A semi-automatic coffee machine
Patent Information
- Application Number
- CN202521707872.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-12
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-08-12
AI Technical Summary
传统的半自动高压咖啡机在煮咖啡过程中，存在诸多操作繁琐的问题：
[0016]采用上述方案后，本实用新型通过使得出粉嘴置于咖啡盒组件的上方，可以使得磨豆机构研磨出的咖啡粉直接导入到咖啡盒组件中。通过使得压粉机构置于咖啡盒组件的上方，且其压粉件可伸入咖啡盒组件的杯口，起到压粉的作用。压粉机构的加压通道和萃取通道通过三通连接泵水件，且第一单向阀的开启压力小于第二单向阀的开启压力，在咖啡粉导入咖啡盒组件后并启动泵水件，第一单向阀先导通，向密闭腔注水，从而推动压粉件下压堵住咖啡盒组件的杯口，密闭腔达到极限后，三通内部水压继续增大，从而使得第二单向阀导通，水流经加热机构加热后导入咖啡盒组件中，进行咖啡萃取。咖啡萃取完成后，泵水件停机同时打开排水阀，在弹性件的反作用力下，压粉件回缩，密闭腔内的水流回水箱，咖啡盒组件可以取出。本实用新型在整个过程中无需移动咖啡杯组件，操作简单方便，而且控制点位少，结构简单。
Smart Images
Figure CN224655076U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of beverage making equipment technology, specifically to a semi-automatic coffee machine. Background Technology
[0002] In the current semi-automatic coffee machine market, consumers have increasingly higher demands for the convenience and efficiency of coffee making. Traditional semi-automatic pressure coffee machines suffer from numerous cumbersome operational issues during the coffee brewing process. Firstly, regarding the grinding process, the grinding chamber design of most traditional semi-automatic coffee machines is not well-designed. Cleaning often requires specialized tools to disassemble the grinding chamber, which not only increases operating costs for ordinary users but also risks damaging the equipment due to improper handling during cleaning. Furthermore, the connection between the grinding motor and the grinding chamber is relatively complex, increasing technical difficulty and time costs during routine maintenance and repairs.
[0003] Secondly, the coffee powder processing method also has shortcomings. Transferring the ground coffee powder to the coffee cartridge assembly usually requires manual operation by the user. This not only easily leads to spillage, causing waste and cleaning problems, but also makes it difficult to ensure the even distribution of coffee powder during the transfer process, thus affecting the coffee extraction effect.
[0004] Furthermore, the coffee extraction process also needs improvement. In traditional semi-automatic coffee machines, the way the coffee cartridge is fixed during extraction is relatively simple. Users often need to manually adjust the position of the coffee cartridge at different stages. For example, after grinding the beans, the coffee cartridge needs to be moved to the appropriate position for tamping and extraction. This series of operations not only increases the number of steps for users, but also makes it easy to make mistakes, resulting in failed coffee preparation. Utility Model Content
[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide a semi-automatic coffee machine that is simple and convenient to operate.
[0006] To achieve the above objectives, this utility model discloses a semi-automatic coffee machine, which includes a frame, a grinding mechanism, a tamping mechanism, a heating mechanism, a water supply mechanism, and a coffee box assembly. The grinding mechanism has a powder dispensing nozzle. The coffee box assembly is detachably connected to the frame and is positioned below the powder dispensing nozzle. The tamping mechanism is located above the coffee box assembly. The tamping mechanism includes a fixing member, an elastic member, and a tamping component. The fixing member is connected to the frame, and the tamping component is slidably connected to the fixing member. The sliding direction of the tamping component is towards the coffee box assembly, and the tamping component can extend into the cup opening of the coffee box assembly. One end of the elastic member is connected to the tamping component, and the other end is connected to the frame. A retractable sealed cavity is formed between the fixing member and the tamping component. The fixing member has a pressurization channel communicating with the sealed cavity. The tamping component has an extraction channel communicating with the coffee box assembly. The water supply mechanism includes a water tank, a pump, and a tee. The pump connects the water tank and the first inlet and outlet of the tee. The second inlet and outlet of the tee are equipped with a first check valve, and the third inlet and outlet of the tee are equipped with a second check valve. The opening pressure of the first check valve is less than the opening pressure of the second check valve. The second inlet and outlet of the tee connect to a pressurization channel, and the third inlet of the tee connects to an extraction channel via a heating mechanism. The pressurization channel also connects to the water tank via a pipe, and a drain valve is provided on the pipe.
