Coffee machine with extraction device convenient to disassemble

Abstract

The utility model discloses a coffee machine with an extraction device convenient to disassemble, which comprises a rack, a bean grinding system, an extraction transmission system and a water outlet device, the extraction transmission system comprises a transmission module arranged on the rack, a clamping module fixedly connected with the action end of the transmission module, and an extraction seat fixedly arranged on the clamping module, an extraction cavity is formed in the extraction base, a liquid outlet is formed in the extraction cavity, the clamping module comprises a connecting base fixed to the execution end of the transmission module and a clamping base buckled to the connecting base, and a clamping space for restraining the extraction base is defined between the clamping base and the connecting base; and the transmission module switches the position of the extraction seat between the first working position and the second working position. The utility model has the advantages and effects of quick disassembly and assembly and simple structure.

Description

Technical Field

[0001] This utility model relates to the field of coffee machine technology, and in particular to a coffee machine with an easy-to-disassemble extraction device. Background Technology

[0002] As an important category of modern catering equipment, the innovative design of the core functional module of coffee machines—the extraction device—directly affects the efficiency, quality stability, and user experience of coffee preparation. Traditional coffee machine extraction devices typically employ an integrated structural design, with the extraction chamber and frame fixedly connected, and the grinding, transmission, and extraction systems nested within each other. While this structure achieves basic functions, significant drawbacks have emerged during long-term use:

[0003] As the core component that comes into direct contact with coffee grounds, the extraction chamber requires frequent cleaning to prevent odors and bacterial growth caused by residual grounds. However, current technologies often use bolt-fixed or embedded installations for extraction chambers, requiring specialized tools for disassembly. This cumbersome process reduces user willingness to clean and maintain the equipment, and the long-term accumulation of grounds can affect the flavor of the extracted coffee and shorten its lifespan. Therefore, there is an urgent need for an extraction device design that combines quick assembly and disassembly with a simple structure to improve equipment reliability and optimize user experience. Utility Model Content

[0004] The purpose of this invention is to provide a coffee machine with an easy-to-disassemble extraction device, which features quick assembly and disassembly and a simple structure.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a coffee machine with an easily detachable extraction device, comprising a frame fixedly disposed inside the coffee machine; a grinding system fixedly installed on the upper part of the frame; an extraction transmission system comprising a transmission module disposed on the frame, a clamping module fixedly connected to the actuating end of the transmission module, and an extraction seat detachably disposed on the clamping module, the extraction seat having an extraction chamber and an outlet, the clamping module comprising a connecting seat fixedly disposed on the actuating end of the transmission module and a retaining seat fastened to the connecting seat, the retaining seat and the connecting seat defining a clamping space constraining the extraction seat, the transmission module switching the position of the extraction seat between a first working position and a second working position; a water outlet device comprising a water outlet connected to a water supply path, the water outlet being fixedly disposed on the frame and opposite to the extraction seat; when in the first working position, the extraction chamber is connected to the output end of the grinding system and the water outlet.

[0006] By adopting the above technical solution, the user puts coffee beans into the grinding system exposed on the surface of the coffee machine. The grinding system grinds the coffee beans into coffee powder. The transmission module moves the extraction seat to the first working position, so that the output end of the grinding system is aligned with the extraction chamber in the extraction seat. This ensures that the ground coffee powder falls accurately into the extraction chamber. The water produced by the water outlet device mixes with the coffee powder in the extraction chamber to form coffee liquid. The coffee liquid flows out through the liquid outlet in the extraction chamber. The extraction chamber is connected and disconnected from the connecting seat through a detachable bracket, avoiding the problem of residual powder residue in the extraction device causing odor and bacterial growth, thus ensuring hygiene and safety.

[0007] The present invention is further configured as follows: the water outlet device includes a water tank, which is detachably disposed outside the coffee machine; a water pump, which is fixedly disposed inside the coffee machine and connected to the water tank via a water circuit; a heating device, which is fixedly disposed inside the coffee machine and connected to the water pump via a water circuit; and a water outlet head, one end of which is connected to the heating device, and the other end forming a water outlet face, which is coaxial with the extraction chamber and docks with the extraction seat in the first working position to form a water inlet channel.

[0008] By adopting the above technical solution, the water in the water tank flows to the heating device through the water pump for heating. The heated water flows out through the water outlet into the extraction chamber and blends with the coffee powder in the extraction chamber for extraction. The end of the water outlet is equipped with an annular sealing ring. When the extraction seat is in the first working position, the annular sealing ring abuts against the extraction chamber to seal it, so that the extraction chamber forms a sealed space to ensure that no water leakage occurs.

[0009] A further feature of this invention is that it includes a housing covering the outside of the coffee machine, a powder-passing space is provided on one side of the frame, the extraction seat and the water outlet device are disposed in the powder-passing space, a powder and residue box is also provided at the bottom of the powder-passing space, the frame includes a support plate, the support plate is located on the other side of the powder-passing space, the grinding system is disposed on the support plate, the water-passing space is defined between the support plate and the water tank, the water pump and the heating device are arranged in the water-passing space, and the water tank is embedded in the outer wall of the housing and forms the surface of the housing.

