CN222032096U - Brewing unit and coffee machine - Google Patents

Abstract

The utility model discloses a brewing unit, which includes a brewing head fixed on a frame and a brewing seat movably arranged on the frame, the brewing seat reciprocates toward the brewing head, the brewing seat includes a brewing cup and a piston, the brewing cup is provided with a brewing cavity, the top of the brewing cup is provided with an opening connected to the brewing cavity, the piston reciprocates in the brewing cavity, a push rod extending out of the brewing cup is provided on the side of the piston away from the opening, the end of the push rod is a push-out surface, a rack is provided on the side of the push rod, the brewing cup is provided with a transmission wheel rotating around a fixed axis, the transmission wheel is meshed with the rack, and the transmission wheel is provided with a swing rod rotating with the transmission wheel. The brewing unit of the utility model has a simple structure and is easy to clean, and the overall structure of the coffee machine used in conjunction with the brewing unit is relatively simplified.

Description

Brewing unit and coffee machine

Technical Field

The utility model relates to the technical field of coffee machines, in particular to a brewing unit and a coffee machine using the same.

Background

At present, a plurality of full-automatic coffee machines designed for realizing the rapid coffee making are available on the market, and the coffee making process comprises the steps of grinding beans, filling, pressing powder, brewing, deslagging, cleaning and the like. Wherein the brewing mechanism is the key component to accomplish the above steps. The infusion set of the coffee machine as disclosed in patent CN101877981B, the double speed mechanism of the infusion cylinder has a unidirectional ratchet mechanism with which two intermeshing gears interact, is structurally complex and inconvenient to clean.

Disclosure of utility model

The utility model aims to provide a brewing unit with a simple structure.

The object of the present utility model is thus achieved.

The brewing unit comprises a brewing head fixed on the frame and a brewing seat movably arranged on the frame, wherein the brewing seat reciprocates towards the brewing head, the brewing seat comprises a brewing cup and a piston, the brewing cup is provided with a brewing cavity, the top of the brewing cup is provided with an opening communicated with the brewing cavity, the piston reciprocates in the brewing cavity, one side of the piston away from the opening is provided with a push rod extending out of the brewing cup, the end part of the push rod is an ejection surface, a rack is arranged on the side surface of the push rod, the brewing cup is provided with a driving wheel rotating around a fixed shaft, the driving wheel is meshed with the rack, and the driving wheel is provided with a swinging rod rotating along with the driving wheel.

The above technical solution can be further perfected as follows.

Further, the frame is provided with a touch block, the swing rod is located above the touch block, the brewing seat is far away from the brewing head, and the swing rod contacts the touch surface of the touch block, so that the piston is retracted into the brewing cavity.

Further, the frame activity is equipped with the kicking block, and the kicking block has first position and second position, and the kicking block removes first position, and the kicking block avoids the ejector pin, and the kicking block removes the second position, and the kicking block removes to the alignment top face.

Further, the ejector block moves to the second position, the brewing seat moves away from the brewing head, and the ejection surface of the ejector rod abuts against the ejector block, so that the ejector block abuts against the touch block. The ejector block better supports the ejector rod by propping against the touch block.

Further, the top block is driven to rotate by a motor shaft of the motor.

Further, a scum scraping plate is arranged on the top surface of the brewing seat, a rotating shaft is arranged on one side of the scum scraping plate and rotates along the rotating shaft, a spiral curved plate is arranged on one side of the brewing seat by the rotating shaft, a bump block is arranged on the corresponding frame, the inner end of the bump block is propped against the coffee machine by a spring, the outer end of the bump block extends into the moving track of the spiral curved plate,

The brewing seat moves towards the direction of the brewing head, the spiral curved plate passes through the collision block to enable the collision block to retract and squeeze the spring,

The brewing seat moves away from the brewing head, and the collision block enables the slag scraping plate to rotate around the rotating shaft through the spiral curved plate.

Further, the brewing seat also comprises a bearing frame, the bearing frame is detachably connected with the brewing cup, the fixed shaft is rotationally fixed on the bearing frame, and the outer end of the swing rod extends out of the bearing frame.

Further, a guide groove and a driving mechanism are arranged on the frame, and the driving mechanism drives the brewing seat to reciprocate along the guide groove.