[0007] The grinding mechanism further includes a bean hopper assembly, a grinding disc assembly, and a grinding motor assembly, with the grinding motor assembly connected to the frame. The grinding disc assembly includes a grinding disc body and a housing, with the grinding disc body housed within the housing. The housing is inserted into the frame, and the frame restricts the rotation of the housing. The frame is equipped with a spring pin, and the housing has a pin hole that engages with the spring pin. The grinding motor assembly is detachably connected to the grinding disc body. The bean hopper assembly is located above the grinding disc assembly and is detachably connected to the housing or the frame. The powder outlet is detachably connected to the frame, and the grinding disc assembly has a powder outlet communicating with the powder outlet. With this configuration, the bean hopper assembly and grinding disc assembly can be disassembled simply by pulling the spring pin, requiring no tools, making operation simple and convenient, and also facilitating cleaning and maintenance.
[0008] The grinding mechanism also includes a cover plate and a cover plate drive assembly. The cover plate is rotatably connected to the nozzle and blocks the nozzle. The cover plate drive assembly drives the cover plate to open the nozzle. When the tamping element moves downward, it pushes the cover plate to block the nozzle. By setting up the cover plate and the cover plate drive assembly, under normal conditions, the cover plate blocks the nozzle. When coffee grounds need to be dispensed, the cover plate drive assembly is activated, which avoids coffee grounds waste. When the tamping element moves downward, it pushes the cover plate to block the nozzle, allowing the cover plate to reliably reset, thus ensuring the nozzle is blocked and preventing coffee grounds waste.
[0009] The cover plate driving assembly includes a linear motion module and a pusher block. The linear motion module drives the pusher block to move, and the pusher block pushes the cover plate to open the powder outlet nozzle. This configuration of the cover plate driving assembly is simple in structure and does not easily interfere with the disassembly of the powder outlet nozzle.
[0010] A coffee carton support is detachably connected to the frame. The upper end of the coffee carton support has a clearance groove to allow the coffee powder nozzle to exit, and the lower end of the coffee carton support has a limiting slot. The coffee carton assembly has a limiting protrusion that matches the limiting slot, and the limiting protrusion is inserted into the limiting slot. This design facilitates the loading and unloading of the coffee carton assembly on the frame, making operation convenient and simple.
[0011] The limiting slot is equipped with an elastic stop, and the limiting protrusion ring is equipped with a limiting block or limiting groove that cooperates with the elastic stop. Under the action of external force, the limiting block or limiting groove can compress and deform the elastic stop, allowing it to pass through. By setting the elastic stop, the coffee box assembly can be prevented from accidentally falling out, and the process of compressing and deforming the elastic stop can provide tactile feedback to the operator, thereby ensuring that the coffee box assembly is assembled in place.
[0012] The coffee box assembly includes a handle. The handle facilitates movement of the coffee box assembly.
[0013] The water supply mechanism also includes a flow meter, which is installed at the inlet or outlet of the pump, or at the third inlet / outlet of the tee. Installing a flow meter ensures the accuracy of the water volume added during coffee extraction.
[0014] The tamping component is sleeved on the outside of the fixing component; the frame is provided with a mounting cylinder for mounting the tamping mechanism, the tamping mechanism is placed in the mounting cylinder, and the inner wall of the mounting cylinder is provided with guide ribs for guiding the tamping component. This arrangement helps to ensure that the tamping component reliably seals the mouth of the coffee box assembly, avoiding the problem of coffee powder flying during coffee extraction.
[0015] It also includes a controller and control buttons, the controller connecting the control buttons, heating mechanism, grinder drive assembly, drain valve, and water pump. The control buttons provide a start signal, and the controller coordinates the operation of each electrical component, thus simplifying the coffee brewing process.
