Semi-automatic coffee machine

Abstract

The utility model discloses a semi-automatic coffee machine. The semi-automatic coffee machine comprises a bean grinding mechanism, a coffee powder conveying device and a powder pressing and brewing mechanism. The bean grinding mechanism is used for grinding coffee beans into coffee powder, and the coffee powder enters the conveying device through the powder inlet. The transfer device comprises an L-shaped shell, a vertical section cavity, a horizontal section cavity, a first rotating wheel and a second rotating wheel, and coffee powder is transferred to the powder pressing brewing mechanism through rotation of the rotating wheels. The powder pressing brewing mechanism is composed of a main screw rod, a fluted disc, a threaded sleeve part, a powder pressing head and a plurality of microswitches and used for controlling the up-down movement of the powder pressing head and the pressing degree of coffee powder. The coffee machine can realize uniform compression and smooth transfer of coffee powder, and is simple and convenient to operate, efficient and practical.

Description

Technical Field

[0001] The utility model relates to the field of coffee machines, in particular to a semi-automatic coffee machine. Background Art

[0002] At present, coffee has become an indispensable beverage in people's daily lives, and more and more people like to make coffee by themselves at home or in the office. However, although the existing fully automatic coffee machines are convenient to operate, they are often expensive and occupy a large space, and are not suitable for home or small office use. Relatively speaking, semi-automatic coffee machines are gradually favored by people because of their moderate price and relatively complete functions.

[0003] The existing semi-automatic coffee machines usually include multiple steps such as grinding beans, tamping powder and brewing. Each step requires manual operation by the user, which not only increases the complexity of the operation, but also easily causes problems such as uneven compaction or insufficient force of the coffee powder during the tamping process, affecting the taste of the coffee. At the same time, during the transfer process of the coffee powder in the existing semi-automatic coffee machines, the coffee powder often gets blocked or accumulates, resulting in unsmooth operation of the equipment and affecting the user experience.

[0004] Therefore, the technical personnel in this field are committed to developing an improved semi-automatic coffee machine to solve the problems existing in the prior art and provide a semi-automatic coffee machine with simple operation, uniform tamping and smooth transfer. Summary of the Utility Model

[0005] To achieve the above object, the utility model provides a semi-automatic coffee machine, comprising:

[0006] A bean grinding mechanism for grinding coffee beans into coffee powder;

[0007] A coffee powder transfer device, comprising:

[0008] An L-shaped housing, which includes a vertical section cavity and a horizontal section cavity;

[0009] A first runner and a second runner, which are respectively arranged in a first circular cavity and a second circular cavity of the horizontal section cavity and are driven to rotate by a motor; for transferring the ground coffee powder from the vertical section cavity to the horizontal section cavity, and then conveying it to the tamping and brewing mechanism by the first runner and the second runner;

[0010] A tamping and brewing mechanism, comprising:

[0011] A main screw, which is provided with a toothed disc, and is driven by a motor to drive a worm to rotate, and the worm drives the toothed disc to drive the main screw to rotate;

[0012] A thread sleeve part and a powder pressing head that cooperate with the main screw; move up and down when the main screw rotates; an upper micro switch and a lower micro switch are arranged on the thread sleeve part to control the movement of the powder pressing head.

[0013] In a preferred embodiment of the present utility model, an upper micro switch is arranged on the thread sleeve part; when the thread sleeve part moves upward along the screw part to the highest position, the upper micro switch thereon is triggered, the motor stops rotating, and the powder pressing head stops moving; at this time, the powder outlet of the coffee powder transfer device leading to the coffee handle opens, and the coffee powder can be conveyed and loaded into the coffee handle.

[0014] In another preferred embodiment of the present utility model, a spring pressing plate connected to the thread sleeve part is further arranged inside the powder pressing head; a plurality of springs are arranged between the spring pressing plate and the powder pressing head; a lower micro switch is arranged on the spring pressing plate; when pressing the coffee powder, the thread sleeve part and the powder pressing head move downward along the screw part until they contact the coffee powder, and at the same time, the powder pressing head closes the powder outlet of the coffee powder transfer device leading to the coffee handle; at this time, the spring pressing plate in the powder pressing head continues to compress the spring and move downward until the lower micro switch thereon is triggered, and the motor stops rotating.

