Full-automatic coffee machine

Abstract

The invention provides a full-automatic coffee machine. The full-automatic coffee machine comprises a powder residue collecting bin; the extraction bin is located in the powder slag collecting bin, and an extraction disc is arranged in the extraction bin; the driving mechanism is positioned above the powder slag collecting bin; the stirring mechanism is connected with the driving mechanism, and the other end of the stirring mechanism extends into the extraction bin and can relatively move up and down; the lifting mechanism is connected with the driving mechanism, and the other end is connected with the extraction disc; the cleaning assembly is arranged on the powder slag collecting bin and used for spraying water into the powder slag collecting bin; when preparation of coffee liquid is completed, the stirring mechanism stops rotating, the other end of the stirring mechanism is moved to the slag outlet of the extraction bin, the lifting mechanism drives the extraction disc to move to the position attached to the other end of the stirring mechanism, at the moment, the stirring mechanism rotates, the extraction disc is cleaned, the cleaning assembly sprays water, and the powder residue collecting bin and the extraction disc are cleaned. According to the full-automatic coffee machine, coffee without residual powder can be efficiently extracted, and meanwhile automatic cleaning of the interior of the machine is achieved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of fully automatic kitchenware, and in particular to a fully automatic coffee machine. Background Art

[0002] Most of the existing fully automatic coffee machines use hydraulic extraction and manual loading to complete the coffee brewing. The same is true for some fully automatic beverage machines, but this method often leads to serious splashing of coffee powder residue and coffee liquid. In addition, when the brewing is finished and the residue needs to be poured out, the method used is to use a scraper to push the residue into a recovery container, which often leads to incomplete pouring of the residue. Due to these conditions, existing fully automatic coffee machines or beverage machines and other equipment generally have problems such as slow liquid discharge efficiency, residual powder residue that affects the taste, inconvenient cleaning of the equipment, and food safety risks. Summary of the invention

[0003] The present invention provides a fully automatic coffee machine which can efficiently extract coffee without residual powder and realize automatic cleaning inside the device.

[0004] In order to solve the above technical problems, an embodiment of the present invention provides a fully automatic coffee machine, comprising:

[0005] Powder slag collection bin;

[0006] An extraction chamber is located in the powder and residue collection chamber, and an extraction plate is provided in the extraction chamber, which can move up and down relative to the extraction chamber to extract coffee liquid and filter out coffee powder and residue. The extraction chamber and the powder and residue collection chamber cooperate to form a chamber for accommodating coffee powder and residue;

[0007] A driving mechanism is located above the powder and slag collecting bin;

[0008] A stirring mechanism, one end of which is connected to the driving mechanism, and the other end of which extends into the extraction chamber and can move up and down relative to the extraction chamber;

[0009] A lifting mechanism, one end of which is connected to the driving mechanism, and the other end of which extends into the extraction chamber and is connected to the extraction plate to drive the extraction plate to move up and down;

[0010] A cleaning component, disposed on the powder residue collection bin, and used for spraying water into the powder residue collection bin;

[0011] When the driving mechanism drives the stirring mechanism to complete the preparation of coffee liquid in the extraction chamber, the stirring mechanism stops rotating and moves its other end to the residue outlet of the extraction chamber, and the lifting mechanism drives the extraction plate supporting the coffee residue to move to the bottom of the other end of the stirring mechanism and abuts against the other end of the stirring mechanism. At this time, the stirring mechanism rotates to sweep the coffee residue on the extraction plate into the chamber, and the cleaning component sprays water to clean the coffee residue in the chamber, while assisting the stirring mechanism to clean the extraction plate.

[0012] In one embodiment, the driving mechanism includes a first driving assembly, the first driving assembly includes a first motor and a stirring gear assembly connected to the first motor, and the stirring mechanism is connected to the same stirring driven wheel in the stirring gear assembly.

[0013] In one embodiment, the stirring mechanism includes at least two stirring rod assemblies, one end of which is connected to the first driving assembly and the other end of which extends into the extraction chamber, the stirring rod assembly includes a stirring rod and a stirring blade, the stirring rod includes a stirring upper slide bar, a stirring lower slide bar and a spring disposed in the stirring lower slide bar and connected to the stirring upper slide bar, the top end of the stirring upper slide bar is connected to the stirring driven wheel, the stirring blade is connected to the bottom end of the stirring lower slide bar, and the stirring lower slide bar can move up and down along the stirring upper slide bar based on the spring;

[0014] The stirring blade always keeps in contact with the extraction plate due to the elasticity of the stirring rod. When the extraction plate moves upward, the stirring blade is pushed to make the stirring rod move and contract. When the extraction plate moves downward, the stirring rod moves and resets due to the elastic force.

