CN210783971U - Beverage extraction unit and beverage preparation machine - Google Patents

Abstract

The embodiment of the utility model discloses beverage extraction unit and beverage preparation machine, beverage extraction unit includes: the beverage brewing device comprises a first fixing plate, a second fixing plate, a beverage outlet seat, a brewing assembly and a pushing mechanism, wherein the brewing assembly comprises a brewing device, the pushing mechanism comprises a push rod, a rocker arm, a first reset piece and a second reset piece, the push rod is movably arranged in the brewing device in a penetrating mode, one end of the rocker arm is fixed between the first fixing plate and the second fixing plate, the other end of the rocker arm is a movable end, a resisting part extends from the tail end of the movable end, in an extraction working cycle, the resisting part and the push rod alternately act between separation and contact, and when the resisting part and the push rod are in a contact state, the resisting part can enable the push rod to move upwards relative to the brewing device and can limit the push rod to move downwards relative to the brewing device. In this way, the beverage extraction unit of the embodiment of the utility model has the advantages of simple structure and reliable operation.

Description

Beverage extraction unit and beverage preparation machine

Technical Field

The embodiment of the utility model provides a relate to beverage preparation technical field, especially relate to a beverage extraction unit and beverage preparation machine.

Background

The existing full-automatic coffee machine generally comprises a brewing assembly and a brewing head, wherein the brewing head can move relative to the brewing assembly to realize compaction, brewing and extraction of coffee powder or coffee capsules, and after extraction is finished, the coffee powder or the coffee capsules can be separated from the brewing assembly by turning over the brewing assembly and driving a pushing mechanism.

Patent CN204909079U discloses an automatic device and coffee machine of empting of coffee ground, and it includes actuating mechanism and pushing mechanism, and actuating mechanism is used for driving the funnel after having boiled coffee and rotates to predetermineeing the angle, and pushing mechanism is used for the funnel rotate to predetermineeing the angle after with coffee ground in the funnel is followed release in the funnel, wherein, pushing mechanism includes ejector pin, ejector pad and power supply, and the one end of ejector pin sets up in the funnel hole of funnel, and the other end rotates when predetermineeing the angle towards the ejector pad at the funnel, and the ejector pad is connected with the power supply to promote the ejector pin and move in the funnel.

The inventor discovers that: such a mechanism not only needs two power sources, and is relatively high in cost, and the moving part is blocked easily in work, and even has the defect of being stuck, for example, under the condition that the push rod is pushed to move in the funnel when the funnel rotates to a preset angle, the situation that the push rod is stuck in the funnel can occur.

Disclosure of Invention

The embodiment of the utility model provides a technical problem who mainly solves provides a simple structure, reliable operation's beverage extraction unit and beverage preparation machine.

In order to achieve the above object, the utility model discloses a technical scheme be: there is provided a beverage extraction unit for a beverage preparation machine comprising: the beverage brewing device comprises a first fixing plate, a second fixing plate, a beverage outlet seat, a brewing assembly and a pushing mechanism;

the beverage outlet seat is fixedly arranged between the first fixing plate and the second fixing plate, the brewing assembly is movably arranged between the first fixing plate and the second fixing plate, the brewing assembly can do linear motion and turnover motion relative to the beverage outlet seat, the brewing assembly comprises a brewing device, and a brewing cavity for containing materials is arranged in the brewing device;

the pushing mechanism comprises a push rod, a rocker arm, a first reset piece and a second reset piece, the push rod is movably arranged in the brewing device in a penetrating mode, one end of the rocker arm is fixed between the first fixing plate and the second fixing plate, the other end of the rocker arm is a movable end, the first reset piece is arranged between the movable end and the first fixing plate and the second fixing plate, and the second reset piece is arranged between the push rod and the brewing device;

the brewing device comprises a brewing component, a push rod and a movable end, wherein the movable end is provided with a stopping part in an extending mode, the stopping part and the push rod alternately act between disconnection and contact in an extraction working cycle, when the stopping part and the push rod are in a contact state, the stopping part can enable the push rod to move upwards relative to the brewing device and can limit the push rod to move downwards relative to the brewing device, and therefore materials in a brewing cavity can be separated from the brewing device in the process that the brewing component is turned to a set angle.

Optionally, the brewing assembly further comprises a second pressure increasing disc, the second pressure increasing disc is accommodated in a cavity of the brewing cavity, and the push rod penetrates through the bottom of the brewing device and is connected with the second pressure increasing disc so as to drive the second pressure increasing disc to slide up and down between the bottom and the top opening of the brewing cavity.

Optionally, the beverage outlet seat comprises a fixed seat and a first pressure increasing plate, wherein the first pressure increasing plate is in a round cake shape and is fixedly connected to one end, extending towards the brewing assembly, of the fixed seat;

in the process that the brewing device moves towards the beverage outlet seat, the first pressurizing disc can slide into the brewing cavity and is tightly matched with the second pressurizing disc to compact materials.