[0016] By adopting the above solution, this utility model allows the coffee powder ground by the grinding mechanism to be directly introduced into the coffee box assembly by placing the powder outlet above it. The tamping mechanism is positioned above the coffee box assembly, and its tamping element extends into the cup opening of the coffee box assembly to tamp the coffee powder. The pressurization channel and extraction channel of the tamping mechanism are connected to the water pump via a T-junction. The opening pressure of the first one-way valve is less than that of the second one-way valve. After the coffee powder is introduced into the coffee box assembly and the water pump is activated, the first one-way valve opens first, injecting water into the sealed chamber. This pushes the tamping element down to block the cup opening of the coffee box assembly. After the sealed chamber reaches its limit, the water pressure inside the T-junction continues to increase, causing the second one-way valve to open. The water flows through the heating mechanism, is heated, and then introduced into the coffee box assembly for coffee extraction. After coffee extraction is complete, the water pump stops and the drain valve opens. Under the reaction force of the elastic element, the tamping element retracts, the water in the sealed chamber flows back to the water tank, and the coffee box assembly can be removed. This invention eliminates the need to move the coffee cup assembly throughout the entire process, making it simple and convenient to operate, with fewer control points and a simple structure. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the present invention; Figure 2 This is a schematic diagram from another perspective of the present invention; Figure 3 This is an exploded view of the present invention; Figure 4 This is a cross-sectional view of the present invention (when the powder pressing component has not moved down); Figure 5 This is a cross-sectional view of the present invention (when the powder pressing component moves downward); Figure 6 This is a schematic diagram of a coffee box stand; Figure 7 This is a schematic diagram of the coffee box components; Figure 8 A schematic diagram of a coffee grinder (the grinder motor assembly is hidden). Figure 9 for Figure 4 Enlarged diagram of section A in the middle; Figure 10 This is a partial schematic diagram of the rack; Figure 11 This is a schematic diagram of the powder pressing mechanism (when the powder pressing component has not moved down). Figure 12 This is a schematic diagram of the powder pressing mechanism (when the powder pressing component moves downwards); Figure 13 for Figure 5 Enlarged diagram of section B; Figure 14 This is the flow diagram of this utility model.
[0018] Explanation of key figure labels: Frame 10; Coffee box bracket 11; Limiting slot 12; Elastic stop 13; Spring pin 14; Mounting cylinder 16; Guide rib 17; Coffee box component 20; limiting protrusion ring 21; limiting slot 22; handle 23; 31. Grinding motor assembly; 321. Grinding disc body; 322. Housing; 323. Insert bar; 324. Pin hole; 325. Polygonal hole; 326. End; 33. Bean hopper assembly; 331. Lid; 34. Powder outlet; 35. Cover plate; 36. Linear movement module; 37. Push block; Fixing component 41; Powder pressing component 42; Sealed cavity 43; Pressurized channel 44; Extraction channel 45; Pump components 51; tee 52; flow meter 53; drain valve 54; first check valve 55; second check valve 56; water tank 57; Heating mechanism 60. Detailed Implementation
[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.
[0020] like Figure 1-14 As shown, this utility model discloses a semi-automatic coffee machine, which includes a frame 10, a grinding mechanism, a tamping mechanism, a heating mechanism 60, a water supply mechanism, a coffee cassette assembly 20, a controller, and control buttons. The controller can be built based on a microcontroller and its peripheral circuits. At least one control button is provided, and one of them is used to provide a start signal. The control button is connected to the controller.
[0021] A coffee box bracket 11 is detachably connected to the frame 10, and can be connected by screws or clips. The lower end of the coffee box bracket 11 has a limiting slot 12, and the coffee box assembly 20 has a limiting protrusion 21 that matches the limiting slot 12. The limiting protrusion 21 is inserted into the limiting slot 12, making it easy to install and remove the coffee box assembly 20. Additionally, a resilient stop member 13 is provided in the limiting slot 12, which can be obtained by bending steel wire. The limiting protrusion 21 has a limiting block or limiting groove 22 that cooperates with the resilient stop member 13. When the limiting protrusion 21 of the coffee box assembly 20 is inserted into the limiting slot 12, the limiting block or limiting groove 22 can be deformed by pressing the elastic stop member 13 under the action of external force, thereby passing through the elastic stop member 13. Similarly, when removing the coffee box assembly 20, the elastic stop member 13 must also be deformed by pressing it to allow the limiting block or limiting groove 22 to pass through the elastic stop member 13. The elastic stop member 13 can prevent the coffee box assembly 20 from falling accidentally, and the process of deforming the elastic stop member 13 can provide tactile feedback to the operator, thereby ensuring that the coffee box assembly 20 is properly assembled. To facilitate the movement of the coffee box assembly 20, a handle 23 is provided on it. The specific structure of the coffee box assembly 20 is not the focus of this case and will not be described in detail. The coffee box assembly 20 can be a simple one-piece cup or a cup with a press-to-drain function.