[0015] In one embodiment, at least two of the stirring rod assemblies are symmetrically arranged relative to the stirring driven wheel axis, and the two stirring blades corresponding to the radial position are respectively formed by an upper spiral component and a lower spiral component with the same structure and opposite directions.

[0016] In one embodiment, the upper spiral member and the lower spiral member both include a spiral plate and a connecting plate formed by one side of the spiral plate extending axially upward, the width of the spiral plate gradually increases, and the stirring rod is connected to the connecting plate.

[0017] In one embodiment, the first driving assembly is mounted on a first mounting plate, the lifting mechanism includes a lifting rod assembly having one end connected to the driving mechanism and the other end extending into the extraction bin and connected to the extraction disk, the lifting rod assembly includes a screw and a screw sleeve, the screw sleeve is fixed to the first mounting plate, and one end passes through the first mounting plate, the stirring driven wheel is rotatably arranged on one end of the screw sleeve facing the powder and residue collection bin, one end of the screw passes through the screw sleeve and is connected to the extraction disk, and the driving mechanism is connected to the screw to drive the screw to move up and down relative to the screw sleeve.

[0018] In one embodiment, the lifting rod assembly also includes an upper lifting slide rod and a lower lifting slide rod which are sleeved outside the screw rod, one end of the upper lifting slide rod is connected to the second driving assembly, one end of the lower lifting slide rod is connected to the extraction plate, and the other end of the upper lifting slide rod passes through the screw rod sleeve and is sleeved outside the other end of the lower lifting slide rod. When the screw rod moves up and down, it drives the lower lifting slide rod to move along the upper lifting slide rod.

[0019] In one embodiment, the driving mechanism also includes a second driving component, the second driving component includes a second motor and a screw gear component connected to the second motor, the axial position of the screw gear component is fixed, the screw is inserted into a screw driven wheel in the screw gear assembly, and can move up and down relative to the screw driven wheel under the drive of the screw driven wheel, and one end of the lifting upper slide rod is connected to the screw driven wheel.

[0020] In one embodiment, the lifting mechanism also includes a guide rod assembly, which includes a second mounting plate located above the first mounting plate, a guide rod connected to the second mounting plate and passing through the first mounting plate, the screw rod is connected to the second mounting plate, and when the screw rod moves up and down, the guide rod is driven to move up and down relative to the first mounting plate through the second mounting plate.

[0021] In one embodiment, an open end is provided on the top of the powder and residue collecting bin, and the stirring mechanism and the lifting mechanism extend into the extraction bin through the open end; a feed pipe and a water inlet are provided in the area on the top of the powder and residue collecting bin corresponding to the extraction bin; the cleaning component includes a plurality of spherical water nozzles evenly arranged on the top of the powder and residue collecting bin and penetrating the top of the powder and residue collecting bin; a plurality of water spray holes are arranged on the spherical water nozzle; the extraction bin is located below the water spray holes; the extraction disk is arranged in the extraction bin in the form of a piston, and can be moved from the bottom of the extraction bin to the residue outlet located at the top of the extraction bin; the powder and residue collecting bin is also provided with a lead-out portion connected to the chamber for leading out the substance in the annular chamber; and the extraction bin is provided with a coffee liquid lead-out channel connected to the outside.

[0022] Based on the disclosure of the above embodiments, it can be known that the beneficial effects of the embodiments of the present invention include that by setting at least two stirring rod assemblies that can move up and down, when the extraction disk moves up and down, the stirring rod assemblies can be kept in a position close to each other with the extraction disk, which is conducive to the stirring rod assembly to stir and prepare coffee more fully, avoid mixing with unstirred coffee powder blocks, and eliminate the centrifugal swing and splashing of the liquid. Moreover, when the extraction disk is subsequently cleaned, the coffee powder can be swept into the powder residue collection bin more fully, and the coffee powder residue can be eradicated after extraction. The cake, deep cleaning of the extraction disk is achieved to avoid residues. In addition, a cleaning assembly that can spray water is provided, and preferably the cleaning assembly is set to be able to spray water into the powder residue collection bin 360°, which can improve the cleaning efficiency and cleaning degree of the powder residue collection bin, and can also assist the stirring rod assembly to further enhance the cleaning of the extraction disk.

[0023] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings.

[0024] The technical solution of the present application is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The drawings generally illustrate various embodiments by way of example and not limitation, and together with the description and claims, serve to illustrate the disclosed embodiments. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

[0026] Figure 1 Schematic diagram of the structure of a fully automatic coffee machine in an embodiment of the present invention.

[0027] Figure 2 Schematic diagram of the structural decomposition of a fully automatic coffee machine in an embodiment of the present invention.

[0028] Figure 3 4 is a structural cross-sectional view of a fully automatic coffee machine in an embodiment of the present invention.