[0010] By adopting the above technical solution, the layout space of the coffee grounds, water flow, and grinding system is defined by the support plate. The coffee grounds box is located below the extraction seat and water outlet device, so that the coffee grounds produced after extraction fall from the extraction chamber into the coffee grounds box under the action of gravity. The coffee grounds box, extraction seat, and water outlet device are set in the coffee grounds box for extracting coffee liquid and discharging coffee grounds. The water pump and heating device are set in the water flow space for pumping water and heating. The layout of different functions is divided into zones to facilitate mass production and later maintenance.

[0011] A further feature of this invention is that a movable panel is fastened to one side of the housing, and the movable panel is positioned facing the powder-passing space.

[0012] By adopting the above technical solution, an opening is provided on the housing corresponding to the position of the movable panel. The first working position and the second working position are both located at the position corresponding to the opening. The user can remove the movable panel on the housing and disassemble and connect the extraction device through the opening, achieving the effect of quick disassembly and assembly. In addition, the coffee grounds production can be observed at any time through the opening, and cleaning can be carried out as needed.

[0013] A further feature of this invention is that the card holder includes an upper pressure plate and a lower pressure plate slidably disposed on both sides of the extraction seat, a return spring is provided between the upper pressure plate and the lower pressure plate, the connecting seat is provided with a card groove facing the upper pressure plate and the lower pressure plate, and both the upper pressure plate and the lower pressure plate are provided with elastic buckles that are embedded in the card groove.

[0014] By adopting the above technical solution, the movement direction of the upper and lower pressure plates, the opening direction of the slot, and the actuation direction of the return spring are the same. When it is necessary to disassemble the extraction seat from the connecting seat, the user presses the upper and lower pressure plates on both sides of the slot connected to the extraction seat, compressing the return spring between the upper and lower pressure plates, causing the elastic buckle to move down and leave the slot on the connecting seat, thus completing the disassembly of the extraction seat from the connecting seat. When it is necessary to connect the extraction seat to the connecting seat, the user presses the upper and lower pressure plates on both sides of the slot connected to the extraction seat, compressing the return spring between the upper and lower pressure plates, causing the elastic buckle to move down and close to the connecting seat. After releasing the upper and lower pressure plates, the elastic buckles at the lower ends of the upper and lower pressure plates engage with the slot on the connecting seat under the elastic force of the return spring, thus completing the installation of the extraction seat from the connecting seat. The simple structure allows for the disassembly and assembly of the extraction device, which is convenient for cleaning, increases the user's willingness to clean and maintain, optimizes the user experience, and extends the equipment's lifespan.

[0015] A further feature of this invention is that the transmission module further includes a piston push rod, which passes through the extraction chamber and is fixed on the frame. In the first working position, the extraction seat is connected between the water outlet device and the piston push rod, and the piston head of the piston push rod divides the extraction chamber into a first chamber and a second chamber. The first chamber is connected to the grinding system and is in contact with the water outlet end face of the water outlet device. The second chamber is connected to the liquid outlet. The piston head is provided with a fluid channel connecting the first chamber and the second chamber. A slag discharge path is formed from the first working position to the second working position. The piston head slides relative to the first chamber in the slag discharge path until the piston head extends out or is flush with the water inlet side of the first chamber. When in the second working position, the piston push rod moves relative to the extraction chamber, and the piston head pushes the coffee grounds in the first chamber to fall out.

[0016] By adopting the above technical solution, during the process of the transmission module driving the extraction seat to the first working position, the piston pusher located in the extraction chamber, being fixed on the frame, gradually divides the extraction chamber into a first chamber located at the front end of the piston pusher and a second chamber located at the rear end of the piston pusher. When the extraction seat moves to the first working position and comes into contact with the water outlet device, the opening end of the first chamber is connected to the discharge end of the grinding system. The water from the water outlet device mixes with the coffee powder in the first chamber for extraction, and the resulting coffee liquid flows out through the liquid outlet connected to the second chamber. After the coffee liquid has flowed out, during the process of the transmission module driving the extraction seat to the second working position, the piston pusher fixed on the frame moves relative to the extraction chamber, causing the coffee grounds in the first chamber to be gradually pushed out of the extraction chamber by the piston pusher. The coffee grounds fall to the bottom of the extraction chamber by gravity. The moving extraction device can complete multiple functions of coffee liquid extraction and grounds discharge, with a simple, flexible and intelligent structure.

[0017] A further feature of this invention is that the transmission module further includes a gear transmission module, a drive motor, and a lead screw transmission mechanism. The lead screw transmission mechanism includes a transmission nut fixedly connected to the connecting seat and a ball screw cooperating with the transmission nut. The drive motor is connected to the gear transmission module and drives the gear transmission module to move. The gear transmission module drives the extraction seat to move.