In an embodiment, the beverage extraction unit further comprises a residue scraping mechanism, the residue scraping mechanism is fixedly installed between the first fixing plate and the second fixing plate, and the residue scraping mechanism is used for scraping materials on the second pressurizing disc during the process that the brewing assembly is turned over to a set angle.

Optionally, the slag scraping mechanism comprises a door-shaped support frame, a hopper and a scraper;

two stand columns of door font support frame respectively with first fixed plate with the second fixed plate is fixed mutually, the funnel slope is installed on the crossbeam of door font support frame, the scraper is fixed the bottom of funnel just is close to the one end of drink export seat.

Optionally, the funnel has a funnel opening in the center, and when the brewing assembly is turned to a set angle, the funnel opening is aligned with the top opening of the brewing chamber, so that the material can be conveyed into the brewing chamber through the funnel opening.

In an embodiment, the first reset piece comprises two reset springs, one ends of the two reset springs are respectively connected to two sides of the tail end of the movable end of the rocker arm, and the other ends of the two reset springs are respectively fixed on the first fixing plate and the second fixing plate;

and/or the second reset piece comprises two spring thrust rods, one ends of the two spring thrust rods are fixed on the two opposite sides of the brewing device, and the other ends of the two spring thrust rods and the bottom of the push rod are kept relatively fixed through a connecting plate.

In some embodiments, the beverage extraction unit further comprises a transmission assembly, the transmission assembly is connected with the brewing assembly, and the first fixing plate and the second fixing plate are both provided with a guide mechanism, and the transmission assembly drives the brewing assembly to make linear motion and turnover motion relative to the beverage outlet seat through the guide mechanism;

the transmission assembly comprises a crank connecting rod mechanism and a transmission shaft which are fixed with each other, the crank connecting rod mechanism is connected with the brewing device, the transmission shaft is used for being connected with the driving unit, and the transmission shaft and the crank connecting rod mechanism rotate for a circle in one extraction working cycle.

Optionally, the guide mechanism includes a linear chute and a turnover chute, the linear chute is disposed parallel to the longitudinal direction of the first fixing plate and the second fixing plate, the turnover chute includes a first section of guide slot and a second section of guide slot forming a preset angle with the first section of guide slot, the first section of guide slot is parallel to the linear chute, and the second section of guide slot extends from one end of the first section of guide slot away from the beverage outlet seat to the linear chute;

the brewing device is characterized in that a main pin shaft and a driven pin shaft are arranged on two opposite sides of the brewing device, the crank connecting rod mechanism is connected with the main pin shaft, and the main pin shaft and the driven pin shaft are respectively arranged in the linear chute and the overturning chute in a penetrating mode.

Optionally, the crank-link mechanism includes a first crank, a second crank, a first crank pin, a second crank pin, and a first link and a second link respectively hinged to two ends of the second crank pin, the transmission shaft and the first crank are fixed to each other, and the first crank pin and the second crank pin are respectively inserted into two crank pin holes facing each other on the first crank and the second crank;

the other ends of the first connecting rod and the second connecting rod are respectively sleeved on the main pin shafts on two sides of the brewing device.

Optionally, the first crank pin and the second crank pin are both arranged parallel to the drive shaft, the first crank pin extending axially relative to the drive shaft, the second crank pin being spaced a radial distance from the first crank pin;

the first crank pin is arranged in the drink outlet base in a penetrating mode, and the first crank and the second crank are located on two opposite sides of the drink outlet base.

An embodiment of the utility model provides a beverage preparation machine is still provided, including going out liquid subassembly, water supply connector and, as above the beverage extraction unit go out the liquid subassembly with water supply connector respectively with the connection can be dismantled to the beverage extraction unit.

The embodiment of the utility model provides a beneficial effect is: different from the prior art, the beverage extraction unit of the embodiment of the utility model comprises a first fixing plate, a second fixing plate, a beverage outlet seat, a brewing component and a pushing mechanism, wherein the brewing component comprises a brewing device, the pushing mechanism comprises a push rod, a rocker arm, a first reset piece and a second reset piece, the push rod is movably arranged in the brewing device in a penetrating way, one end of the rocker arm is fixed between the first fixing plate and the second fixing plate, the other end of the rocker arm is a movable end, the tail end of the movable end is provided with a resisting part in an extending way, in an extraction working cycle, the resisting part and the push rod alternately act between disconnection and contact, through the interaction of the resisting part and the push rod, a power mechanism is not needed to be arranged, the structure is simple, furthermore, in the process that the brewing device is linearly far away from the beverage outlet seat, the resisting part can simultaneously push the push rod to move in the brewing device, the phenomenon of blocking in the push, the operation is reliable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

