Coffee brewing system and coffee machine

Abstract

The invention provides a coffee brewing system and a coffee machine. A brewing head assembly of the coffee brewing system is provided with a water supply channel; the brewing device assembly comprises a brewing device body, a push rod assembly and a filter screen, the top of the push rod assembly extends into the brewing device body from the bottom of the brewing device body, the push rod assembly is provided with a coffee liquid confluence cavity, an opening is formed in the top of the coffee liquid confluence cavity, and a coffee liquid outlet is formed in the bottom of the coffee liquid confluence cavity; the filter screen is arranged at the opening; when coffee is brewed, the brewing device assembly horizontally moves to the position below the brewing head assembly from the powder receiving position and then upwards moves till the brewing head assembly extends into the brewing device body, and the brewing head assembly sprays water used for brewing coffee to coffee powder on the filter screen. Coffee made in a brewing mode that water enters from top to bottom also enters the coffee liquid confluence chamber to be mixed and then is discharged from the coffee liquid outlet, and the problems that coffee powder is excessively extracted and brewing is not uniform are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coffee machines, in particular to a coffee brewing system and a coffee machine. BACKGROUND

[0002] Currently, some coffee brewing systems have the problem of uneven brewing and over-extraction of the center of the powder cake. For example, CN106859344B discloses a coffee brewing device, and the coffee making process is as follows: after the brewing chamber is vertically filled with coffee powder, the brewing chamber is tilted at a certain angle, the brewing device is tilted to press the coffee powder to brew, and the tilting angle of the brewing chamber causes the coffee powder to tilt, which causes uneven distribution of the coffee powder and forms a channel effect when the coffee powder is pressed. Tilting brewing also causes uneven water flow and over-extraction of the center of the powder cake, and the periphery of the powder cake is under-extracted (the periphery of the powder cake is dry), which affects the coffee effect. SUMMARY

[0003] The purpose of the embodiments of the present application is to provide a coffee brewing system and a coffee machine.

[0004] The embodiments of the present application adopt the following technical solutions: a coffee brewing system applied to a coffee machine, comprising: a brewing head assembly having a water supply channel; a brewer assembly comprising a brewer body, a push rod assembly, and a filter screen, the top of the push rod assembly extending into the brewer body from the bottom of the brewer body, the push rod assembly having a coffee liquid convergence chamber, the top of the coffee liquid convergence chamber having an open mouth, and the bottom of the coffee liquid convergence chamber having a coffee liquid outlet; and the filter screen being arranged at the open mouth. During the brewing process, the top opening of the brewer body remains in an upward state.

[0005] The brewing method of water entering from top to bottom is combined with the prepared coffee, which enters the coffee liquid convergence chamber for mixing and then is discharged from the coffee liquid outlet, thereby solving the problems of over-extraction of coffee powder and uneven brewing. In addition, the coffee liquid can be mixed in the coffee liquid convergence chamber, which makes the coffee liquid more uniform.

[0006] In some embodiments, the inner diameter of the top of the coffee liquid convergence chamber is greater than the inner diameter of the bottom.

[0007] In some embodiments, the push rod assembly is provided with a coffee liquid discharge channel, one end of the discharge channel is in communication with the coffee liquid outlet, and the other end of the discharge channel is connected with one end of a liquid outlet pipe, and the other end of the liquid outlet pipe discharges coffee liquid. The coffee liquid discharge channel is directly integrated on the push rod assembly, so that the push rod assembly can integrate multiple functions, and the structure of the brewing system is reduced.

[0008] In some embodiments, the bottom of the water supply channel is provided with a spray head, which sprays water uniformly to the coffee powder, improving the uniformity of the coffee powder cake brewing.

[0009] In some embodiments, the water supply system includes a water tank, a water pump, and a heating assembly, the water pump is connected with the water tank, and the water pump delivers water in the water tank to the heating assembly for heating, and the heating assembly is in communication with one end of the water supply channel. The water supply system can provide hot water for making hot coffee, and can also be in communication with the top of the water supply channel, so that hot water can brew the coffee powder cake from top to bottom.

[0010] In some embodiments, the coffee machine is provided with horizontal moving tracks and vertical moving tracks on the frame, and the brewer assembly can move along the horizontal moving tracks and the vertical moving tracks under the drive of the drive assembly. The brewer body does not need to be inclined at a certain angle after powdering, and then the powdering and brewing are carried out, so that the coffee powder is more uniformly arranged in the brewer, and then the uniformity of the powdering and brewing process of the coffee powder is ensured.