[0029] Figure 4 2 is a diagram showing the connection structure between the first driving assembly and the stirring rod assembly in an embodiment of the present invention.

[0030] Figure 5Schematic diagram of the structure of a stirring blade in an embodiment of the present invention.

[0031] Figure 6 Schematic diagram of the structure of another stirring blade in an embodiment of the present invention.

[0032] Figure 7 1 is a connection structure diagram of the second driving assembly, the lifting rod assembly and the extraction plate in an embodiment of the present invention.

[0033] Figure 8 Schematic diagram of the connection structure of the powder and slag collection bin and the cleaning component in an embodiment of the present invention.

[0034] Fig. 9 This is a state diagram of the fully automatic coffee machine in the embodiment of the present invention when heating water.

[0035] Fig.10 This is a state diagram of the fully automatic coffee machine when adding coffee powder in an embodiment of the present invention.

[0036] Fig.11 FIG. 4 is a state diagram of the fully automatic coffee machine during stirring in an embodiment of the present invention.

[0037] Fig.12 FIG. 4 is a state diagram of the fully automatic coffee machine in an embodiment of the present invention when extracting coffee liquid.

[0038] Fig.13 This is a state diagram of the fully automatic coffee machine in the embodiment of the present invention when cleaning coffee grounds.

[0039] Fig.14 This is a state diagram of the fully automatic coffee machine during water spray cleaning in an embodiment of the present invention.

[0040] Reference numerals:

[0041] First mounting plate 01, first motor 02, guide rod 03, screw driven wheel 04, screw driving wheel 05, second mounting plate 06, second motor 07, screw nut 08, stirring driven wheel 09, stirring driving wheel 10, screw 11, screw shaft sleeve 12, guide column shaft sleeve 13, spherical water nozzle 14, stirring upper slide bar 15, stirring lower slide bar 16, spring 17, stirring driven wheel bearing 18, lifting upper slide bar 19, lifting lower slide bar 20, hot water pipe joint 21, extraction plate 22, first stirring blade 23, second stirring blade 24, extraction bin 25, powder residue collection bin 26, feeding pipe 27, outlet 28 DETAILED DESCRIPTION

[0042] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings, but are not intended to limit the present invention.

[0043] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the following description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope of the present disclosure will occur to those skilled in the art.

[0044] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0045] These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the accompanying drawings.

[0046] It should also be understood that, although the invention has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the invention that have the characteristics recited in the claims and are therefore within the scope of protection defined thereby.

[0047] The above and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0048] Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant details. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of ways with substantially any suitable detailed structure.

[0049] This specification may use the phrases "in one embodiment," "in another embodiment," "in a further embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present disclosure.

[0050] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0051] like Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the present invention provides a fully automatic coffee machine, comprising:

[0052] Powder and slag collection bin 26;

[0053] The extraction chamber 25 is located in the powder and residue collection chamber 26. The extraction chamber 25 is provided with an extraction plate 22 that can move up and down relative to the extraction chamber 25 to extract coffee liquid and filter out coffee powder and residue. The extraction chamber 25 and the powder and residue collection chamber 26 cooperate to form a chamber for accommodating coffee powder and residue.

[0054] A driving mechanism, located above the powder and slag collecting bin 26;

[0055] A stirring mechanism, one end of which is connected to the driving mechanism, and the other end of which extends into the extraction chamber 25 and can move up and down relative to the extraction chamber 25;

[0056] A lifting mechanism, one end of which is connected to the driving mechanism, and the other end of which extends into the extraction chamber 25 and is connected to the extraction plate 22 to drive the extraction plate 22 to move up and down;

[0057] A cleaning component, disposed on the powder residue collection bin 26, and used for spraying water into the powder residue collection bin 26;

[0058] When the driving mechanism drives the stirring mechanism to complete the preparation of coffee liquid in the extraction chamber 25, the stirring mechanism stops rotating and moves its other end to the residue outlet of the extraction chamber 25, and the lifting mechanism drives the extraction plate 22 supporting the coffee residue to move to the bottom of the other end of the stirring mechanism and abuts against the other end of the stirring mechanism. At this time, the stirring mechanism rotates to sweep the coffee residue on the extraction plate 22 into the chamber, and the cleaning component sprays water to clean the coffee residue in the chamber, while assisting the stirring mechanism to clean the extraction plate 22.

[0059] The fully automatic coffee machine in this embodiment also includes a body and a control device. The above-mentioned various mechanisms and components are all arranged in the body of the coffee machine. The control device is used to realize the operation control of the stirring mechanism, the lifting mechanism, and the cleaning component. The coffee machine may also include other functional components, such as a water tank component, a heating component, a refrigeration component, etc. The specific ones are not unique and can be flexibly configured according to actual needs.