Further, the driving wheel is a sector tooth.

Further, a coffee machine comprises the brewing unit.

The brewing unit has a simple structure, is easy to clean, and is matched with the brewing unit for use, and the whole structure is relatively simplified.

Drawings

Fig. 1 is a schematic structural view of a brewing unit.

Fig. 2 is a powder loading schematic diagram of the brewing unit.

Fig. 3 is a schematic turning view of the brewing unit.

Fig. 4 is a schematic view of the brewing unit brewing coffee.

Fig. 5 is a schematic view showing the brewing base in the brewing unit moving to the second position away from the brewing head and the top block.

Fig. 6 is a schematic view of a piston ejecting a coffee cake in a brewing unit.

Fig. 7 is a schematic view in the direction A-A in fig. 6.

Fig. 8 is a schematic view of the pushing out of a coffee cake by the scum plate in the brewing unit.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

1-8, The coffee maker comprises a frame 1 and a brewing unit. The frame 1 is provided with a coffee funnel 8 and a waste cartridge 9.

The brewing unit comprises a brewing head 6 fixed on the frame 1 and a brewing seat 2 movably arranged on the frame 1, wherein the brewing seat 2 reciprocates towards the direction of the brewing head.

The brewing seat 2 comprises a brewing cup 3 and a piston 4, the brewing cup 3 is provided with a brewing cavity 30, the top of the brewing cup 3 is provided with an opening 31 communicated with the brewing cavity 30, and the piston 4 reciprocates in the brewing cavity 30. The side of the piston 4 away from the opening 31 is provided with a push rod 41 extending out of the brewing cup 3, the end part of the push rod 41 is a push-out surface 40, the side surface of the push rod 41 is provided with a rack 42, the brewing cup 3 is provided with a driving wheel 5 rotating around the fixed shaft 22, the driving wheel 5 is meshed with the rack 42, and the driving wheel 5 is provided with a swinging rod 51 rotating along with the driving wheel. The swing rod 51 and the driving wheel 5 are integrally formed or fixedly connected. Preferably, the driving wheel 5 is a sector tooth.

The frame 1 is correspondingly provided with a touch block 300, and the swinging rod 51 contacts the touch surface 301 of the touch block 300, so that the piston 4 is retracted into the brewing cavity 30. In this embodiment, the swing link 51 is located above the touch surface 301 of the touch block 300. The pendulum rod 51, the touch pad 300 and the touch surface 301 are shaped as shown in the figure.

The brewing base 2 further comprises a carrier 20, through which the brewing cup 3 is arranged to reciprocate within the frame 1. Preferably, the carrier 20 and the brewing cup 3 are detachably connected. The frame 1 is provided with a guide slot 10 and a driving mechanism for guiding the brewing cup 3 to reciprocate. The brewing cup 3 or the carrier 20 is provided with a projection 21 which is inserted into the guide channel 10. In this embodiment, the outer end of the swing link 51 extends outside the carrier 20.

The guide channel 10 comprises a lower section 100 guiding the brew chamber 30 to receive powder and an upper section 200 guiding the brew chamber 30 towards or away from the brew head 6. With the boss 21 in the lower section 100, the brew cup 3 is upright and the opening 31 of the brew chamber 30 is located below the coffee funnel 8. With the boss 21 in the upper section 200, the brew cup 3 is tilted so that the opening 31 of the brew chamber 30 is directed towards the brew head 6. The brewing head 6 is obliquely fixed in the frame 1, the inclination angles of the brewing cup 3 and the brewing head 6 are consistent, and the central axes of the brewing cavity 30 and the brewing head 6 are coincident.

The driving mechanism comprises a driving motor (not shown in the figure), a screw rod 11, a nut 12 and a rotating shaft 13, wherein the screw rod 11 is parallel to the brewing head 6, the nut 12 is sleeved on the screw rod 11 in a threaded manner, the nut 12 is fixedly connected with the brewing cup 3 or the bearing frame 20 through the rotating shaft 13 in a pivot manner, the driving motor drives the screw rod 11 to rotate, the nut 12 moves on the screw rod 11, the nut 12 drives the brewing seat 2 to integrally move through the rotating shaft 13, and meanwhile, the brewing seat 2 rotates through the rotating shaft 13, namely, in the process of moving from the lower section 100 to the upper section 200, the opening 31 of the brewing cup 3 is turned from the alignment coffee funnel 8 to the alignment brewing head 6.