[0022] The grinding mechanism includes a bean hopper assembly 33, a grinding disc assembly, a grinding motor assembly 31, a powder outlet 34, a cover plate 35, and a cover plate drive assembly. The grinding motor assembly 31 is mounted on the frame 10 and connected to a controller. The grinding disc assembly includes a grinding disc body 321 and a housing 322. The housing 322 is inserted into the frame 10, and the frame 10 restricts the rotation of the housing 322. This restriction is achieved by providing a strip 323 to the housing 322 and a slot on the frame 10, with the strip 323 engaging with the slot. A spring pin 14 is provided on the frame 10, with the spring pin 14 moving horizontally. The housing 322 has a pin hole 324 that engages with the spring pin 14. During the insertion of the housing 322, the spring pin 14 can be inserted into the pin hole 324, thus stopping the housing 322. The grinding disc body 321 is housed within the outer casing 322, and the grinding motor assembly 31 is detachably connected to the grinding disc body 321 via a transmission connection. Specifically, a polygonal inner hole is provided at the bottom of the grinding disc body 321, and an end 326 adapted to the polygonal inner hole is provided on the output shaft of the grinding motor assembly 31. When installing the grinding disc assembly, the polygonal inner hole is aligned with the end 326 and the two are inserted to complete the connection between the grinding motor assembly 31 and the grinding disc body 321, which is simple and convenient.
[0023] The bean hopper assembly 33 is located above the grinding disc assembly and is used to feed coffee beans into the grinding disc assembly. The bean hopper assembly 33 is detachably connected to the housing 322 or the frame 10, preferably the former. A removable cover 331 can be provided on the bean hopper assembly 33 to facilitate adding coffee beans into the hopper. The nozzle 34 is detachably connected to the frame 10, for example, by snap-fit or plug-in connection, and is further limited by the housing 322. The housing 322 of the grinding disc assembly has a powder outlet that communicates with the nozzle 34. The ground coffee powder enters the nozzle 34 through the powder outlet. When the coffee cassette assembly 20 is installed on the frame 10, the nozzle 34 is located above the coffee cassette assembly 20, so that coffee powder can be fed into the coffee cassette assembly 20. A clearance groove is provided at the upper end of the coffee cassette support 11 to avoid the nozzle 34.
[0024] The cover plate 35 is rotatably connected to the powder outlet 34, and under normal conditions, the cover plate 35 blocks the powder outlet 34. The cover plate drive assembly is used to drive the cover plate 35 to open the powder outlet 34. As a preferred embodiment, the cover plate drive assembly includes a linear motion module 36 and a push block 37. The linear motion module 36 is selected from cylinders or electromagnet switches. The linear motion module 36 is mounted on the frame 10 and drives the push block 37 to move downward. When the push block 37 moves downward, it pushes the cover plate 35 to open the powder outlet 34.
[0025] The tamping mechanism is located above the coffee cartridge assembly 20 and the powder outlet 34. A mounting cylinder 16 for installing the tamping mechanism is provided on the frame 10. The tamping mechanism is placed within the mounting cylinder 16, which has only one opening facing downwards. The tamping mechanism includes a fixing member 41, an elastic member, and a tamping component 42. The fixing member 41 is screwed to the bottom of the mounting cylinder 16. The tamping component 42 is sleeved on the outside of the fixing member 41 and is slidably connected to the fixing member 41. The sliding direction of the tamping component 42 is towards the coffee cartridge assembly 20. The fixing member 41 provides a guiding function for the tamping component 42. To ensure the stability of the tamping component 42's movement direction, guide ribs 17 are provided on the inner wall of the mounting cylinder 16 to guide the tamping component 42. The tamping component 42 can extend into the cup opening of the coffee cartridge assembly 20.
[0026] A retractable sealed cavity 43 is formed between the fixing member 41 and the tamping member 42. The fixing member 41 is provided with a pressurizing channel 44, the lower end of which is connected to the sealed cavity 43. The elastic member is a spring, which is sleeved on the fixing member 41. One end of the elastic member is connected to the tamping member 42, and the other end is connected to the bottom of the mounting cylinder 16. By injecting high-pressure water into the sealed cavity, the elastic force of the elastic member can be overcome, causing the tamping member 42 to move downward. After water is no longer injected into the sealed cavity, the reaction force of the elastic member can drive the tamping member 42 to move upward, causing the sealed cavity to drain. The tamping member 42 is provided with an extraction channel 45 that connects to the coffee box assembly 20. Water can be added to the coffee box assembly 20 through the extraction channel 45 for coffee extraction. The downward movement of the tamping member 42 can reliably seal the mouth of the coffee box assembly 20, preventing the problem of coffee powder flying during extraction. When the powder pressing component 42 moves downward, it can push the cover plate 35 to block the powder outlet 34. Before the powder pressing component 42 moves downward, the electromagnet must be de-energized. When the powder pressing component 42 moves downward, pushing the cover plate 35 can ensure that the cover plate 35 is reliably reset and blocks the powder outlet 34.