[0060] Furthermore, the driving mechanism in this embodiment includes a first driving assembly for driving the stirring mechanism to rotate and a second driving assembly for driving the lifting mechanism to move up and down. The stirring mechanism includes at least two stirring rod assemblies, one end of which is connected to the first driving assembly and the other end of which extends into the extraction chamber 25 and is close to the extraction disk 22. The stirring rod assembly can move up and down together with the extraction disk 22 so that the other end of the stirring rod assembly is always kept in a position close to the extraction disk 22. The lifting mechanism includes a lifting rod assembly, one end of which is connected to the second driving assembly and the other end of which extends into the extraction chamber 25 and is connected to the extraction disk 22. There is a gap between the lifting rod assembly and the stirring rod assembly to allow the stirring rod assembly to rotate. When the second driving assembly drives the lifting rod assembly to move up and down, it can drive the extraction disk 22 supporting the coffee powder and the other end of the stirring rod assembly to move to the residue outlet at the top of the extraction chamber 25.

[0061] For example, in this embodiment, the extraction disk 22 is placed at the bottom of the extraction chamber 25 by default, and the stirring rod assembly in the stirring mechanism is a variable length structure, which is usually at the first length position by default, and is used to be close to the extraction disk 22 at the bottom of the extraction chamber 25. When preparing coffee, after the coffee powder and brewing water are placed in the extraction chamber 25, the stirring mechanism will operate to prepare coffee. When the coffee is prepared, the driving mechanism stops driving the stirring mechanism, and drives the lifting mechanism to operate at the same time, so that the second lifting rod assembly moves upward, so as to drive the extraction disk 22 to move upward along the inner wall of the extraction chamber 25, so that the coffee liquid remains at the bottom of the extraction chamber 25, and the coffee powder residue is left on the extraction disk 22, and moves to the residue outlet at the top of the extraction chamber 25 with the extraction disk 22. At this time, the lifting mechanism stops operating, and the stirring rod assembly is at the second length position, and is always close to the extraction disk 22. The driving mechanism drives the stirring rod assembly to rotate to sweep the coffee powder residue into the chamber surrounded by the powder residue collection chamber 26 and the extraction chamber 25. At the same time, the cleaning component controls the water spraying so that the water can be sprayed in a large range, for example, 360° without dead angles in various areas in the powder and residue collection bin 26, including the extraction disc 22, the outer wall of the extraction bin 25, the inner wall of the powder and residue collection bin 26, etc., so as to clean the extraction disc 22 and the powder and residue collection bin 26. During the cleaning process, the coffee liquid in the extraction bin 25 will be discharged synchronously, or before the cleaning process is executed, such as when the extraction disc 22 moves to the top of the extraction bin 25, the coffee liquid is discharged. When the cleaning is completed, the stirring mechanism stops running, and the lifting mechanism starts running, so that the lifting rod assembly moves downward, thereby driving the extraction disc 22 back to the initial position, that is, the bottom of the extraction bin 25. At this time, the length of the stirring rod assembly is also restored to the original state to prepare for the next brewing of coffee liquid.

[0062] Based on the above content, it can be known that in this embodiment, by providing at least two stirring rod assemblies that can move up and down, when the extraction disk 22 moves up and down, the stirring rod assemblies can be kept in a position close to each other with the extraction disk 22, which is conducive to the stirring rod assembly to stir and prepare coffee more fully, avoid mixing with unstirred coffee powder blocks, and eliminate the centrifugal swing and splashing of the liquid. Moreover, when the subsequent multiplexing stirring mechanism is used to clean the extraction disk 22, the coffee powder can be swept more fully into the powder residue collection bin 26, and the coffee powder residue can be eradicated after extraction. The cake, deep cleaning of the extraction disk 22 is achieved to avoid residues. In addition, under the premise of multiplexing the stirring mechanism, a cleaning assembly capable of spraying water is added, and the cleaning assembly is preferably set to be able to spray water into the powder residue collection bin 26 at 360 degrees, which can significantly improve the cleaning efficiency and cleaning degree of the powder residue collection bin 26, and can also assist the stirring rod assembly to further enhance the cleaning of the extraction disk 22 and rinse off the stubborn residue on the extraction disk 22.

[0063] Combination Figure 2 and Figure 4 As shown, the first driving assembly includes a first motor 02 and a stirring gear assembly connected to the first motor 02, and one end of at least two stirring rod assemblies are connected to the same stirring driven wheel 09 in the stirring gear assembly.