[0018] By adopting the above technical solution, the drive motor drives the gear transmission module to rotate, which in turn drives the ball screw fixedly connected to the gear transmission module to rotate. The ball screw passes through the transmission nut and is threadedly connected to the transmission nut. When the ball screw rotates, it drives the transmission nut to move forward. The transmission nut is fixedly connected to the connecting seat, and the extraction seat is mounted on the connecting seat through a retainer. Thus, the extraction seat can move forward to the ball screw until the first working position, successfully completing the docking of coffee powder. The drive motor drives the gear transmission module to rotate in the opposite direction, which drives the ball screw fixedly connected to the gear transmission module to rotate in the opposite direction, which drives the transmission nut to move backward. This causes the extraction seat to move backward, completing the work of the piston pusher in the extraction chamber pushing the coffee grounds to fall off. The transmission structure is simple and easy to implement.

[0019] A further feature of this invention is that: a piston head is provided at the end of the piston push rod, a one-way valve is provided inside the piston head, and a plurality of liquid inlet holes are provided on the end face of the piston head; the one-way valve and the liquid inlet holes form a fluid channel for coffee liquid to enter the second chamber, and the fluid channel is connected to the extraction chamber.

[0020] By adopting the above technical solution, after the coffee powder is extracted into coffee liquid by the water outlet device in the first chamber, the coffee liquid flows into the second chamber through the inlet hole set on the piston head end face, which pushes the one-way valve to open. Then it flows out through the outlet connected to the second chamber. Due to the setting of the one-way valve, the coffee liquid flowing into the second chamber will not flow back into the first chamber, thus ensuring a good liquid output effect.

[0021] A further feature of this invention is that the coffee powder container is at least partially exposed on the surface of the coffee machine, and the coffee powder container is configured to be pull-out and movable.

[0022] By adopting the above technical solution, users can pull out the coffee grounds box from the outer surface of the coffee machine, making it easy to clean the coffee grounds inside.

[0023] A further feature of this invention is that the coffee machine also includes a water receiving box, one end of which extends into the coffee machine to form a base, and the coffee powder box is placed on the base.

[0024] By adopting the above technical solution, a baffle is provided on the chassis. The space between the baffle and the shell located at one end of the water receiving box defines the insertion space for the coffee grounds box. Pulling out the water receiving box causes the coffee grounds box to be pulled out together with the baffle. Through the linkage extraction structure, users can handle wastewater and coffee grounds at the same time without having to perform two separate operations, which significantly improves cleaning efficiency and reduces the possibility of forgetting to clean up the coffee grounds.

[0025] In summary, this utility model has the following beneficial effects:

[0026] 1. The coffee machine is fixedly mounted inside a frame, with the grinding system fixedly installed on the upper part of the frame. The extraction transmission system includes a transmission module mounted on the frame, a clamping module fixedly connected to the actuating end of the transmission module, and an extraction seat fixedly mounted on the clamping module. The extraction seat has an extraction chamber with a liquid outlet. The clamping module includes a connecting seat fixed to the actuating end of the transmission module and a locking seat that snaps onto the connecting seat. The locking seat and the connecting seat define a clamping space that constrains the extraction seat. The transmission module switches the extraction seat between a first working position and a second working position. The water outlet is fixedly mounted inside the coffee machine. The hot water produced by the water outlet is mixed with coffee grounds through the water outlet head to form coffee liquid. When in the first working position, the extraction chamber is connected to the output end of the grinding system and the water outlet, which avoids residual coffee grounds in the extraction device, thus preventing odors and bacterial growth and ensuring hygiene and safety. 2. A movable panel is fastened to one side of the housing, facing the coffee grounds passage space. An opening is provided on the housing corresponding to the movable panel. The first working position and the second working position are both located at the opening. The user can remove the movable panel on the housing and disassemble and connect the extraction device through the opening, achieving a quick disassembly and assembly effect. In addition, the coffee grounds production can be observed at any time through the opening, and cleaning can be performed as needed. Attached Figure Description

[0027] Figure 1 This is a perspective view of the present invention.

[0028] Figure 2 This is a schematic diagram of the structure of this utility model after omitting the shell. Figure 1 .

[0029] Figure 3 This is a schematic diagram of the structure of this utility model after omitting the shell. Figure 2 .

[0030] Figure 4 This is a utility model Figure 3 A magnified view of B in the middle.

[0031] Figure 5 This is a schematic diagram of part of the structure of the grinding system of this utility model.

[0032] Figure 6 This is a front sectional view of the present invention in its working state.

[0033] Figure 7 This is a schematic diagram of the back of the extraction seat of this utility model in the first working position. Figure 1 .

[0034] Figure 8 This is a schematic diagram of the back of the extraction seat of this utility model in the first working position. Figure 2 .

[0035] Figure 9 This is an exploded view of the detachable connection mechanism of this utility model.

[0036] Figure 10 This is a schematic diagram of the heating device of this utility model after the shell has been removed.