[0027] The water supply mechanism includes a water tank 57, a pump 51, a tee 52, and a flow meter 53. The pump 51 is connected to the water tank 57 and the first inlet / outlet of the tee 52 via a pipe. A first check valve 55 is installed at the second inlet / outlet of the tee 52, and a second check valve 56 is installed at the third inlet / outlet of the tee 52. The opening pressure of the first check valve 55 is less than the opening pressure of the second check valve 56. The second inlet / outlet pipe of the tee 52 is connected to the upper port of the pressurization channel 44, the third inlet pipe of the tee 52 is connected to the inlet of the heating mechanism 60, and the outlet pipe of the heating mechanism 60 is connected to the extraction channel 45. Because of the first check valve 55, the pressurization channel 44 is also connected to the water tank 57 via a pipe, so that water in the sealed chamber 43 can be discharged. A drain valve 54 is installed on the pipe connecting the pressurization channel 44 and the water tank 57. The flow meter 53 is installed at the inlet or outlet of the pump 51 or the third inlet / outlet of the tee 52. The water pump component 51, flow meter 53, heating mechanism 60, drain valve 54, and flow meter 53 are all connected to the controller. The heating mechanism 60 can be a heating plate. The water pump component 51, heating mechanism 60, drain valve 54, and tee 52 can be mounted on the frame 10.
[0028] The working principle of this utility model is as follows: Insert the coffee cartridge assembly 20 into the coffee cartridge holder 11. Press the coffee brewing button (control button). The electromagnet is energized, opening the cover 35. The grinding mechanism starts grinding coffee beans, and the ground coffee falls into the coffee cartridge assembly 20. Then, the electromagnet is de-energized. Next, the water pump 51 is energized, pumping room temperature water from the water tank 57 through the flow meter 53 and the second inlet / outlet of the three-way valve 52 into the pressurization channel 44 (at this point, the water pressure is sufficient to open the first one-way valve 55 but insufficient to open the second one-way valve 56). The water pressure in the sealed chamber 43 increases, causing the tamping device 42 to press down into the coffee cartridge assembly 20 to tamp the coffee. As the pressure increases, the second one-way valve 56 opens, connecting the third inlet / outlet of the three-way valve 52 to the heating mechanism 60. Room temperature water enters the heating mechanism 60 for heating, and the heated water then flows into the extraction channel 45 for coffee extraction. When the water volume calculated by the flow meter 53 reaches the set volume, the water pump 51 stops working, and the coffee extraction is complete. The drain valve 54 is normally closed. When the coffee extraction is complete, the drain valve 54 is energized and opened, and the water in the pressurized channel 44 and the sealed chamber 43 flows into the water tank 57. The tamping component 42 resets and releases the coffee box assembly 20, and the entire coffee brewing process ends.
[0029] The key to this invention lies in the fact that by positioning the powder outlet 34 above the coffee container assembly 20, the coffee powder ground by the grinding mechanism can be directly introduced into the coffee container assembly 20. By positioning the tamping mechanism above the coffee container assembly 20, and allowing its tamping element 42 to extend into the opening of the coffee container assembly 20, it functions as a tamping device. The pressurizing channel 44 and extraction channel 45 of the tamping mechanism are connected to the water pump 51 via a three-way valve 52. The opening pressure of the first one-way valve 55 is less than the opening pressure of the second one-way valve 56. After the coffee powder is introduced into the coffee container assembly 20 and the water pump 51 is activated, the first one-way valve 55 opens first, injecting water into the sealed chamber 43, thereby pushing the tamping element 42 down to block the opening of the coffee container assembly 20. After the sealed chamber 43 reaches its limit, the water pressure inside the three-way valve 52 continues to increase, thereby opening the second one-way valve 56. The water flows through the heating mechanism 60 for heating and is then introduced into the coffee container assembly 20 for coffee extraction. After coffee extraction is complete, the water pump 51 stops and the drain valve 54 opens. Under the reaction force of the elastic element, the tamping component 42 retracts, and the water in the sealed cavity 43 flows back to the water tank 57, allowing the coffee cup assembly 20 to be removed. This invention eliminates the need to move the coffee cup assembly throughout the entire process, making operation simple and convenient, with fewer control points and a simple structure.