[0064] There are two stirring rod assemblies in the present embodiment, and of course there can be more, for example, four or other even numbers are set, and there is no limit to the specific number. The present embodiment only takes two stirring rod assemblies as an example for illustration. The stirring gear assembly includes a stirring driving wheel 10 and a stirring driven wheel 09. The number of the stirring driven wheel 09 is not limited. In the present embodiment, one stirring driven wheel 09 is used as an example for illustration. The stirring driven wheel 09 is a large gear, and the stirring driving wheel 10 is a small gear. The two mesh to form a transmission gear to transmit the driving force output by the first motor 02 to the stirring rod assembly. When applied, the stirring effect can be adjusted by adjusting the modulus ratio and output torque of the large and small gears. The two stirring rod assemblies are connected to the stirring driven wheel 09 at the same time, that is, the single rotating disk drives the double stirring rod assembly to rotate, and the stirring operation is implemented. This can increase the rotation consistency and avoid splashing of the liquid due to uneven force.

[0065] Continue to combine Figure 4As shown, the stirring rod assembly includes a stirring rod and a stirring blade, the stirring rod includes a stirring upper slide bar 15, a stirring lower slide bar 16, and a spring 17 disposed in the stirring lower slide bar 16 and connected to the stirring upper slide bar 15, the top end of the stirring upper slide bar 15 is connected to the stirring driven wheel 09, the stirring blade is connected to the bottom end of the stirring lower slide bar 16, and the stirring lower slide bar 16 can move up and down along the stirring upper slide bar 15 based on the spring 17. That is, the stirring rod is divided into two upper and lower parts that are mutually sleeved, and the spring 17 is built in, so that the two parts of the stirring rod can move relative to each other under the action of external force, resulting in telescopic phenomenon, so that the length of the stirring rod can be dynamically adjusted. It is ensured that the stirring rod can be extended and retracted in coordination with the movement of the extraction plate 22, so that the stirring blade is always close to the extraction plate 22, which not only ensures sufficient stirring, but also can effectively clean the extraction plate 22 when removing the residue, and eliminates the hidden danger that the residue is difficult to completely remove after extraction. That is, the extension and retraction ability of the stirring rod can not only fully stir the coffee liquid at the bottom of the extraction chamber 25 to prepare coffee with a good taste and no residue, but also remove the coffee residue on the extraction plate 22 and clean the plate surface. In addition, in the process of the extraction plate 22 rising and falling, the rod body of the stirring rod can be extended and retracted together with the extraction plate 22, so that too much installation space is not occupied, and the coffee machine as a whole can be more slim and compact.

[0066] Furthermore, the two stirring rod assemblies are symmetrically arranged relative to the stirring driven wheel 09. When there are more stirring rod assemblies, they still need to be symmetrically arranged relative to the stirring driven wheel 09 to ensure that when stirring the coffee liquid, the internal force of the liquid is balanced and no centrifugal splashing occurs. In order to further improve the ability to prevent splashing, in this embodiment, the two stirring blades corresponding to the radial position of the stirring driven wheel 09, namely the first stirring blade 23 and the second stirring blade 24, are respectively formed by upper and lower spirals with the same structure and opposite directions. That is, the two stirring blades corresponding to this position have the same structure, but only the spiral directions are opposite, so that the coffee liquid can only roll internally without centrifugal vortex and splashing.

[0067] like Figure 5 and Figure 6 As shown, the upper spiral member and the lower spiral member both include a spiral plate and a connecting plate formed by extending one side of the spiral plate axially upward, the width of the spiral plate gradually increases, and the stirring rod is connected to the connecting plate. The connecting plate runs through both ends of the spiral plate, that is, the two plates have the same length, and the stirring rod is preferably connected to the connecting plate near the end with the smallest width of the spiral plate to increase the stirring radius.

[0068] Continue to combine Figure 1 , Figure 4 and Figure 7As shown, a first mounting plate 01 is fixedly provided in the coffee machine, the first driving assembly is mounted on the first mounting plate 01, the lifting rod assembly includes a screw 11 and a screw sleeve 12, the screw sleeve 12 is fixed on the first mounting plate 01, and one end thereof passes through the first mounting plate 01, the stirring driven wheel 09 is rotatably provided on one end of the screw sleeve 12 facing the powder and residue collection bin 26 through the stirring driven wheel bearing 1818, that is, on one end passing through the first mounting plate 01. One end of the screw 11 passes through the screw sleeve 12 and is connected to the extraction plate 22, and the second driving assembly is connected to the screw 11 to drive the screw 11 to move up and down relative to the screw sleeve 12.

