used to foam the milk and then to create latte art for the coffee.

[0055] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coffee maker for automatic grinding, powdering and brewing, characterized in that, The application relates to a coffee machine, which comprises a coffee bean grinding assembly (1) and a brewing assembly (2), the coffee bean grinding assembly (1) is used for grinding coffee beans, the brewing assembly (2) comprises a water filling seat (204), the water filling seat (204) is slidingly inserted into a punch body (202), the punch body (202) is connected with a lower pressing seat body (207), and water pressure generated when the water filling seat (204) is pumped with water drives the punch body (202) to push the lower pressing seat body (207) to press and compact coffee powder and complete brewing. The coffee bean grinding assembly (1) and the brewing assembly (2) are both provided below with a powder box moving assembly (3), the powder box moving assembly (3) comprises a driving motor (303) and a coffee powder box (306), the driving motor (303) drives the coffee powder box (306) to move transversely below the coffee bean grinding assembly (1) and the brewing assembly (2).

2. The automatic bean grinding and powder brewing coffee machine according to claim 1, characterized in that, The lower end opening of the water filling seat (204) is blocked by a one-way valve (205), a one-way valve spring (206) is arranged on the side, away from the water filling seat (204), of the one-way valve (205), and a return spring (203) is arranged between the water filling seat (204) and the punch body (202). When the water pump (8) starts to work, water enters the water filling seat (204), at this moment, the lower end of the water filling seat (204) is blocked by the one-way valve (205), so water cannot be discharged, at this moment, water pressure is generated to drive the punch body (202) to punch downwards to compact coffee powder, when the water pressure continues to increase, the one-way valve (205) is finally punched open, and water is discharged from the lower end opening of the water filling seat (204) to brew coffee powder.

3. The automatic bean grinding and powder brewing coffee machine according to claim 2, characterized in that, The water filling seat (204) and the punch body (202) are further provided with a sealing ring (2041) therebetween. The lower end of the punch body (202) is connected with the lower pressing seat body (207), and the one-way valve spring (206) is arranged between the lower pressing seat body (207) and the one-way valve (205). The water filling seat (204) is arranged in a punch shell (201), and the punch shell (201) is connected with a coffee machine shell.

4. The automatic bean grinding and powder brewing coffee machine according to claim 2, characterized in that, When the water pump (8) starts to work, water pressure is increased to 3-8 kg, the punch body (202) slides downwards to compact coffee powder, the compacting force of the coffee powder is 9-12 kg, When the water pressure exceeds 9-12 kg, the one-way valve (205) is punched open.

5. The automatic bean grinding and powder brewing coffee machine according to any one of claims 1 to 4, characterized in that, The powder box moving assembly (3) comprises a moving lead screw (301) and a moving slide rail (302), the driving motor (303) is connected with the moving lead screw (301), the moving lead screw (301) is threadedly connected with a moving seat (305), the moving seat (305) is slidingly connected with the moving slide rail (302), and the moving slide rail (302) is provided with micro switches (304) at two ends.

6. The automatic bean grinding and powder brewing coffee machine according to claim 5, characterized in that, The moving seat (305) is detachably connected with the coffee powder box (306), and the coffee powder box (306) is provided with a powder box handle (307) on one side. The coffee powder box (306) is internally provided with a powder isolation hopper (3061) and a frother (308); a limiting convex particle (3062) is arranged at the lower end outlet of the coffee powder box (306), and a limiting concave groove (3083) is arranged at the lower end outer side of the frother (308); when the frother (308) is installed in the coffee powder box (306), the limiting convex particle (3062) is embeddedly connected with the limiting concave groove (3083). The frother (308) is internally provided with a coffee liquid guide groove (3081) arranged around a coffee liquid outlet (3082).

7. The automatic bean grinding and powder brewing coffee machine according to any of claims 1 to 4, 6, characterized in that, The coffee bean grinding assembly (1) comprises an upper grinding knife (106) and a lower grinding knife (105); The upper grinding knife (106) is coaxially connected with a first gear (107), and the first gear (107) is meshingly connected with a second gear (1083); The second gear (1083) is coaxially connected with a worm wheel (1082), and the worm wheel (1082) is meshingly connected with a worm (1081), which is driven by a coffee bean grinding driving motor (108).

8. The automatic bean grinding and powder brewing coffee machine according to claim 7, characterized in that, The lower grinding knife (105) is arranged in a powder outlet base (101), and the powder outlet base (101) is connected with a coffee bean grinding base (104).

9. The automatic bean grinding and powder brewing coffee machine according to claim 8, characterized in that, The coffee bean grinding base (104) is provided above with a coffee bean guide cover (109), and the coffee bean guide cover (109) is connected with a coffee bean box (6).

10. The automatic bean grinding and powder brewing coffee machine according to claim 9, characterized in that, The brewing assembly (2) is connected with a water pump (8) through a conversion valve (4), the water pump (8) is connected with a kettle body (7), and the kettle body (7) is connected with a water tank (5).

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