[0037] Figure 11 This is an exploded view of the piston push rod of this utility model.

[0038] Figure 12 This is a cross-sectional view of the piston push rod of this utility model.

[0039] Figure 13 This is a schematic diagram of the internal structure of this utility model with the shell portion omitted.

[0040] Figure 14 This is a cross-sectional view of the present invention.

[0041] Figure 15 This is a schematic diagram of the present invention after omitting the movable panel.

[0042] Figure 16 This is a cross-sectional view of the card holder and connecting seat of this utility model when they are connected.

[0043] In the diagram: 1. Frame; 11. Filtering space; 12. Watering space; 13. Support plate; 2. Grinding system; 21. Bean hopper; 22. Conical grinding disc assembly; 221. Moving grinding disc; 222. Stationary grinding disc; 2221. Stationary grinding disc end face; 223. Grinding chamber; 224. Pull ring; 225. Grinding base; 226. Gear motor; 227. Limiting block; 228. Limiting groove; 3. Extraction transmission system; 311. Piston push rod; 3111. Piston head; 31111. One-way valve; 31112. Liquid inlet; 31113. Piston head end face; 312. Gear transmission module; 313. Drive motor; 314. Screw transmission mechanism; 3141. Transmission nut; 3142. Ball screw; 321 3211 Connecting seat; 3212 Slot; 3212 Snap-in part; 322 Socket; 3220 Elastic buckle; 3221 Upper pressure plate; 3222 Lower pressure plate; 3223 Return spring; 3224 Elastic protrusion; 3225 Groove; 3226 Guide surface; 33 Extraction seat; 331 Extraction chamber; 3311 First chamber; 3312 Second chamber; 3313 Liquid outlet; 4. Water outlet device; 41 Water tank; 42 Water pump; 43. Heating device; 431 Annular heating tube; 44. Water outlet head; 441 Annular sealing ring; 442 Water outlet end face; 5. Housing; 51. Movable panel; 6. Powder and slag box; 7. Water receiving box; 71. Chassis; 72. Baffle; 8. Opening. Detailed Implementation

[0044] The present invention will be further described below with reference to the accompanying drawings.

[0045] A coffee machine with an easily detachable extraction device, such as Figure 1-16 As shown, the system includes a frame 1, which is fixedly installed inside the coffee machine; a grinding system 2, which is fixedly installed on the upper part of the frame 1; and an extraction transmission system 3, which includes a transmission module mounted on the frame 1, a clamping module fixedly connected to the actuating end of the transmission module, and an extraction seat 33 fixedly mounted on the clamping module. The extraction seat 33 has an extraction chamber 331 inside, and an outlet 3313 inside the extraction chamber 331. The clamping module includes a connecting rod fixed to the actuating end of the transmission module. The coffee machine includes a connector 321 and a retainer 322 that fastens to the connector 321. The retainer 322 and the connector 321 define a clamping space that constrains the extraction seat 33. The transmission module switches the extraction seat 33 between a first working position and a second working position. A water outlet device 4 is fixedly installed inside the coffee machine and is used to extract coffee powder from the extraction transmission system 3. When in the first working position, the extraction chamber 331 is connected to the output end of the grinding system 2 and the water outlet device 4. The user puts coffee beans into the grinding system 2, which is exposed on the surface of the coffee machine. The grinding system 2 grinds the coffee beans into coffee powder. The transmission module drives the extraction seat 33 to move to the first working position, so that the output end of the grinding system 2 is aligned with the extraction chamber 331 in the extraction seat 33. This ensures that the ground coffee powder falls accurately into the extraction chamber 331. The water produced by the water outlet 4 mixes with the coffee powder in the extraction chamber 331 to form coffee liquid. The coffee liquid flows out through the liquid outlet 3313 in the extraction chamber 331. The extraction chamber 331 is connected and disconnected from the connecting seat 321 through the detachable bracket 322, which avoids the problem of residual powder residue in the extraction device causing odor and bacterial growth, and ensures hygiene and safety.

[0046] Preferably, the water outlet device 4 includes a water tank 41, which is detachably disposed outside the coffee machine; a water pump 42, which is fixedly disposed inside the coffee machine and is connected to the water tank 41 via a water circuit; a heating device 43, which is fixedly disposed inside the coffee machine and is connected to the water pump 42 via a water circuit; and a water outlet head 44, one end of which is connected to the heating device 43 via a water circuit, and the other end forming a water outlet end face 442, which is coaxial with the extraction chamber 331 and docks with the extraction seat 33 in the first working position to form a water inlet channel. Water in water tank 41 flows to heating device 43 via water pump 42 for heating. The heated water flows out through water outlet 44 into extraction chamber 331, where it mixes with coffee powder in extraction chamber 331 for extraction. The end of water outlet 44 is provided with an annular sealing ring 441. When extraction seat 33 is in the first working position, the annular sealing ring 441 abuts against extraction chamber 331 to seal, forming a sealed space in extraction chamber 331 to ensure no water leakage.