[0069] Specifically, the lifting rod assembly also includes an upper lifting slide rod 19 and a lower lifting slide rod 20 which are sleeved outside the screw rod 11. One end of the upper lifting slide rod 19 is connected to the second drive assembly. Since the second drive assembly is fixed in the vertical direction, that is, it will not move up and down, the upper lifting slide rod 19 is also fixed in the vertical direction after being connected to the second drive assembly, and will not move up and down. One end of the lower lifting slide rod 20 is connected to the extraction plate 22 together with the corresponding end of the screw rod 11. The other end of the upper lifting slide rod 19 passes through the screw rod shaft sleeve 12 and is sleeved outside the other end of the lower lifting slide rod 20. That is, the upper lifting slide rod 19 and the lower lifting slide rod 20 are in a sleeve connection relationship, and the two are combined to form a sleeve. When the screw rod 11 moves up and down, it drives the lower lifting slide rod 20 to move along the upper lifting slide rod 19, that is, the lower lifting slide rod 20 performs telescopic movement relative to the upper lifting slide rod 19. In this embodiment, the arrangement of the lifting upper slide bar 19 and the lifting lower slide bar 20 can ensure that the oil and other impurities generated by the screw rod 11 during movement do not contaminate the coffee liquid, causing food safety problems, and can also prevent the coffee liquid from corroding the screw rod 11, thereby enhancing the service life of the mechanism. At the same time, the sleeve-type design can ensure that the screw rod 11 moves within the specified stroke, thereby improving the safety of the equipment. In addition, the overall structural design of the lifting upper slide bar 19 and the lifting lower slide bar 20 is simple, the screw rod 11 moves coaxially with the slide bar, and since the screw rod 11 and the lifting lower slide bar 20 are simultaneously connected to the extraction plate 22, there is no need for an avoidance design at the rear end of the screw rod 11, thereby saving space, and the overall structure can simultaneously drive the screw rod 11 to move up and down and the slide bar to telescopically move through only one driving component.

[0070] Continue to combine Figure 7As shown, the second drive assembly includes a second motor 07 and a screw gear assembly connected to the second motor 07, and the screw gear assembly is fixed in axial position, that is, the second drive assembly as described above is fixed in vertical position as a whole. The screw gear assembly includes a screw driving wheel 05 and a screw driven wheel 04, the screw driving wheel 05 is connected to the second motor 07, and the screw driven wheel 04 is meshed with the screw driving wheel 05. The number of the screw driven wheel 04 is not unique, and this embodiment is described by setting one screw driven wheel 04 as an example. The screw 11 is inserted into the screw driven wheel 04, and can move up and down relative to the screw driven wheel 04 under the drive of the screw driven wheel 04. Specifically, the screw 11 is provided with a screw nut 08, and the screw driven wheel 04 is connected to the screw nut 08, so as to drive the screw 11 to move up and down by driving the screw nut 08 to rotate. One end of the lifting upper slide 19 is connected to the screw driven wheel 04.

[0071] When the lifting mechanism is running, the second motor 07 drives the screw driving wheel 05 to rotate, which in turn drives the screw driven gear meshing with the driving gear to rotate, and the screw nut 08 rotates synchronously with the screw driven gear. If the second motor 07 rotates forward, the screw nut 08 rotates to drive the screw 11 to move upward. If the second motor 07 rotates reversely, the screw nut 08 drives the screw 11 to move downward.

[0072] In one embodiment, the lifting mechanism further includes a guide rod assembly, which includes a second mounting plate 06 located above the first mounting plate 01, and a guide rod 03 connected to the second mounting plate 06 and penetrating the first mounting plate 01. In this embodiment, the guide rod 03 is vertically arranged, consistent with the preset moving track direction of the screw rod 11. The first mounting plate 01 is horizontally arranged, perpendicular to the guide rod 03, and a guide rod sleeve 13 is pierced thereon. The guide rod 03 penetrates the first mounting plate 01 through the guide rod sleeve 13 and can move up and down relative to the first mounting plate 01. The upper end of the screw rod 11 is connected to the second mounting plate 06. When the screw rod 11 moves up and down, the guide rod 03 is driven to move synchronously through the second mounting plate 06. The guide rod 03 is restricted by the first mounting plate 01 by moving relative to the first mounting plate 01, so that the guide rod 03 always moves vertically, thereby achieving the effect of guiding the vertical movement of the screw rod 11 and enhancing the movement stability.

[0073] Combination Figure 8As shown, in this embodiment, the powder residue collection bin 26 is provided with an open end at the top, and the stirring rod assembly and the lifting rod assembly extend into the extraction bin 25 through the open end. A feed pipe 27 and a water inlet are provided at the top of the powder residue collection bin 26 corresponding to the extraction bin 25, and a hot water pipe joint is provided at the water inlet. The cleaning assembly includes a plurality of spherical water spray nozzles 14 evenly arranged on the top of the powder residue collection bin 26 and penetrating the top of the powder residue collection bin 26. The spherical water spray nozzles 14 are provided with a plurality of water spray holes, which can wash various areas in the powder residue collection bin 26 360° without dead angles. The extraction bin 25 is located below the water spray hole, and cooperates with the powder residue collection bin 26 to form an annular chamber, which can of course also be a chamber of other shapes, which is not specific. Since water will automatically form a water column with a certain pressure when it is sprayed out through the spherical water nozzle 14, it can not only spray far and powerfully, but also can achieve a large range of cleaning, and the cleaning force is strong, and can completely rinse away the coffee powder residues remaining in the powder residue collection bin 26. At the same time, with the rotation of the stirring rod assembly, the powder residues on the extraction plate 22 can be more effectively removed.