[0011] In some embodiments, the frame of the coffee machine is further provided with a limiting mechanism, which is used to limit the action of the push rod assembly after coffee brewing is completed, so that the brewer body moves downward relative to the push rod assembly, the push rod assembly pushes out the coffee powder residue in the brewer body, and the automatic discharge of the coffee powder residue is realized.

[0012] In some embodiments, the filter screen is detachably installed at the opening, so as to clean the filter screen and the coffee liquid confluence chamber.

[0013] In some embodiments, the coffee liquid confluence chamber is funnel-shaped, or the coffee liquid outlet is eccentrically arranged at the bottom of the coffee liquid confluence chamber, so that the coffee liquid can flow along the inner wall of the coffee liquid confluence chamber to the coffee liquid outlet for mixing and then smoothly flow out.

[0014] The application also provides a coffee machine, which comprises a frame, and the coffee machine further comprises the coffee brewing system as described in any one of the above embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the technical solutions in the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the related art description. Obviously, the drawings in the following description only show some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort under the premise of the drawings.

[0016] Figure 1 It is a structural schematic diagram of the coffee brewing system of the present application.

[0017] Figure 2 It is a longitudinal sectional view of the coffee brewing system of the present application.

[0018] Figure 3 It is a structural schematic diagram of the coffee brewing system of the present application from another angle.

[0019] Figure 4 It is a structural schematic diagram of the coffee brewing system of the present application when powder is added.

[0020] Figure 5 It is a structural schematic diagram of the coffee brewing system of the present application when brewing coffee.

[0021] Figure 6 It is a structural schematic diagram of the brewer assembly of the present application.

[0022] Figure 7 It is a longitudinal sectional view of the brewer assembly of the present application.

[0023] Figure 8 It is a longitudinal sectional view of another embodiment of the brewer assembly of the present application.

[0024] Reference signs: 1, frame; 2, driving member; 3, transmission mechanism; 4, brew head assembly; 41, brew head body; 42, water inlet connector; 43, pressure head; 5, brewer assembly; 51, brewer body; 52, filter screen; 53, push rod body; 531, coffee liquid collecting chamber; 532, coffee liquid discharge channel; 5321, liquid outlet connector; 6, water supply system; 61, water tank; 62, water pump; 63, heating pot; 7, limiting block. DETAILED DESCRIPTION

[0025] The various schemes and features of the present application are described herein with reference to the accompanying drawings.

[0026] It should be understood that various modifications can be made to the embodiments of the present application. Therefore, the above description should not be regarded as limiting, but only as an example of the embodiments. Those skilled in the art will think of other modifications within the scope and spirit of the present application.

[0027] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0028] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0029] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application.

[0030] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0031] Specific embodiments of this application are described thereafter with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that could obscure the application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in a variety of substantially any suitable detailed structures.

[0032] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0033] This application provides a coffee brewing system for use in coffee machines. Unlike existing coffee machine brewing systems in the prior art, this coffee brewing system allows water to enter from above the push rod assembly inside the brewer body 51. The brewed coffee liquid automatically enters the coffee liquid collection chamber 531 in the push rod assembly under the action of gravity, allowing the coffee liquid to be fully mixed in the coffee collection chamber in the push rod assembly, so that the coffee puck is brewed evenly without over-extraction. The coffee liquid then flows evenly from the push rod assembly into the user's coffee cup, completing the brewing process.

[0034] Combination Figure 1 , Figure 2 and Figure 3The coffee brewing system may include a brewing head assembly 4 and a brewer assembly 5. The brewing head assembly 4 and the brewer assembly 5 may be respectively mounted on the frame 1 of the coffee machine. The brewer assembly 5 can move under the drive of the drive assembly. For example, the brewer assembly 5 first collects coffee grounds at the powder receiving position, then moves to below the brewing head assembly 4 (during this process, the brewer assembly 5 will not tilt, thus preventing uneven distribution of coffee grounds within it), and then moves upwards to the brewing head assembly 4 to brew the coffee. After brewing, the coffee grounds in the brewer assembly 5 can be cleaned out, and the brewer assembly 5 can then be reset.