[0015] In another preferred embodiment of the present utility model, on the powder pressing and brewing mechanism, a side micro switch is arranged on the side of the powder pressing head; when there is no coffee powder in the coffee handle or the coffee powder is less, the spring will not be compressed, and the spring pressing plate and the lower micro switch will not continue to move downward in the powder pressing head and be triggered, but the powder pressing head itself will continue to descend, so that the side micro switch is triggered by the powder pressing head, and the motor stops rotating.

[0016] In another preferred embodiment of the present utility model, the first runner and the second runner are of the same size, each runner only includes two blades, and the rotation speeds of the first runner and the second runner are set to be the same or an integer multiple through a reduction gear set to avoid interference of the runner blades.

[0017] In another preferred embodiment of the present utility model, the rotation speed of the second runner is not lower than that of the first runner to prevent blockage of the coffee powder in the horizontal section cavity.

[0018] The semi-automatic coffee machine provided by the present utility model solves a number of problems in the prior art through innovative structural design and has the following technical effects:

[0019] Smooth coffee powder transfer: By arranging the vertical section cavity and the horizontal section cavity of the L-shaped housing, and the optimized design of the first runner and the second runner, the coffee powder can be smoothly transferred from the grinding mechanism to the powder pressing and brewing mechanism, avoiding blockage of the coffee powder during the transfer process.

[0020] Uniform powder pressing: In the powder pressing and brewing mechanism, the main screw cooperates with the threaded sleeve part. The up and down movement of the powder pressing head is realized by the drive of the motor, and the uniformity of the coffee powder during the pressing process is ensured through the cooperation of the spring pressing plate and multiple springs, improving the taste of the coffee.

[0021] Intelligent control: The upper microswitch, lower microswitch and side microswitch set on the powder pressing and brewing mechanism can intelligently control the movement of the powder pressing head by detecting the amount of coffee powder in the coffee handle, avoiding empty pressing, protecting the equipment and extending its service life.

[0022] Easy to operate: The design of the present utility model simplifies the operation steps of the semi-automatic coffee machine. Users only need to perform simple operations to complete the coffee making process, improving the user experience.

[0023] Reasonable structure: By optimizing the layout and connection mode of each component, the overall structure of the coffee machine is more compact and reasonable, occupying less space and being suitable for home and small office use.

[0024] Efficient and practical: The present utility model not only has some functions of a fully automatic coffee machine, but also retains the price advantage and operation fun of a semi-automatic coffee machine, achieving an efficient and practical effect.

[0025] In summary, the semi-automatic coffee machine of the present utility model, through its ingenious structural design and intelligent control, significantly improves the efficiency and quality of coffee making, solves multiple problems in the prior art, and has broad application prospects and market value. The following will further illustrate the concept, specific structure and technical effects generated by the present utility model in conjunction with the drawings to fully understand the purpose, features and effects of the present utility model. Description of the Drawings

[0026] Figure 1 : Schematic structural diagram of a preferred embodiment of the present utility model, showing the overall structure of the semi-automatic coffee machine and the layout of its main components.

[0027] Figure 2 : Schematic structural diagram of the coffee powder transfer device, detailing the arrangement of the L-shaped housing, vertical section cavity, horizontal section cavity and its internal components.

[0028] Figure 3 : Partial enlarged view of the coffee powder transfer device, further showing the specific structures of the first runner, second runner and powder outlet.

[0029] Figure 4 : Schematic structural diagram of the powder pressing and brewing mechanism, showing the specific structures of the main screw, gear disc, threaded sleeve part and powder pressing head.

[0030] Figure 5: A partial enlarged view of the powder pressing and brewing mechanism, which details the arrangement of the screw part, spring pressing plate, multiple springs and micro switches.