[0074] In the present embodiment, when the automatic cleaning process is implemented, the stirring mechanism is a multiplexed stirring mechanism. When the lifting mechanism drives the extraction plate 22 to move to the top of the extraction chamber 25, the stirring rod assembly is controlled to rotate. Since the stirring blade can always be close to the surface of the extraction plate 22 by the elastic force of the spring 17 in the stirring rod, when the spiral stirring blade rotates, the coffee powder on the extraction plate 22 can be shoveled from the bottom without leaving any residue, and then the coffee powder is sent to the powder collection chamber 26 by the centrifugal force generated by the rotation. In addition, with the help of the water column sprayed by the spherical water nozzle 14, the extraction plate 22 can be washed by the water column while the stirring blade rotates to scrape its surface, thereby more effectively ensuring the cleaning effect of the extraction plate 22, so that there is no coffee powder residue left, and when coffee is brewed later, the coffee taste will not be affected by the falling residue.

[0075] Furthermore, in this embodiment, the extraction disc 22 is used to filter coffee powder in the coffee liquid. It is disposed in the extraction chamber 25 in the form of a piston and can move from the bottom of the extraction chamber 25 to the top of the extraction chamber 25. The powder and residue collection chamber 26 is also provided with a lead-out portion 28 connected to the chamber, which is used to lead out the substances in the chamber, such as a mixture of water and coffee powder. The extraction chamber 25 is provided with a coffee liquid lead-out channel that passes through the powder and residue collection chamber 26 and is connected to the outside, which is used to lead out the brewed coffee liquid.

[0076] like Figures 9 to 14As shown, in actual application, hot water is introduced into the hot water pipe joint 21 through a pipeline and then enters the extraction chamber 25; coffee powder is transported to the extraction chamber 25 through the feeding pipe 27; the stirring mechanism is controlled to rotate so that the hot water and the coffee powder are fully mixed; the stirring mechanism is controlled to stop rotating, and the lifting mechanism is controlled to operate to lift the extraction plate 22 in the extraction chamber 25, so that the area below the extraction plate 22 in the extraction chamber 25 forms a vacuum state, and at the same time, the coffee liquid is pressed into the vacuum area of ​​the extraction chamber 25 from the small holes of the extraction plate 22 due to the negative pressure of the atmosphere until the extraction of the coffee liquid is completed. , filtering of coffee powder; when the extraction plate 22 is raised to the top of the extraction chamber 25, the stirring mechanism is controlled to start rotating to sweep the coffee powder on the extraction plate 22 into the powder collection chamber 26; the spherical water nozzle 14 connected to a water pipe on the top of the powder collection chamber 26 is controlled to start spraying water to clean the powder remaining in the chamber, and at the same time assist the stirring mechanism to rotate and clean the extraction plate 22; after cleaning, the spherical water nozzle 14 is controlled to stop spraying water, the stirring mechanism stops running, and the lifting mechanism is started to drive the extraction plate 22 to return to its original position, and the stirring mechanism is automatically reset under the elastic force of the spring 17.

[0077] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A fully automatic coffee machine, characterized in that: include: Powder slag collection bin; An extraction chamber is located in the powder and residue collection chamber, and an extraction plate is provided in the extraction chamber, which can move up and down relative to the extraction chamber to extract coffee liquid and filter out coffee powder and residue. The extraction chamber and the powder and residue collection chamber cooperate to form a chamber for accommodating coffee powder and residue; A driving mechanism is located above the powder and slag collecting bin; A stirring mechanism, one end of which is connected to the driving mechanism, and the other end of which extends into the extraction chamber and can move up and down relative to the extraction chamber; A lifting mechanism, one end of which is connected to the driving mechanism, and the other end of which extends into the extraction chamber and is connected to the extraction plate to drive the extraction plate to move up and down; A cleaning component, disposed on the powder residue collection bin, and used for spraying water into the powder residue collection bin; When the driving mechanism drives the stirring mechanism to complete the preparation of coffee liquid in the extraction chamber, the stirring mechanism stops rotating and moves its other end to the residue outlet of the extraction chamber, and the lifting mechanism drives the extraction plate supporting the coffee residue to move to the bottom of the other end of the stirring mechanism and abuts against the other end of the stirring mechanism. At this time, the stirring mechanism rotates to sweep the coffee residue on the extraction plate into the chamber, and the cleaning component sprays water to clean the coffee residue in the chamber, while assisting the stirring mechanism to clean the extraction plate.