The brewing seat 2 further comprises a scraping plate 23, a rotating shaft 24 is arranged on one side of the scraping plate 23, and a spiral curved plate 25 is arranged on one side of the brewing seat 2 on the rotating shaft 24. The corresponding frame 1 is provided with a bump block 14, the inner end of the bump block 14 is propped against the frame 1 through a spring 15, and the outer end of the bump block 14 extends into the moving track of the spiral curved plate 25. When the brewing seat 2 moves towards the brewing head 6, the spiral curved plate 25 presses the bump 14 and compresses the spring 15, and the brewing seat 2 can pass through the bump 14. When the brewing seat 2 moves away from the brewing head 6, the spiral curved plate 25 passes through the bump block 14 again, and as the bump block 14 drives the rotating shaft 24 to rotate through the spiral curved plate 25, the rotating shaft 24 drives the scum scraping plate 23 to rotate, and the scum scraping plate 23 pushes the coffee cakes of the brewing seat 2 into the waste residue box 9. Until the bump 14 is disengaged from the spiral curve 25. A reset mechanism (such as a torsion spring) and a stop block are arranged between the slag scraping plate 23 and the brewing seat 2, the reset mechanism enables the slag scraping plate 23 to be propped against the stop block, and after the collision block 14 enables the slag scraping plate to rotate, the reset mechanism pushes the slag scraping plate 23 to reset.

The frame 1 is provided with a top block 70 and a motor 71, and the top block 70 is driven to rotate by a motor shaft of the motor 71. The ejector 70 moves to have a first position and a second position, the ejector 70 moves to the first position, the ejector 70 is retracted from the ejector 41 of the brew seat 2, and the ejector 70 moves to the second position, i.e. the ejector 70 moves to align with the ejection face 40. The top block 70 may also be moved between the first position and the second position by a translation mechanism or the like.

When the opening 31 of the brewing cup 3 is aligned with the brewing head 6, the ejector block 70 is moved to align with the ejection face 40, the brewing cup 3 is moved until the ejection face 40 of the piston 4 abuts against the ejector block 70, and the brewing cup 3 continues to move the piston 4 towards the opening 31.

The coffee funnel 8 is arranged in the frame 1, the opening 31 of the brew cup 3 is aligned with the coffee funnel 8, and the coffee funnel 8 is offset a distance slightly towards the side remote from the brew head 6. The waste cartridge 9 is arranged in the frame 1 below the brewing head 6. The brew head 6 is prior art and will not be described in detail in this embodiment.

The brewing unit operates.

Referring to fig. 1, in the initial position, the infusion seat 2 is entirely vertical, the opening 31 of the infusion cup 3 is aligned with the coffee funnel 8, the piston 4 is retracted into the infusion chamber 30 (the piston 4 is in the lowest position of the infusion chamber 30).

Referring to fig. 2, the coffee beans are ground into coffee grounds by a bean grinding assembly (not shown) of the coffee machine, and the coffee grounds enter the brew chamber 30 via the coffee funnel 8 until the coffee grounds are filled to a predetermined amount, and the bean grinding assembly stops.

Referring to fig. 3, the drive motor drives the screw 11 to rotate so that the nut 12 moves upwards, and the nut 12 drives the carrier 20 and the brewing cup 3 to move upwards together, and the boss 21 of the carrier 20 also moves in the guide groove 10. When the boss 21 moves from the lower segment 100 into the upper segment 200, the brew seat 2 rotates about the rotation axis 13, aligning the opening 31 of the brew cup 3 with the brew head 6.

The brewing cup 3 continues to move towards the brewing head 6, during which it passes over the bump 14 without the scraper 23 being activated.

Referring to fig. 4, until the brew head 6 enters the brew cup 3 from the opening 31, the piston 4 and brew head 6 cooperate to compact the coffee grounds into a cake shape, at which time the top piece 70 is moved from a first position to a second position, i.e. with one end of the top piece 70 abutting against the touch piece 300.