[0047] Preferably, the card holder 322 includes an upper pressure plate 3221 and a lower pressure plate 3222 slidably disposed on both sides of the extraction seat 33. A return spring 3223 is provided between the upper pressure plate 3221 and the lower pressure plate 3222. The connecting seat 321 is provided with a slot 3211 facing the upper pressure plate 3221 and the lower pressure plate 3222. Both the upper pressure plate 3221 and the lower pressure plate 3222 are provided with elastic buckles 3220 that can be inserted into the slot 3211. The movement direction of the upper and lower pressure plates, the direction of the opening 8 of the slot 3211, and the actuation direction of the return spring 3223 are the same. When it is necessary to disassemble the extraction seat 33 from the connecting seat 321, the user presses the upper pressure plate 3221 and the lower pressure plate 3222 on both sides of the slot 322 connected to the extraction seat 33, which compresses the return spring 3223 between the upper pressure plate 3221 and the lower pressure plate 3222, causing the elastic buckle 3220 to move down and leave the slot 3211 on the connecting seat 321, thereby completing the disassembly of the extraction seat 33 from the connecting seat 321. When it is necessary to connect the extraction seat 33 to the connecting seat 321, the user presses the clip connected to the extraction seat 33. The upper pressure plate 3221 and lower pressure plate 3222 on the upper and lower sides of the base 322 compress the return spring 3223 between the upper pressure plate 3221 and the lower pressure plate 3222, causing the elastic buckle 3220 to move down and close to the connecting base 321. After that, the upper pressure plate 3221 and the lower pressure plate 3222 are released. Under the elastic force of the return spring 3223, the elastic buckle 3220 at the lower end of the upper pressure plate 3221 and the lower pressure plate 3222 snaps into the slot 3211 on the connecting base 321, thereby completing the installation of the extraction base 33 with the connecting base 321. The extraction device can be disassembled and assembled with a simple structure. It is easy to clean, improves the user's willingness to clean and maintain, optimizes the user experience, and extends the equipment life.

[0048] Preferably, the transmission module further includes a piston push rod 311, which passes through the extraction chamber 331 and is fixed to the frame 1. In the first working position, the extraction seat 33 is connected between the water outlet device 4 and the piston push rod 311, and the piston head 3111 of the piston push rod 311 divides the extraction chamber 331 into a first chamber 3311 and a second chamber 3312. The first chamber 3311 is connected to the grinding system 2 and is connected to the water outlet end face 442 of the water outlet device 4, which faces the extraction chamber. Water produced by the water outlet device 4 flows out from the water outlet end face 442. The second chamber 3312 is connected to the liquid outlet 3313. The piston head 3111 is provided with a connecting... The fluid passage between the first and second chambers; a slag discharge path is formed from the first working position to the second working position. The piston head 3111 slides relative to the first chamber under the slag discharge path until the piston head 3111 extends out or is flush with the water inlet side of the first chamber. When in the second working position, the piston push rod 311 moves relative to the extraction chamber 331. The piston head 3111 pushes the coffee grounds in the first chamber 3311 to fall out. Here, relative movement means that the piston head is fixed and the extraction chamber moves. With the extraction chamber as a reference, the piston head moves relative to the extraction chamber.

[0049] Preferably, the transmission module further includes a gear transmission module 312, a drive motor 313, and a lead screw transmission mechanism 314. The lead screw transmission mechanism 314 includes a transmission nut 3141 fixedly connected to the connecting seat 321 and a ball screw 3142 cooperating with the transmission nut 3141. The drive motor 313 is connected to the gear transmission module 312 and drives the gear transmission module 312 to move. The gear transmission module 312 drives the extraction seat 33 to move. The piston push rod 311 has a piston head 3111 at its end. The piston head 3111 has a one-way valve 31111 inside. The piston head end face 31113 has a plurality of liquid inlet holes 31112. The piston head end face is the side facing the water outlet. The coffee liquid enters the one-way valve 31111 from the liquid inlet holes 31112 on the piston head end face 31113. The one-way valve 31111 and the liquid inlet holes 31112 form a fluid channel for the coffee liquid to enter. The fluid channel is connected to the extraction chamber 331. During the process of the transmission module driving the extraction seat 33 to the first working position, the piston push rod 311 located in the extraction chamber 331, being fixed to the frame 1, gradually divides the extraction chamber 331 into a first chamber 3311 located at the front end of the piston push rod 311 and a second chamber 3312 located at the rear end of the piston push rod 311. When the extraction seat 33 moves to the first working position and comes into contact with the water outlet device 4, the opening 8 end of the first chamber 3311 is connected to the discharge end of the grinding system 2. The water from the water outlet device 4 mixes with the coffee powder in the first chamber 3311 for extraction, forming... The coffee liquid flows out through the outlet 3313 connected to the second chamber 3312. After the coffee liquid has finished flowing out, the transmission module drives the extraction seat 33 to move to the second working position. During this process, the piston push rod 311 fixed on the frame 1 moves relative to the extraction chamber 331, causing the coffee grounds in the first chamber 3311 to be gradually pushed out of the extraction chamber 331 by the piston push rod 311. The coffee grounds fall to the bottom of the extraction chamber 331 by gravity. The moving extraction device can complete the multiple functions of coffee liquid extraction and grounds discharge. It has a simple structure and is flexible and intelligent.