Figure 1 is a schematic structural view of a beverage preparation machine according to an embodiment of the present invention;

figure 2 is a schematic view of the internal structure of a beverage preparation machine according to an embodiment of the present invention;

figure 3 is a schematic view of another internal structure of the beverage preparation machine of an embodiment of the present invention;

FIG. 4 is a schematic diagram of a beverage extraction unit according to an embodiment of the present invention;

fig. 5 is an exploded view of a beverage extraction unit according to an embodiment of the present invention;

fig. 6 is a cross-sectional view of a beverage extraction unit of an embodiment of the present invention;

fig. 7 is a schematic structural view of a crank link mechanism of a beverage extraction unit according to an embodiment of the present invention;

FIG. 8A is a first schematic diagram of the movement of the brewing device driven by the crank-link mechanism according to the embodiment of the present invention;

FIG. 8B is a second schematic diagram of the movement of the brewing device driven by the crank-link mechanism according to the embodiment of the present invention;

FIG. 8C is a third schematic diagram of the movement of the brewing device driven by the crank-link mechanism according to the embodiment of the present invention;

FIG. 8D is a fourth schematic diagram of the movement of the brewing device driven by the crank-link mechanism according to the embodiment of the present invention;

FIG. 8E is a schematic diagram of the movement of the brewing device driven by the crank-link mechanism according to the embodiment of the present invention;

FIG. 9 is a cross-sectional view of a brewer of a beverage extraction unit according to an embodiment of the present invention in a first position, with parts omitted;

FIG. 10 is a cross-sectional view of a brewer of a beverage extraction unit according to an embodiment of the present invention in an up phase, with parts omitted;

FIG. 11 is a cross-sectional view of a brewer of a beverage extraction unit according to an embodiment of the present invention, with parts omitted, in an extraction stage;

fig. 12 is a cross-sectional view of a brewer of a beverage extraction unit according to an embodiment of the present invention in a lowered stage, with parts omitted.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-3, a beverage preparation machine 1 according to an embodiment of the present invention includes: the beverage extraction device comprises a shell 10, and a beverage extraction unit 20 and a driving unit 30 which are arranged in the shell, wherein a liquid outlet assembly 11 is fixed on the shell 10, and the liquid outlet assembly 11 is used for outputting brewed beverages; a water inlet connector 12 is also provided inside the housing 10, and the liquid outlet assembly 11 and the water inlet connector 12 are detachably connected to the beverage extraction unit 20, respectively, so that the beverage extraction unit 20 can be taken out when the machine is maintained or cleaned.

In an embodiment, the beverage preparation machine 1 further comprises a water tank 40, the water tank 40 is used for providing hot water with a certain temperature and a certain pressure required by the beverage extraction unit 20 during extraction, the water tank 40 and the water inlet connector 12 are connected through a water pipe 13, and the water pipe 13 is a high-pressure and high-temperature resistant hose.

In an embodiment, the beverage preparation machine 1 further comprises a material bin 14 for loading ground material (e.g. coffee powder, tea powder, etc.) which is automatically or manually added to the beverage extraction unit 20 at the start of each extraction cycle.

As shown in fig. 4 and 5, the beverage extraction unit 20 includes: a first fixing plate 100, a second fixing plate 200, a drink outlet base 300, a brewing assembly 400 and a transmission assembly 500; a space for accommodating the beverage outlet base 300 and the brewing assembly 400 is formed between the first fixing plate 100 and the second fixing plate 200, the beverage outlet base 300 is fixedly installed between the first fixing plate 100 and the second fixing plate 200, the brewing assembly 400 is movably installed between the first fixing plate 100 and the second fixing plate 200 and can move relative to the beverage outlet base 300 along the first fixing plate 100 and the second fixing plate 200, and the transmission assembly 500 is respectively connected with the brewing assembly 400 and the driving unit 30 and is used for driving the brewing assembly 400 to move.

The first fixing plate 100 and the second fixing plate 200 are both in the shape of a long strip and are flat, and the first fixing plate 100 and the second fixing plate 200 are arranged in parallel and are mirror-symmetrical. Referring to fig. 6, the beverage outlet base 300 includes a fixing base 310, a first pressure increasing plate 320 and a water outlet port 330, two opposite sides of the fixing base 310 are respectively and fixedly connected to one end of the first fixing plate 100 and one end of the second fixing plate 200, the first pressure increasing plate 320 is in a circular cake shape and is fixedly connected to one end of the fixing base 310 extending towards the brewing assembly 400, the water outlet port 330 is disposed on the first pressure increasing plate 320, and the water outlet assembly 11 is connected to the beverage extraction unit 20 through a water outlet pipe (not shown) and the water outlet port 330.