[0035] The brewing head assembly 4 of this application has a water supply channel, through which water for brewing coffee can enter the water supply channel of the brewing head assembly 4 and then be sprayed downwards onto the coffee powder cake inside the brewer assembly 5.

[0036] The brewing head assembly 4 may include a brewing head body 41, and a pressing head 43 for pressing powder may be provided at the bottom of the brewing head body 41. The pressing head 43 may be provided with corresponding pressing powder patterns, etc.

[0037] Combination Figure 6 and Figure 7 The brewer assembly 5 may include a brewer body 51, a push rod assembly, and a filter 52. The brewer body 51 is cup-shaped with an open top, allowing coffee grounds to be added from the top. For example, at the powder receiving position, freshly ground coffee can fall into the brewer body 51 along the powder channel. The brewing head assembly 4 delivers water for brewing coffee into the brewer body 51, and the brewing process is completed within the brewer body 51.

[0038] The upper and lower inner diameters of the brewer body 51 are the same, so that the push rod assembly can move up and down along the brewer body 51.

[0039] The top of the pusher assembly extends from the bottom of the brewer body 51 into the interior of the brewer body 51, while the bottom of the pusher assembly extends downwards. The pusher assembly may include a pusher body 53, with a larger top portion adapted to fit the brewer body 51. The pusher assembly may also include a sealing ring, which can be provided on the pusher body 53 to achieve a seal between the pusher assembly and the brewer body 51, preventing coffee leakage. Additionally, a sealing ring can also be provided on the brewing head body 41 to achieve a seal between the brewing head body 41 and the brewer body 51, preventing moisture leakage between the brewing head body 41 and the brewer body 51 during coffee brewing.

[0040] The pusher assembly can be used to push coffee grounds out of the brewer body 51 after brewing, and a scraper or similar mechanism can push the coffee grounds into a recycling device. Additionally, in this application, the pusher assembly also has a coffee liquid collection chamber 531, which is directly formed on the pusher assembly. This chamber collects the brewed coffee liquid, allowing for simultaneous brewing and outflow of coffee liquid, preventing over-extraction of the coffee grounds. During coffee making, the brewed coffee liquid continuously flows into the coffee liquid collection chamber 531. The top of the coffee liquid collection chamber 531 has an opening, and a filter 52 is located at the opening, supporting the coffee grounds that fall into the brewer body 51. During coffee brewing, the brewed coffee liquid passes through the filter 52 under gravity and enters the coffee liquid collection chamber 531. This allows the coffee liquid to be fully mixed within the coffee collection chamber space of the pusher assembly, ensuring even brewing of the coffee puck and preventing over-extraction of the coffee grounds in the brewing cup. The bottom of the coffee liquid collection chamber 531 also has a coffee liquid outlet through which the coffee liquid is discharged.

[0041] During the coffee brewing process, the top opening of the brewer body 51 remains upward. For example, combined with Figure 4 and Figure 5 The brewer assembly 5 can move horizontally from the powder receiving position to below the brewing head assembly 4, and then upward until the brewing head assembly 4 extends into the brewer body 51. During this process, the brewer assembly 5 keeps the brewer body 51 from tilting, and its top opening always faces upward. The coffee powder falling into the brewer body 51 will not be tilted due to the tilt of the brewer body 51, thus preparing for even brewing of the coffee. After the brewing head assembly 4 extends into the brewer body 51, it can squeeze the coffee powder and spray water for brewing coffee from top to bottom onto the coffee powder on the filter screen 52, thus brewing the coffee.

[0042] The brewing method of water entering from top to bottom in this embodiment, along with the prepared coffee entering the coffee liquid manifold chamber 531 for mixing before being discharged from the coffee liquid outlet, solves the problems of over-extraction of coffee powder and uneven brewing; in addition, the coffee liquid can be mixed in the coffee liquid manifold chamber 531, which also makes the coffee liquid more uniform.

[0043] In some embodiments, the inner diameter of the top of the coffee liquid manifold chamber 531 is larger than the inner diameter of the bottom, so that the coffee liquid can flow downward better and prevent the coffee liquid falling into the coffee liquid manifold chamber 531 from not flowing out quickly and coming into contact with the coffee powder again, causing over-extraction of the coffee powder.