[0031] Figure 6 : A schematic top view of the powder pressing and brewing mechanism, showing the specific positions and working principles of the upper micro switch and the lower micro switch.

[0032] Figure 7 : A schematic side view of the powder pressing and brewing mechanism, showing the specific position of the side micro switch and its detection function. Detailed implementation manners

[0033] The following introduces multiple preferred embodiments of the present invention with reference to the accompanying drawings of the specification to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0034] In the drawings, components with the same structure are denoted by the same numerical labels, and components with similar structures or functions everywhere are denoted by similar numerical labels. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. To make the illustration clearer, the thickness of some parts in the drawings is appropriately exaggerated.

[0035] As Figure 1 shown, the semi-automatic coffee machine according to the present invention includes a bean grinding mechanism 100, and coffee beans enter the bean grinding mechanism 100 through a feed funnel 101 and are ground into coffee powder. The ground coffee powder enters the powder pressing and brewing mechanism 200 through a coffee powder transfer device 300.

[0036] As shown in FIG. 2-3, the coffee powder transfer device 300 includes an L-shaped housing 301. Inside the L-shaped housing 301, there is a vertical section cavity 312 and a horizontal section cavity. At the top of the vertical section cavity 312, there is a powder inlet 311 for coffee powder that communicates with the grinding mechanism 100. The coffee powder ground by the grinding mechanism 100 enters the vertical section cavity 312 of the L-shaped housing 301 through the inlet 311 and then falls into the horizontal section cavity via the vertical section cavity 312. The horizontal section cavity includes two connected first circular cavities 313 and second circular cavities 314. A first runner 302 is provided in the first circular cavity 313, and a second runner 303 is provided in the second circular cavity 314. The first runner 302 and the second runner 303 are driven to rotate by a motor 320. In this embodiment, the first runner 302 and the second runner 303 are of the same size, and each runner only includes two blades. The rotation speeds of the first runner 302 and the second runner 303 are set to be the same or an integer multiple by a reduction gear set 304, so that the blades of the two runners do not interfere with each other during rotation. The coffee powder that falls into the horizontal section cavity through the vertical section cavity 312 is transported by the rotation of the first runner 302, enters the second circular cavity 314 through the first circular cavity 313, and then is transported by the rotation of the second runner 303 and is delivered to the powder pressing and brewing mechanism 200 through the powder outlet 315. In order to prevent the coffee powder from accumulating in the horizontal section cavity, on the premise that the first runner 2 and the second runner 3 are of the same size, the rotation speed of the second runner 3 should not be lower than that of the first runner 2.

[0037] As Figures 4 - 7As shown in the figure, a main screw 201 is fixedly arranged at the top of the powder pressing and brewing mechanism 200. A toothed disc 202 is arranged on the main screw 201. The toothed disc 202 is engaged with a worm 203. When the worm 203 rotates driven by an external motor, the screw part 204 of the main screw 201 is driven to rotate through the toothed disc 202. A threaded sleeve part 205 connected to the powder pressing head 206 is fitted outside the screw part 204. When the screw part 204 rotates, the threaded sleeve part 205 and the powder pressing head 206 are driven to move up and down along the screw part 204 through screw fit. An upper microswitch 209 is arranged on the threaded sleeve part 205. When the threaded sleeve part 205 moves up along the screw part 204 to the highest position, the upper microswitch 209 thereon is triggered, the motor stops rotating, and the powder pressing head 206 stops moving. At this time, the powder outlet 315 of the coffee powder conveying device 300 leading to the coffee handle 201 is opened, and the coffee powder can be conveyed and loaded into the coffee handle 201. A spring pressing plate 207 connected to the threaded sleeve part 205 is further arranged inside the powder pressing head 206. A plurality of springs 208 are arranged between the spring pressing plate 207 and the powder pressing head 206. A lower microswitch 210 is arranged on the spring pressing plate 207. When compacting the coffee powder, the threaded sleeve part 205 and the powder pressing head 206 move down along the screw part 204 until they contact the coffee powder, and at the same time, the powder pressing head 206 closes the powder outlet 315 of the coffee powder conveying device 300 leading to the coffee handle 201. At this time, the spring pressing plate 207 in the powder pressing head 206 continues to compress the spring 208 and move down until the lower microswitch 210 thereon is triggered, indicating that the spring 208 reaches the maximum compression force value at this time, the coffee powder in the coffee handle 201 has been compacted, and the motor stops rotating at this time. On the powder pressing and brewing mechanism 200, a side microswitch 211 is arranged on the side of the powder pressing head 206. When there is no coffee powder or little coffee powder in the coffee handle 201, the spring 208 will not be compressed, the lower microswitch 210 will not continue to move down and be triggered, then the powder pressing head 206 itself will continue to penetrate into the coffee handle 201, and at this time, the side microswitch 211 on the side is triggered by the powder pressing head 206, and the motor stops, thus playing a role of empty pressing protection.