The brewing assembly 400 comprises a brewing device 410 and a second pressurizing disc 420, wherein a brewing cavity 411 for containing materials is arranged inside the brewing device 410, the second pressurizing disc 420 is contained in the cavity of the brewing cavity 411, the outer side surface of the second pressurizing disc 420 is in clearance fit with the inner wall surface of the brewing cavity 411, and the second pressurizing disc 420 can slide up and down between the bottom and the top opening of the brewing cavity 411.

The brewing assembly 400 further comprises a water inlet port 430 arranged on the brewing device 410, the water inlet port 430 is communicated with the brewing chamber 411, and the brewing device 410 is connected with the water inlet connector 12 through the water inlet port 430; in other embodiments, the water inlet joint may also be disposed on the first pressurizing disk 320.

The brewing device 410 can move towards or away from the beverage outlet base 300 under the driving of the transmission component 500, and the size of the first pressure increasing disc 320 is matched with the inner size of the brewing cavity 411, so that the first pressure increasing disc 320 can slide into or out of the brewing cavity 411 in the process that the brewing device 410 moves towards or away from the beverage outlet base 300; when the brewing device 410 moves towards the beverage outlet base 300, the sliding direction of the first pressure increasing disc 320 in the brewing cavity 411 is the same as the depth direction of the brewing cavity 411, so that the first pressure increasing disc and the second pressure increasing disc 420 in the brewing cavity 411 are tightly matched to compress materials, and a better extraction effect is achieved.

As shown in fig. 7, the driving assembly 500 includes a crank link mechanism 510 and a driving shaft 520, and the crank link mechanism 510 includes a first crank 511, a second crank 512, a first crank pin 513, a second crank pin 514, and a first connecting rod 515 and a second connecting rod 516 respectively hinged at both ends of the second crank pin 514.

The transmission shaft 520 and the first crank 511 are fixed to each other, and the first crank pin 513 and the second crank pin 514 are respectively arranged in two opposite crank pin holes of the first crank 511 and the second crank 512 in a penetrating manner; the first crank pin 513 and the second crank pin 514 are both arranged parallel to the transmission shaft 520, the first crank pin 513 extends axially relative to the transmission shaft 520, the second crank pin 514 is spaced a radial distance from the first crank pin 513, the first crank pin 513 is also accommodated in the holder 310, and the first crank 511 and the second crank 512 are located on opposite sides of the holder 310 to maintain the stability of the crank linkage 510 during movement and to make the volume of the entire brewing unit more compact.

The crank-link mechanism 510 is connected to the driving unit 30 through a transmission shaft 520, for example, the driving unit 30 is a driving motor, the transmission shaft 520 is connected to an output shaft of the driving unit 30 through a bevel gear pair, and when the driving motor 30 works, the transmission shaft 520 is driven to rotate, so as to drive the crank-link mechanism 510 to link.

Referring back to fig. 4, two opposite sides of the brewing device 410 are respectively provided with a main pin shaft 412, and the other ends of the first connecting rod 515 and the second connecting rod 516 are respectively sleeved on the main pin shafts 412 on the two sides of the brewing device 410, so that when the crank-link mechanism 510 is linked, the brewing device 410 is driven by the first connecting rod 515 and the second connecting rod 516 to move relative to the beverage outlet base 300. Wherein, at the beginning of an extraction cycle, the brewer 410 is in a first position, which is an extreme position when the brewer 410 is away from the beverage outlet base 300; during extraction, the brewer 410 is in a second position, which is an extreme position when the brewer is moved to mate with the beverage outlet base 300; after the extraction is completed, the brewer 410 is returned to the first position.

Further, the first fixing plate 100 and the second fixing plate 200 are each provided with a guide mechanism for forming a movement track for guiding the operation of the brewer 410, so that the brewer 410 can be turned over once during the movement from the first position to the second position or during the movement from the second position to the first position.

Specifically, the first fixing plate 100 and the second fixing plate 200 are both provided with a linear chute 110 and an overturning chute 120, the main pin 412 is inserted into the linear chute 110, the two opposite sides of the brewing device 410 are also respectively provided with a driven pin 413, the driven pin 413 is inserted into the overturning chute 120, and the main pin 412 and the driven pin 413 are respectively matched with the linear chute 110 and the overturning chute 120 to guide the brewing device 410 to move up and down and overturn relative to the beverage outlet base 300.

The linear sliding groove 110 is arranged in parallel to the longitudinal direction of the first fixing plate 100 and the second fixing plate 200, the turnover sliding groove 120 includes a first section of guide groove 121 and a second section of guide groove 122 which forms a preset angle (e.g., 90 °) with the first section of guide groove 121, the first section of guide groove 121 is arranged in parallel to the linear sliding groove 110, the second section of guide groove 122 is opposite to the direction of the linear sliding groove 110 from one end of the first section of guide groove 121, which is far away from the beverage outlet seat 300, and the first section of guide groove 121 and the second section of guide groove 122 are in transition connection by adopting an arc 413 at the connection position, and the turnover motion of the brewing device 410 is realized by changing the motion track of the driven pin shaft in the turnover sliding groove 120, and the turnover angle of the brewing device 410 is determined.