[0050] Preferably, the elastic buckle 3220 includes an elastic protrusion 3224, and a groove 3225 is formed at the connection between the upper and lower pressure plates and the elastic protrusion 3224. A guide surface 3226 is formed near the end face of the groove 3225 adjacent to the elastic protrusion 3224. The snap-in portion 3212 of the connecting seat 321 is placed in the groove 3225 and mutually limits its position with the guide surface 3226, forming a stable stop structure. This design provides reliable locking and convenient disassembly. During operation, the elastic protrusion 3224 can be pressed directly for assembly and disassembly, without necessarily pressing the upper and lower pressure plates.

[0051] Preferably, the machine also includes a housing 5 covering the outside of the coffee machine. A powder passing space 11 is provided on one side of the frame 1. The extraction seat 33 and the water outlet device 4 are disposed in the powder passing space 11. A powder and residue box 6 is also provided at the bottom of the powder passing space 11. The frame 1 includes a support plate 13, which is located on the other side of the powder passing space 11. The grinding system 2 is disposed on the support plate 13. The support plate 13 and the water tank 41 define the water passing space 12. The water pump 42 and the heating device 43 are arranged in the water passing space 12. The water tank 41 is embedded in the outer wall of the housing 5 and forms the surface of the housing 5. The support plate 13 defines the arrangement space of the coffee grounds passage space 11, the water passage space 12, and the grinding system 2. The coffee grounds box 6 is located below the extraction seat 33 and the water outlet device 4, so that the coffee grounds produced after extraction fall from the extraction chamber 331 to the coffee grounds box 6 under the action of gravity. The coffee grounds box 6, the extraction seat 33, and the water outlet device 4 are set in the coffee grounds passage space 11 for extracting coffee liquid and discharging coffee grounds. The water pump 42 and the heating device 43 are set in the water passage space 12 for pumping water and heating. The different functions are divided into different areas for easy mass production and later maintenance.

[0052] Preferably, a movable panel 51 is fastened to one side of the housing 5, and the movable panel 51 is positioned facing the coffee grounds passage space 11. The movable panel 51 is magnetically connected to the housing 5, allowing the movable panel 51 to be fastened onto the housing 5. An opening 8 is provided on the housing 5 corresponding to the position of the movable panel 51. The first working position and the second working position are both located at the positions corresponding to the opening 8. The mating direction of the card holder 322 and the connecting seat 321 is consistent with the direction of the opening 8. The user can remove the movable panel 51 from the housing 5 and disassemble and connect the extraction device through the opening 8, achieving a quick disassembly and assembly effect. In addition, the coffee grounds production can be observed at any time through the opening 8, and cleaning can be performed as needed.

[0053] Preferably, the coffee grounds container 6 is at least partially exposed on the surface of the coffee machine, and the coffee grounds container 6 is configured to be removable. The coffee machine also includes a water collection box 7, which is located at the bottom of the outer wall of the coffee machine. One end of the water collection box 7 extends into the coffee machine to form a base 71. The coffee grounds container 6 is placed on the base 71, and a baffle 72 is provided on the base 71. The baffle 72 and the housing 5 located at one end of the water collection box 7 define a space that constrains the placement of the coffee grounds container 6. Pulling out the water collection box 7 causes the coffee grounds container 6 to be pulled out together with the baffle 72. Through the linkage extraction structure, the user can handle wastewater and coffee grounds simultaneously without having to perform two separate operations, which significantly improves cleaning efficiency and reduces the possibility of forgetting to clean the coffee grounds.