2. The fully automatic coffee machine according to claim 1, characterized in that: The driving mechanism comprises a first driving assembly, wherein the first driving assembly comprises a first motor and a stirring gear assembly connected to the first motor, and the stirring mechanism is connected to the same stirring driven wheel in the stirring gear assembly.

3. The fully automatic coffee machine according to claim 2, characterized in that: The stirring mechanism comprises at least two stirring rod assemblies with one end connected to the first driving assembly and the other end extending into the extraction chamber, the stirring rod assembly comprising a stirring rod and a stirring blade, the stirring rod comprising a stirring upper sliding rod, a stirring lower sliding rod and a spring disposed in the stirring lower sliding rod and connected to the stirring upper sliding rod, the top end of the stirring upper sliding rod is connected to the stirring driven wheel, the stirring blade is connected to the bottom end of the stirring lower sliding rod, and the stirring lower sliding rod can move up and down along the stirring upper sliding rod based on the spring; The stirring blade always keeps in contact with the extraction plate due to the elasticity of the stirring rod. When the extraction plate moves upward, the stirring blade is pushed to make the stirring rod move and contract. When the extraction plate moves downward, the stirring rod moves and resets due to the elastic force.

4. The fully automatic coffee machine according to claim 3, characterized in that: At least two stirring rod assemblies are symmetrically arranged relative to the stirring driven wheel axis, and the two stirring blades corresponding to each other in radial position are respectively formed by an upper spiral component and a lower spiral component with the same structure and opposite directions.

5. The fully automatic coffee machine according to claim 4, characterized in that: The upper spiral component and the lower spiral component both include a spiral plate and a connecting plate formed by extending one side of the spiral plate axially upward. The width of the spiral plate gradually increases, and the stirring rod is connected to the connecting plate.

6. The fully automatic coffee machine according to claim 3, characterized in that: The first driving assembly is mounted on the first mounting plate, the lifting mechanism includes a lifting rod assembly having one end connected to the driving mechanism and the other end extending into the extraction bin and connected to the extraction disk, the lifting rod assembly includes a screw and a screw sleeve, the screw sleeve is fixed to the first mounting plate, and one end passes through the first mounting plate, the stirring driven wheel is rotatably arranged on one end of the screw sleeve facing the powder and residue collection bin, one end of the screw passes through the screw sleeve and is connected to the extraction disk, the driving mechanism is connected to the screw to drive the screw to move up and down relative to the screw sleeve.

7. The fully automatic coffee machine according to claim 6, characterized in that: The lifting rod assembly also includes an upper lifting slide rod and a lower lifting slide rod which are sleeved outside the screw rod. One end of the upper lifting slide rod is connected to the second driving assembly, and one end of the lower lifting slide rod is connected to the extraction plate. The other end of the upper lifting slide rod passes through the screw rod sleeve and is sleeved outside the other end of the lower lifting slide rod. When the screw rod moves up and down, it drives the lower lifting slide rod to move along the upper lifting slide rod.

8. The fully automatic coffee machine according to claim 7, characterized in that: The driving mechanism also includes a second driving assembly, which includes a second motor and a screw gear assembly connected to the second motor. The axial position of the screw gear assembly is fixed. The screw is inserted into a screw driven wheel in the screw gear assembly and can move up and down relative to the screw driven wheel under the drive of the screw driven wheel. One end of the lifting upper sliding rod is connected to the screw driven wheel.

9. The fully automatic coffee machine according to claim 8, characterized in that: The lifting mechanism also includes a guide rod assembly, which includes a second mounting plate located above the first mounting plate, a guide rod connected to the second mounting plate and penetrating the first mounting plate, and the screw rod is connected to the second mounting plate. When the screw rod moves up and down, the guide rod is driven to move up and down relative to the first mounting plate through the second mounting plate.

10. The fully automatic coffee machine according to claim 1, characterized in that: An open end is provided on the top of the powder and residue collecting bin, and the stirring mechanism and the lifting mechanism extend into the extraction bin through the open end. A feed pipe and a water inlet are provided in the area on the top of the powder and residue collecting bin corresponding to the extraction bin. The cleaning component includes a plurality of spherical water nozzles evenly arranged on the top of the powder and residue collecting bin and penetrating the top of the powder and residue collecting bin, and a plurality of water spray holes are arranged on the spherical water nozzle. The extraction bin is located below the water spray holes. The extraction disk is arranged in the extraction bin in the form of a piston and can be moved from the bottom of the extraction bin to the residue outlet located at the top of the extraction bin. The powder and residue collecting bin is also provided with a lead-out portion connected to the chamber for leading out the substance in the annular chamber, and the extraction bin is provided with a coffee liquid lead-out channel connected to the outside.

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