Taking the brewing device 410 moving from the second position to the first position as an example, as shown in fig. 8A, when extracting, the distances from the main pin 412 to the two side walls of the brewing device 410 are equal in a cross-sectional view, that is, T1 is T2, the center line L of the brewing device 410 coincides with the center line L1 of the linear chute 110, the distance F1 from the main pin 412 to the bottom of the brewing device 410 is greater than the distance F2 from the driven pin 413 to the bottom of the brewing device 410, and the upper and lower ends of the linear chute 110 both exceed the upper and lower ends of the turnover chute 120.

As shown in fig. 8B, after the extraction is completed, the driving unit 30 drives the transmission shaft 520 to rotate, the connecting rod of the crank-link mechanism 510 moves downwards along the central line L1 of the linear chute 110, and drives the brewer 410 to gradually separate from the beverage outlet base 300, and the radial distance P between the main pin 412 and the driven pin 413 is kept constant during the motion of the brewer 410.

As shown in fig. 8C, after the driven pin 413 moves to the connection point of the first section of guide slot 121 and the second section of guide slot 122, because the radial distance P between the main pin 412 and the driven pin 413 remains unchanged, as the main pin 412 is driven by the connecting rod to move downwards continuously, the moving direction of the driven pin 413 at the connection point is changed, and the vertical movement is changed from up to down to horizontal linear movement, at this time, the brewing chamber 410 starts to turn over in the set direction from the vertical movement up and down relative to the beverage outlet base 300, and the central line L of the brewer 410 deviates from the central line L1 of the linear chute in the cross-sectional view.

As shown in fig. 8D, when the main pin 412 moves downward to the lowest position of the linear chute 110, the brewing device 410 is also turned to the maximum angle K, completing one extraction cycle; at the beginning of the next extraction cycle, as shown in fig. 8E, as the drive shaft 520 continues to rotate, the linkage moves upward, pulling the brewer 410 to flip to the vertical position, where the center line L of the brewer 410 in cross-section coincides with the center line L1 of the linear chute 110, and the brewer 410 begins to move upward along the center line L1 of the linear chute 110.

In this embodiment, the driving unit 30, the transmission shaft 520 and the crank-link mechanism 510 all rotate along one direction, and the driving unit 30 drives the transmission shaft 520 to rotate for one circle to complete one extraction work cycle; by providing the crank mechanism 510, the brewer 410 can be returned to the initial position without the driving unit 30 rotating in the forward and reverse directions alternately, and the brewer 410 can be turned during the movement by the design of the linear chute 110 and the turning chute 120.

Referring to fig. 5 and 6 again, the beverage extraction unit 20 further includes a residue scraping mechanism 600, the residue scraping mechanism 600 is fixedly installed between the first fixing plate 100 and the second fixing plate 200, the residue scraping mechanism 600 includes a door-shaped support frame 610, a funnel 620 and a scraper 630, two columns of the door-shaped support frame 610 are respectively fixed to the first fixing plate 100 and the second fixing plate 200, the funnel 620 is obliquely installed on a cross beam of the door-shaped support frame 610, and the scraper 630 is fixedly installed at the bottom of the funnel 620 and is close to one end of the beverage outlet base 300.

The funnel 620 has a funnel opening at the center, when the brewing device 410 is turned to the maximum angle, the funnel opening is aligned with the top opening of the brewing chamber 411, and the material stored in the material bin 14 can be conveyed into the brewing chamber 411 through the funnel opening after being quantified by the powder meter.

In an extraction cycle, the brewer 410 moves from the first position to the second position and then returns to the first position, during which the brewer 410 passes sequentially from the powder loading position, the extraction position, the powder scraping position, the powder loading position, and correspondingly, an extraction cycle essentially comprises the following stages:

1. a powder filling stage, as shown in fig. 9, in which the brewer 410 is away from the beverage outlet base 300 and in a predetermined inclined position, the funnel mouth in the center of the funnel 620 is aligned with the opening of the brewing chamber 411;

2. the brewer 410 up phase, in which the brewer 410 is straightened and then moved upwards along the rectilinear chute 110 close to the beverage outlet seat 300 until the first pressure increasing disk 320 is located within the cavity of the brewing chamber 411, as shown in fig. 10;

3. an extraction stage, as shown in fig. 11, in which the brewing unit 410 is lifted to the maximum stroke, and high-pressure hot water flows into the brewing chamber 411 through the water inlet connector to fill the space between the first pressurizing plate 320 and the second pressurizing plate 420;

4. in the descending stage of the brewing device 410, as shown in fig. 12, the brewing device 420 moves downward away from the beverage outlet base 300 along the linear chute 110, and the extracted material dregs are ejected by the second pressure increasing plate 420 inside the brewing chamber 411 until reaching the top of the brewing chamber 411.