[0054] Preferably, the grinding system 2 includes a bean hopper 21 and a conical grinding disc assembly 22. The bean hopper 21 is exposed on the surface of the coffee machine. The conical grinding disc assembly 22 is disposed below the bean hopper 21 and communicates with it for grinding the coffee beans inside the bean hopper 21. The conical grinding disc assembly 22 includes a moving grinding disc 221 and a stationary grinding disc 222. The moving grinding disc 221 and the stationary grinding disc 222 are coaxially nested and form a grinding chamber 223 below the bean hopper 21. A grinding seat 225, open towards the bean hopper, is located below the bean hopper. Below the grinding base 225 is a geared motor 226 that provides grinding power. The output end of the geared motor 226 extends into the grinding base 225, and the moving grinding disc 221 is fixedly connected to the output end of the geared motor 226. The stationary grinding disc 222 is mounted on the grinding base 225 and located on the outer periphery of the moving grinding disc 221. A pull ring 224 is provided on the end face 2221 of the stationary grinding disc. The stationary grinding disc 222 can be disassembled by pulling the pull ring 224. This structural design effectively solves the technical problem of inconvenient disassembly and assembly during maintenance of existing grinding devices. The assembly and disassembly method of the stationary grinding disc 222 has been further optimized. A limiting block is provided on the inner wall of the grinding base 225, and a limiting groove is provided on the outer edge of the stationary grinding disc 222 to accommodate the limiting block. Rotating the pull ring 224 actuates the stationary grinding disc 222, causing the limiting block on the grinding base 225 to engage / disengage from the limiting groove 228 on the stationary grinding disc 222, thus completing the assembly and disassembly steps of the stationary grinding disc 222. As an example, two limiting blocks 227 are configured and symmetrically arranged on the inner wall of the grinding base 225. Two limiting grooves 228 are configured on the stationary grinding disc 222, each corresponding to one of the two limiting blocks 227. The two limiting blocks 227 engage with the two limiting grooves 228, resulting in better fixation between the stationary grinding disc 222 and the grinding base 225.

[0055] The basic working principle of this utility model is as follows: The user puts coffee beans into the grinding system 2 exposed on the surface of the coffee machine. The grinding system 2 grinds the coffee beans into coffee powder. The drive motor 313 drives the gear transmission module 312 to rotate, which in turn drives the ball screw 3142 fixedly connected to the gear transmission module 312 to rotate. The ball screw 3142 passes through the transmission nut 3141 and is threadedly connected to the transmission nut 3141. When the ball screw 3142 rotates, it will drive the transmission nut 3141 to move forward of the ball screw 3142. The transmission nut 3141 is fixedly connected to the connecting seat 321. The extraction seat 33 is mounted on the connecting seat 321 through the retainer 322, so the extraction seat 33 can move forward of the ball screw 3142. During the process of the moving module driving the extraction seat 33 to the first working position, the piston pusher 311 located in the extraction chamber 331, being fixed to the frame 1, gradually divides the extraction chamber 331 into a first chamber 3311 located at the front end of the piston pusher 311 and a second chamber 3312 located at the rear end of the piston pusher 311. When the extraction seat 33 moves to the first working position and comes into contact with the water outlet device 4, the output end of the grinding system 2 is aligned with the extraction chamber 331 in the extraction seat 33, ensuring that the ground coffee powder falls accurately into the extraction chamber 331. The water in the water tank 41 flows to the heating device 43 through the water pump 42. The heating device 43 has an annular heating tube 431 inside, and the water flows through the annular heating tube 431 for heating. The water flows into the outlet head 44, and the end of the outlet head 44 is provided with an annular sealing ring 441. When the extraction seat 33 is in the first working position, the annular sealing ring 441 abuts against the extraction chamber 331 to seal it, so that the extraction chamber 331 forms a sealed space to ensure that no water leakage occurs. The hot water produced by the water outlet device 4 is mixed with coffee powder in the first chamber 3311 to form coffee liquid. The coffee liquid pushes the one-way valve 31111 to open through the inlet hole 31112 provided on the piston head end face 31113 and flows into the second chamber 3312. Then it flows out through the outlet 3313 connected to the second chamber 3312. After the coffee liquid has flowed out, the drive motor 313 drives the gear transmission module 3. 12 reverses the rotation, causing the ball screw 3142, which is fixedly connected to the gear transmission module 312, to rotate in the opposite direction. This causes the transmission nut 3141 to move behind the ball screw 3142, and the extraction seat 33 to move behind the ball screw 3142. As the transmission module moves the extraction seat 33 to the second working position, the piston push rod 311 fixed on the frame 1 moves relative to the extraction chamber 331. This causes the coffee grounds in the first chamber 3311 to be gradually pushed out of the extraction chamber 331 by the piston push rod 311 until the extraction seat 33 moves to the second working position. The coffee grounds are then completely pushed out of the extraction chamber 331 by the piston push rod 311, and fall into the grounds box 6 below the extraction chamber 331 by gravity.The motion extraction device can perform multiple functions, including coffee extraction and grounds removal, and is simple, flexible, and intelligent in structure.

[0056] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A coffee machine with an easily detachable extraction device, characterized in that, include: A frame (1) is fixedly installed inside the coffee machine; The grinding system (2) is fixedly installed on the upper part of the frame (1); The extraction transmission system (3) includes a transmission module mounted on the frame (1), a clamping module fixedly connected to the actuating end of the transmission module, and an extraction seat (33) detachably mounted on the clamping module. The extraction seat (33) is provided with an extraction chamber (331) and an outlet (3313). The clamping module includes a connecting seat (321) fixed on the actuating end of the transmission module and a retainer (322) fastened to the connecting seat (321). The retainer (322) and the connecting seat (321) define a clamping space that constrains the extraction seat (33). The transmission module switches the extraction seat (33) between a first working position and a second working position. The water outlet device (4) includes a water outlet head (44) connected to a water supply line. The water outlet head (44) is fixedly mounted on the frame (1) and is positioned opposite to the extraction seat (33). When in the first working position, the extraction chamber (331) is connected to the output end of the grinding system (2) and the water outlet (44).