The brew head 6 injects hot water into the brew chamber 30 to complete the brewing of the coffee.

Referring to fig. 5 and 6, the drive motor drives the screw 11 to rotate in opposite directions to move the nut 12 downwards, and the nut 12 drives the carrier 20 and the brewing cup 3 to move downwards together. In this process, the piston 4 passes through the ejector rod 41 and is propped against the ejector block 70, the ejector rod 41 makes the ejector block 70 prop against the touch block 300, so that the piston 4 cannot move downwards, and in the process of moving the brewing cup 3 downwards, the piston 4 moves upwards relative to the brewing cup 3, that is, the piston 4 pushes the coffee cake to move out of the opening 31, and meanwhile, the ejector rod 41 of the piston 4 drives the driving wheel 5 to rotate anticlockwise, that is, the swing rod 51 rotates downwards. The top block 70 moves from the second position to the first position.

With reference to fig. 7, the infusion cup 3 continues to move downwards, the bump 14 will abut against the spiral curved plate 25, moving the scraper 23 to push the coffee cake away from the infusion seat 2, which falls into the waste bin 9.

Referring to fig. 8, until the swing link 51 contacts the contact surface 301 of the contact block 300, the brewing cup 3 continues to move downward, the swing link 51 is blocked by the contact block 300, and the swing link 51 rotates the driving wheel 5 clockwise, so that the piston 4 is retracted to the lowest position in the brewing chamber 30. When the stud 21 moves from the upper section 200 into the lower section 100, the brew seat 2 rotates about the rotation axis 13, realigning the opening 31 of the brew cup 3 with the coffee funnel 8.

It should be noted that the coffee machine includes an electric control device, and the above-mentioned process can be automatically completed by control of the electric control device through a preset program.

Claims (10)

1. The brewing unit comprises a brewing head fixed on the frame and a brewing seat movably arranged on the frame, wherein the brewing seat reciprocates towards the brewing head, the brewing seat comprises a brewing cup and a piston, the brewing cup is provided with a brewing cavity, the top of the brewing cup is provided with an opening communicated with the brewing cavity, and the piston reciprocates in the brewing cavity.

2. The brewing unit according to claim 1, wherein the frame is provided with a contact block, the rocker is located above the contact block, the brewing seat is remote from the brewing head, and the rocker contacts the contact surface of the contact block, causing the piston to retract into the brewing chamber.

3. The brewing unit of claim 2, wherein the frame is movably provided with a top block having a first position and a second position, the top block being moved to the first position, the top block avoiding the top bar, the top block being moved to the second position, the top block being moved to align the top surface.

4. A brewing unit according to claim 3 wherein the ejector block is moved to the second position and the brewing seat is moved away from the brewing head, the ejector surface of the ejector rod abutting the ejector block to bring the ejector block into abutment with the touch block.

5. A brewing unit according to claim 3, wherein the frame is provided with a motor and the top piece is driven in rotation by the motor shaft of the motor.

6. The brewing unit according to claim 1, wherein the top surface of the brewing seat is provided with a scum scraping plate, one side of the scum scraping plate is provided with a rotating shaft and rotates along the rotating shaft, the rotating shaft is provided with a spiral curved plate on one side of the brewing seat, the corresponding frame is provided with a bump block, the inner end of the bump block is propped against the coffee machine through a spring, the outer end of the bump block extends into the moving track of the spiral curved plate,

The brewing seat moves towards the direction of the brewing head, the spiral curved plate passes through the collision block to enable the collision block to retract and squeeze the spring,

The brewing seat moves away from the brewing head, and the collision block enables the slag scraping plate to rotate around the rotating shaft through the spiral curved plate.

7. The brewing unit of claim 1, wherein the brewing base further comprises a carrier, the carrier and the brewing cup are detachably connected, the fixed shaft is rotatably fixed on the carrier, and the outer end of the swing rod extends out of the carrier.

8. The brewing unit according to claim 1, wherein the frame is provided with a guide slot and a driving mechanism, and the driving mechanism drives the brewing seat to reciprocate along the guide slot.

9. Brewing unit according to claim 1, characterized in that the transmission wheel is a sector-shaped tooth.

10. A coffee machine comprising a brewing unit according to any one of claims 1 to 9.