5. In the residue scraping stage, as the brewing device 410 continues to move, the central line L of the brewing device 410 is inclined to a set angle relative to the central line L1 of the linear chute, and in the process of overturning the brewing device 410, the scraper 630 in the residue scraping mechanism 600 scrapes the material residue on the top of the brewing chamber 411 and drops the material residue into the residue box.

In the above embodiment, referring back to fig. 5 and 6, the beverage extracting unit 20 further includes a pushing mechanism 700, and the pushing mechanism 700 includes a push rod 710, a swing arm 720, a first restoring member 730 and a second restoring member 740.

The push rod 710 penetrates through the bottom of the brewing device 410 and is connected with the second pressurizing disc 420 in the brewing cavity 411, one end of the rocker arm 720 is a fixed end and is fixed between the first fixing plate 100 and the second fixing plate 200, the other end of the rocker arm is a movable end and can swing up and down in an arc shape relative to the fixed end, a resisting part 721 is arranged at the tail end of the movable end of the rocker arm 720 in an extending mode, an arc-shaped surface is arranged on the resisting part 721 in a concave mode, and in an extraction working cycle, the resisting part 721 and the push rod 710 alternately act between disconnection and contact to drive the second pressurizing disc 420 to slide up and down between the bottom and the top opening of the brewing cavity 411.

The first restoring member 730 is disposed between the movable end of the swing arm 720 and the first and second fixing plates 100 and 200, for example, one end of the first restoring member 730 is connected to the end of the movable end of the swing arm 720, and the other end is fixed to the first fixing plate 100 or the second fixing plate 200. In one embodiment, the first reset member 730 includes two reset springs, one end of each of which is connected to both sides of the end of the movable end of the rocker arm 720, and the other end of each of which is fixed to the first fixing plate 100 and the second fixing plate 200.

The second restoring member 740 is disposed between the push rod 710 and the brewer 410, for example, one end of the second restoring member 740 is fixed to the brewer 410, and the other end is fixed to the bottom of the push rod 710. In one embodiment, the second restoring member 740 includes two spring thrust rods, one end of which is fixed to opposite sides of the brewer 410, and the other end of which is held in a fixed relation to the bottom of the push rod 710 by a connection plate.

As shown in fig. 9, in the powder filling stage, when the brewer 410 is in the predetermined inclined position, i.e., when the brewer 410 is in the first position, the push rod 710 is disengaged from the stop 721, and there is no interaction force; as shown in fig. 10, when the brewing device 410 is turned over at the rising stage of the brewing device 410, the push rod 710 contacts with the stopping part 721, the push rod 710 drives the rocker arm 720 to rotate upwards, and the first restoring member 730 is stretched or compressed; as the brewer 410 continues to move upward, the stop 721 disengages the push rod 710 and the rocker arm 720 returns to the original position, as shown in fig. 11, under the action of the first restoring member 730.

As shown in fig. 12, in the descending stage of the brewing chamber 410, after the bottom of the push rod 710 contacts the resisting part 721, the resisting part 721 interacts with the push rod 710 to limit the push rod 710 from moving downward relative to the center line of the linear chute 110, so that the push rod 710 moves upward relative to the center line of the brewing chamber 410, and at the same time, the first restoring member 730 is compressed or stretched, the second restoring member 740 is compressed, and as the brewing chamber 410 continues to descend, the extracted material residue is ejected out to the top opening of the brewing chamber 411 by the second pressure increasing plate 420 inside the brewing chamber 411 under the action of the push rod 710.

In the stage of scraping the powder slag, when the brewing device 410 starts to turn over, the bottom of the push rod 710 and the resisting part 721 keep in contact state to limit the push rod 710 to move downwards relative to the central line of the brewing device 410, and the scraper 630 can scrape the material slag at the top of the brewing cavity 411 and drop the material slag into the powder slag box; when the brewing device 410 is turned over to a set angle, the bottom of the push rod 710 is disengaged from the resisting part 721, the rocker arm 720 returns to the initial position under the action of the first resetting member 730, the push rod 710 is pulled out of the brewing chamber 411 to the maximum extent due to the returning action of the second resetting member 740, and the second pressurizing plate 420 returns to the bottom of the brewing chamber 411 again for the second extraction.

It is understood that in the above embodiment, the slag scraping mechanism 600 is not necessary, and during the slag scraping stage, the bottom of the push rod 710 keeps in contact with the resisting part 721, and the material slag at the top of the brewing chamber 411 can automatically fall off when the brewing device 410 is turned to an intermediate angle, the size of the intermediate angle depends on the length and the arc of the arc-shaped surface on the resisting part 721.