2. The coffee machine with an easily detachable extraction device according to claim 1, characterized in that, The water outlet device (4) also includes: Water tank (41), which is detachably mounted on the exterior of the coffee machine; A water pump (42) is fixedly installed inside the coffee machine and is connected to the water tank (41) via a water circuit. Heating device (43), the heating device (43) is fixedly installed inside the coffee machine and is connected to the water pump (42) water circuit; The water outlet (44) is connected at one end to the heating device (43) and at the other end to form a water outlet end face (442). The water outlet end face (442) is coaxial with the extraction chamber (331) and docks with the extraction seat (33) in the first working position to form a water inlet channel.

3. A coffee machine with an easily detachable extraction device according to claim 2, characterized in that, It also includes a housing (5) covering the outside of the coffee machine. The frame (1) has a powder sifting space (11) on one side. The extraction seat (33) and the water outlet device (4) are located in the powder sifting space (11). A powder residue box (6) is also provided at the bottom of the powder sifting space (11). The frame (1) includes a support plate (13). The support plate (13) is located on the other side of the powder sifting space (11). The grinding system (2) is located on the support plate (13). A water sifting space (12) is defined between the support plate (13) and the water tank (41). The water pump (42) and the heating device (43) are arranged in the water sifting space (12). The water tank (41) is embedded in the outer wall of the housing (5) and forms the surface of the housing (5).

4. A coffee machine with an easily detachable extraction device according to claim 3, characterized in that, A movable panel (51) is fastened to one side of the housing (5), and the movable panel (51) is positioned facing the powder-passing space (11).

5. A coffee machine with an easily detachable extraction device according to claim 1, characterized in that, The card holder (322) includes an upper pressure plate (3221) and a lower pressure plate (3222) slidably disposed on both sides of the extraction seat (33). A return spring (3223) is provided between the upper pressure plate (3221) and the lower pressure plate (3222). The connecting seat (321) is provided with a slot (3211) facing the upper pressure plate (3221) and the lower pressure plate (3222). Both the upper pressure plate (3221) and the lower pressure plate (3222) are provided with elastic buckles (3220) that are embedded in the slot (3211).

6. A coffee machine with an easily detachable extraction device according to claim 1, characterized in that, The transmission module also includes a piston push rod (311), which passes through the extraction chamber (331) and is fixed on the frame (1). In the first working position, the extraction seat (33) is connected between the water outlet device (4) and the piston push rod (311), and the piston head (3111) of the piston push rod (311) divides the extraction chamber (331) into a first chamber (3311) and a second chamber (3312). The first chamber (3311) is connected to the grinding system (2) and is connected to the water outlet end face (442) of the water outlet device (4). The second chamber (3312) is connected to the grinding system (2) and is connected to the water outlet end face (442) of the water outlet device (4). The outlet (3313) is connected, and the piston head (3111) is provided with a fluid channel connecting the first chamber (3311) and the second chamber (3312); a slag discharge path is formed from the first working position to the second working position, and the piston head (3111) slides relative to the first chamber (3311) under the slag discharge path until the piston head (3111) extends out or is flush with the water inlet side of the first chamber (3311). When in the second working position, the piston push rod (311) moves relative to the extraction chamber (331), and the piston head (3111) pushes the coffee grounds in the first chamber (3311) to fall.

7. A coffee machine with an easily detachable extraction device according to claim 1, characterized in that, The transmission module further includes a gear transmission module (312), a drive motor (313), and a lead screw transmission mechanism (314). The lead screw transmission mechanism (314) includes a transmission nut (3141) fixedly connected to the connecting seat (321) and a ball screw (3142) cooperating with the transmission nut (3141). The drive motor (313) is connected to the gear transmission module (312) and drives the gear transmission module (312) to move. The gear transmission module (312) drives the extraction seat (33) to move.

8. A coffee machine with an easily detachable extraction device according to claim 6, characterized in that, The piston push rod (311) is provided with a piston head (3111) at its end. The piston head (3111) is provided with a one-way valve (31111) inside. The piston head (3111) is provided with a plurality of liquid inlet holes (31112) on its end face. The one-way valve (31111) and the liquid inlet holes (31112) form a fluid channel for coffee liquid to enter the second chamber (3312). The fluid channel is connected to the extraction chamber (331).

9. A coffee machine with an easily detachable extraction device according to claim 3, characterized in that, The coffee grounds container (6) is at least partially exposed on the surface of the coffee machine, and the coffee grounds container (6) is configured to be removable by pulling out.

10. A coffee machine with an easily detachable extraction device according to claim 9, characterized in that, The coffee machine also includes a water collection box (7), one end of which extends into the coffee machine to form a base (71), and the powder and residue box (6) is placed on the base (71).

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