[0030] The above description is merely an embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.
Claims
1. A semi-automatic coffee machine, characterized in that: The machine includes a frame, a grinding mechanism, a tamping mechanism, a heating mechanism, a water supply mechanism, and a coffee cassette assembly. The grinding mechanism has a coffee dispensing nozzle. The coffee cassette assembly is detachably connected to the frame and is positioned below the coffee dispensing nozzle. The tamping mechanism is located above the coffee box assembly. The tamping mechanism includes a fixing member, an elastic member, and a tamping component. The fixing member is connected to the frame, and the tamping component is slidably connected to the fixing member. The sliding direction of the tamping component is towards the coffee box assembly, and the tamping component can extend into the cup opening of the coffee box assembly. One end of the elastic member is connected to the tamping component, and the other end is connected to the frame. A retractable sealed cavity is formed between the fixing member and the tamping component. The fixing member has a pressurization channel communicating with the sealed cavity. The tamping component has an extraction channel communicating with the coffee box assembly. The water supply mechanism includes a water tank, a pump, and a tee. The pump connects the water tank and the first inlet and outlet of the tee. The second inlet and outlet of the tee are equipped with a first check valve, and the third inlet and outlet of the tee are equipped with a second check valve. The opening pressure of the first check valve is less than the opening pressure of the second check valve. The second inlet and outlet of the tee connect to a pressurization channel, and the third inlet of the tee connects to an extraction channel via a heating mechanism. The pressurization channel also connects to the water tank via a pipe, and a drain valve is provided on the pipe.
2. A semi-automatic coffee machine according to claim 1, characterized in that: The grinding mechanism further includes a bean hopper assembly, a grinding disc assembly, and a grinding motor assembly. The grinding motor assembly is connected to the frame. The grinding disc assembly includes a grinding disc body and a housing, with the grinding disc body housed within the housing. The housing is inserted into the frame, and the frame restricts the rotation of the housing. The frame is provided with a spring pin, and the housing is provided with a pin hole that engages with the spring pin. The grinding motor assembly is detachably connected to the grinding disc body. The bean hopper assembly is located above the grinding disc assembly and is detachably connected to the housing or the frame. The powder outlet is detachably connected to the frame, and the grinding disc assembly has a powder outlet that communicates with the powder outlet.
3. A semi-automatic coffee machine according to claim 1, characterized in that: The grinding mechanism also includes a cover plate and a cover plate driving assembly. The cover plate is rotatably connected to the powder outlet nozzle and the cover plate blocks the powder outlet nozzle. The cover plate driving assembly drives the cover plate to open the powder outlet nozzle. When the powder pressing component moves down, the powder pressing component can push the cover plate to block the powder outlet nozzle.
4. A semi-automatic coffee machine according to claim 3, characterized in that: The cover plate driving assembly includes a linear motion module and a pusher block. The linear motion module drives the pusher block to move, and the pusher block pushes the cover plate to open the powder outlet.
5. A semi-automatic coffee machine according to claim 1, characterized in that: A coffee box bracket is detachably connected to the frame. The upper end of the coffee box bracket is provided with a relief groove to avoid the mouthpiece. The lower end of the coffee box bracket is provided with a limiting slot. The coffee box assembly is provided with a limiting protrusion that matches the limiting slot. The limiting protrusion is inserted into the limiting slot.
6. A semi-automatic coffee machine according to claim 5, characterized in that: The limiting slot is provided with an elastic stop member, and the limiting protrusion ring is provided with a limiting block or limiting slot that cooperates with the elastic stop member. Under the action of external force, the limiting block or limiting slot can squeeze the elastic stop member to deform and pass through the elastic stop member.
7. A semi-automatic coffee machine according to claim 1, characterized in that: The coffee box assembly includes a handle.
8. A semi-automatic coffee machine according to claim 1, characterized in that: The water supply mechanism also includes a flow meter, which is installed at the inlet or outlet of the pump or the third inlet / outlet of the tee.
9. A semi-automatic coffee machine according to claim 1, characterized in that: The powder pressing component is sleeved on the outside of the fixing component; the frame is provided with a mounting cylinder for mounting the powder pressing mechanism, the powder pressing mechanism is placed in the mounting cylinder, and the inner wall of the mounting cylinder is provided with guide ribs for guiding the powder pressing component.
10. A semi-automatic coffee machine according to claim 1, characterized in that: It also includes a controller and control buttons, the controller being connected to the control buttons, heating mechanism, grinding drive assembly, drain valve and water pump.