It is further understood that the brewing chamber 411 of the beverage extraction unit 20 shown in the above embodiments is used for containing the powder material, and in other embodiments, the brewing chamber 411 may also be used for containing a beverage capsule, that is, the powder material may be encapsulated in the capsule first, and then the capsule is placed in the brewing chamber 411, the beverage outlet base 300 is provided with a first piercing plate and an elastic ejection member, the bottom of the brewing device 410 is fixed with a second piercing plate, and the structure of the beverage outlet base 300 and the brewing assembly 400 may refer to the existing capsule coffee machine.

In this embodiment, the pushing mechanism 700 includes a push rod 710, a rocker 720, a first reset member 730 and a second reset member 740, the push rod 710 is movably disposed in the brewing device 410, one end of the rocker 720 is a fixed end, the other end is a movable end, a stop portion 721 is extended from the end of the movable end, in an extraction cycle, the stop portion 721 and the push rod 710 alternately move between disengagement and contact, when the stop portion 721 and the push rod 710 are in a contact state, the stop portion 721 can move the push rod 710 upward relative to the brewing device 410, and can limit the push rod 710 from moving downward relative to the brewing device 410, so that in the process of the brewing device 400 being turned to a set angle, the material in the brewing chamber 411 can be separated from the brewing device 410, through the interaction between the stop portion 721 and the push rod 710, without disposing a power mechanism, the structure is simple, and further, in the process of the brewing device 410 being linearly away from the beverage outlet base 300, the stopping part 721 can push the push rod 710 to move in the brewing device 410 at the same time, so that the phenomenon that the push rod 710 is stuck in the brewing device 410 is avoided, and the operation is reliable.

It should be noted that the preferred embodiments of the present invention are described in the specification and the drawings, but the present invention can be realized in many different forms, and is not limited to the embodiments described in the specification, and these embodiments are not provided as additional limitations to the present invention, and are provided for the purpose of making the understanding of the disclosure of the present invention more thorough and complete. Moreover, the above technical features are combined with each other to form various embodiments which are not listed above, and all the embodiments are regarded as the scope of the present invention; further, modifications and variations will occur to those skilled in the art in light of the foregoing description, and it is intended to cover all such modifications and variations as fall within the true spirit and scope of the invention as defined by the appended claims.

Claims (12)

1. A beverage extraction unit (20) for a beverage preparation machine, comprising: a first fixing plate (100), a second fixing plate (200), a beverage outlet seat (300), a brewing assembly (400) and a pushing mechanism (700);

the beverage outlet seat (300) is fixedly arranged between the first fixing plate (100) and the second fixing plate (200), the brewing assembly (400) is movably arranged between the first fixing plate (100) and the second fixing plate (200), the brewing assembly (400) can do linear motion and turnover motion relative to the beverage outlet seat (300), the brewing assembly (400) comprises a brewing device (410), and a brewing cavity (411) for containing materials is arranged in the brewing device (410);

the pushing mechanism (700) comprises a push rod (710), a rocker arm (720), a first reset piece (730) and a second reset piece (740), the push rod (710) is movably arranged in the brewing device (410) in a penetrating mode, one end of the rocker arm (720) is fixed between the first fixing plate (100) and the second fixing plate (200), the other end of the rocker arm (720) is a movable end, the first reset piece (730) is arranged between the movable end and the first fixing plate (100) and the second fixing plate (200), and the second reset piece (740) is arranged between the push rod (710) and the brewing device (410);

wherein, the end of the movable end is extended with a resisting part (721), in an extraction working cycle, the resisting part (721) and the push rod (710) alternately act between disconnection and contact, when the resisting part (721) and the push rod (710) are in a contact state, the resisting part (721) can make the push rod (710) move upwards relative to the brewing device (410) and can limit the push rod (710) to move downwards relative to the brewing device (410), so that the materials in the brewing cavity (411) can be separated from the brewing device (410) in the process that the brewing assembly (400) is turned to a set angle.

2. The beverage extraction unit according to claim 1,

the brewing assembly (400) further comprises a second pressure increasing plate (420), the second pressure increasing plate (420) is accommodated in a cavity of the brewing cavity (411), and the push rod (710) penetrates through the bottom of the brewer (410) to be connected with the second pressure increasing plate (420) so as to drive the second pressure increasing plate (420) to slide up and down between the bottom and a top opening of the brewing cavity (411).

3. The beverage extraction unit according to claim 2,

the beverage outlet seat (300) comprises a fixed seat (310) and a first pressure increasing plate (320), wherein the first pressure increasing plate (320) is in a round cake shape and is fixedly connected to one end, extending towards the brewing assembly (400), of the fixed seat (310);

during the process that the brewer (410) moves towards the beverage outlet seat (300), the first pressure increasing disc (320) can slide into the brewing cavity (411) and is tightly matched with the second pressure increasing disc (420) to compact materials.