[0038] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A semi-automatic coffee machine, characterized in that: include: A bean grinding mechanism, used for grinding coffee beans into coffee powder; The coffee powder delivery device comprises: An L-shaped shell, wherein the L-shaped shell includes a vertical section cavity and a horizontal section cavity; The first rotating wheel and the second rotating wheel are respectively arranged in the first circular cavity and the second circular cavity of the horizontal section cavity and driven to rotate by the motor; they are used to transfer the ground coffee powder from the vertical section cavity to the horizontal section cavity, and then transported to the pressed powder brewing mechanism by the first rotating wheel and the second rotating wheel; Pressed powder brewing mechanism, including: The main screw is provided with a toothed disc, which drives the worm to rotate through the motor, and the worm drives the toothed disc to drive the main screw to rotate; The threaded sleeve part and the powder pressing head cooperate with the main screw; they move up and down when the main screw rotates; the upper micro switch and the lower micro switch arranged on the threaded sleeve part are used to control the movement of the powder pressing head.

2. The semi-automatic coffee machine according to claim 1, wherein: An upper micro switch is provided on the threaded sleeve portion; when the threaded sleeve portion moves upward along the screw portion to the highest position, the upper micro switch thereon is triggered, the motor stops rotating, and the powder pressing head stops moving; at this time, the powder outlet of the coffee powder transfer device leading to the coffee handle is opened, and the coffee powder can be transported into the coffee handle.

3. The semi-automatic coffee machine according to claim 2, wherein: A spring pressure plate connected to the threaded sleeve portion is also arranged inside the powder pressing head; a plurality of springs are arranged between the spring pressure plate and the powder pressing head; a lower micro switch is arranged on the spring pressure plate; when the coffee powder is compressed, the threaded sleeve portion and the powder pressing head move downward along the screw portion until they contact the coffee powder, and at the same time the powder pressing head closes the powder outlet of the coffee powder transfer device to the coffee handle; at this time, the spring pressure plate in the powder pressing head continues to compress the spring to move downward until the lower micro switch thereon is triggered and the motor stops rotating.

4. The semi-automatic coffee machine according to claim 3, wherein: On the tamping head of the tamping mechanism, a side microswitch is arranged on the side of the tamping head; when there is no coffee powder in the coffee handle, or there is little coffee powder, the spring will not be compressed, and the spring pressure plate and the lower microswitch will not continue to move downward in the tamping head and be triggered, but the tamping head itself will continue to descend, so that the side microswitch is triggered by the tamping head and the motor stops rotating.

5. The semi-automatic coffee machine as claimed in claim 1, wherein the first rotor and the second rotor are of the same size, each rotor comprises only two blades, and the rotational speeds of the first rotor and the second rotor are set to be the same or an integer multiple through a reduction gear set to avoid interference between the rotor blades.

6. The semi-automatic coffee machine according to claim 5, wherein: The rotation speed of the second rotating wheel is not lower than that of the first rotating wheel, so as to prevent coffee powder from being blocked in the horizontal section cavity.

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