4. The beverage extraction unit according to claim 2,

the beverage extraction unit (20) further comprises a slag scraping mechanism (600), the slag scraping mechanism (600) is fixedly installed between the first fixing plate (100) and the second fixing plate (200), and in the process that the brewing assembly (400) is turned to a set angle, the slag scraping mechanism (600) is used for scraping materials on the second pressurizing plate (420).

5. The beverage extraction unit according to claim 4,

the slag scraping mechanism (600) comprises a door-shaped support frame (610), a hopper (620) and a scraper (630);

two stands of door font support frame (610) respectively with first fixed plate (100) with second fixed plate (200) are fixed mutually, funnel (620) slope is installed on the crossbeam of door font support frame (610), scraper (630) are fixed the bottom of funnel (620) and are close to the one end of drink export seat (300).

6. The beverage extraction unit according to claim 5,

the funnel (620) has a funnel opening in the center, which aligns with the top opening of the brewing chamber (411) when the brewing assembly (400) is flipped to a set angle, so that material can be delivered into the brewing chamber (411) through the funnel opening.

7. The beverage extraction unit according to claim 1,

the first reset piece (730) comprises two reset springs, one ends of the two reset springs are respectively connected to two sides of the tail end of the movable end of the rocker arm (720), and the other ends of the two reset springs are respectively fixed on the first fixing plate (100) and the second fixing plate (200);

and/or the second reset piece (740) comprises two spring thrust rods, one ends of the two spring thrust rods are fixed on two opposite sides of the brewer (410), and the other ends of the two spring thrust rods and the bottom of the push rod (710) are kept relatively fixed through a connecting plate.

8. The beverage extraction unit according to any one of claims 1 to 7,

the beverage extraction unit (20) further comprises a transmission assembly (500), the transmission assembly (500) is connected with the brewing assembly (400), guide mechanisms are arranged on the first fixing plate (100) and the second fixing plate (200), and the transmission assembly (500) drives the brewing assembly (400) to make linear motion and turnover motion relative to the beverage outlet seat (300) through the guide mechanisms;

wherein the transmission assembly (500) comprises a crank-link mechanism (510) and a transmission shaft (520) which are fixed with each other, the crank-link mechanism (510) is connected with the brewer (410), the transmission shaft (520) is used for being connected with a driving unit (30), and the transmission shaft (520) and the crank-link mechanism (510) rotate for one circle in one extraction work cycle.

9. The beverage extraction unit according to claim 8,

the guide mechanism comprises a linear chute (110) and a turnover chute (120), the linear chute (110) is arranged in parallel to the longitudinal direction of the first fixing plate (100) and the second fixing plate (200), the turnover chute (120) comprises a first section of guide groove (121) and a second section of guide groove (122) forming a preset angle with the first section of guide groove (121), the first section of guide groove (121) is parallel to the linear chute (110), and the second section of guide groove (122) extends from one end, away from the beverage outlet seat (300), of the first section of guide groove (121) to the back of the linear chute (110);

the brewing device (410) is provided with a main pin shaft (412) and a driven pin shaft (413) on two opposite sides, the crank connecting rod mechanism (510) is connected with the main pin shaft (412), and the main pin shaft (412) and the driven pin shaft (413) are respectively arranged in the linear sliding groove (110) and the overturning sliding groove (120) in a penetrating mode.

10. The beverage extraction unit according to claim 9,

the crank-link mechanism (510) comprises a first crank (511), a second crank (512), a first crank pin (513), a second crank pin (514), a first connecting rod (515) and a second connecting rod (516) which are respectively hinged to two ends of the second crank pin (514), the transmission shaft (520) and the first crank (511) are fixed to each other, and the first crank pin (513) and the second crank pin (514) are respectively arranged in two opposite crank pin holes in the first crank (511) and the second crank (512) in a penetrating manner;

the other ends of the first connecting rod (515) and the second connecting rod (516) are respectively sleeved on the main pin shafts (412) on two sides of the brewing device (410).

11. The beverage extraction unit according to claim 10,

-the first crank pin (513) and the second crank pin (514) are both arranged parallel to the drive shaft (520), the first crank pin (513) extending axially relative to the drive shaft (520), the second crank pin (514) being spaced a radial distance from the first crank pin (513);

the first crank pin (513) is arranged in the beverage outlet base (300) in a penetrating way, and the first crank (511) and the second crank (512) are positioned at two opposite sides of the beverage outlet base (300).

12. A beverage preparation machine (1) comprising a tapping assembly (11), a water inlet connection (12) and, a beverage extraction unit (20) according to any of claims 1-11, said tapping assembly (11) and said water inlet connection (12) being detachably connected to said beverage extraction unit (20), respectively.

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