[0044] In some embodiments, combined with Figure 4 ,Figure 5 and Figure 7 The pusher assembly is equipped with a coffee liquid discharge channel 532. One end of the discharge channel is connected to the coffee liquid outlet, and the other end of the discharge channel can be equipped with a liquid outlet connector 5321. The liquid outlet connector 5321 is connected to one end of the liquid outlet pipe, and the other end of the liquid outlet pipe discharges the coffee liquid. The other end of the discharge channel can be located on the side of the pusher assembly to facilitate connection with the liquid outlet pipe and to avoid affecting the coffee grounds pushing action of the pusher assembly.

[0045] Here, the discharge channel can also be understood as part of the coffee liquid manifold chamber 531, and the other end of the discharge channel corresponds to the coffee liquid outlet.

[0046] The dispensing tube can be a flexible tube, a metal tube, or other similar material; there are no specific restrictions. The dispensing tube delivers the brewed coffee into the user's coffee cup, completing the coffee preparation process.

[0047] In this embodiment, the coffee liquid discharge channel 532 is directly integrated into the push rod assembly, enabling the push rod assembly to integrate multiple functions (such as pushing coffee grounds and collecting coffee liquid), reducing the number of structural components required for the brewing system.

[0048] In some embodiments, a nozzle may be provided at the bottom of the water supply channel to spray water evenly onto the coffee powder. For example, the water supply system 6 can be connected to the water supply channel through the water inlet connector 42, water pipe, copper hoop, etc. Drinking water enters the water inlet connector 42 and water pipe, and then enters the brewer body 51 through the water supply channel.

[0049] The nozzle design allows water to be sprayed more evenly onto the coffee puck on the push rod assembly filter 52, improving the uniformity of coffee puck brewing.

[0050] In some embodiments, combined with Figure 1 The water supply system 6 may include a water tank 61, a water pump 62, a heating element, and pipes connecting the water tank 61, water pump 62, and heating element. The water pump 62 is connected to the water tank 61 and delivers water from the tank 61 to the heating element for heating. The heating element is connected to one end of the water supply channel, allowing heated hot water to be delivered into the water supply channel. The heating element may be, but is not limited to, a heating pot 63. The water supply system 6 can provide hot water for making hot coffee and can also be connected to the top of the water supply channel, allowing hot water to brew the coffee grounds in the brewer body 51 from top to bottom.

[0051] In some embodiments, the frame 1 of the coffee machine may be provided with horizontal and vertical moving tracks, allowing the brewer assembly 5 to move along these tracks under the drive of the drive assembly. The horizontal and vertical moving tracks ensure smoother movement of the brewer assembly 5. The drive assembly can be connected to the brewer body 51, driving it to move along the horizontal and vertical tracks. The drive assembly may include a motor or other driving component 2 and a transmission mechanism 3 connected to the motor. The transmission mechanism 3 is connected to the brewer body 51 to drive the brewer assembly 5. The specific structure of the drive assembly is not limited, as long as it can push the brewer body 51 to perform the aforementioned moving action.

[0052] After receiving the coffee powder, the brewer body 51 does not need to be tilted at a certain angle before tamping and brewing, which allows the coffee powder to be distributed more evenly in the brewer, thereby ensuring the uniformity of the coffee powder during the subsequent tamping and brewing process.

[0053] In some embodiments, a limiting mechanism may be provided on the frame 1 of the coffee machine. The limiting mechanism is used to limit the movement of the push rod assembly after the coffee brewing is completed, so that the brewer body 51 moves downward relative to the push rod assembly. The push rod assembly pushes out the coffee grounds in the brewer body 51, realizing the automatic discharge of coffee grounds. When the coffee brewing is completed, the brewer assembly 5 moves downward until the bottom of the push rod assembly contacts the limiting mechanism. The push rod assembly is then limited and cannot move further downward. However, the brewer body 51 continues to move downward under the drive of the drive assembly. At this time, relative movement occurs between the brewer body 51 and the push rod assembly. The push rod assembly moves upward relative to the brewer body 51, pushing out the coffee grounds in the brewer body 51.

[0054] Combination Figure 5 The limiting mechanism can be a flip-up limiting block 7 mounted on the frame 1. When the brewer assembly 5 moves upward, the limiting block 7 flips upward under the pushing action of the push rod assembly. When the push rod assembly continues to move upward and disengages from the limiting block 7, the limiting block 7 can automatically reset under the action of the torsion spring and maintain its reset position. When the push rod assembly moves downward, the limiting block 7 serves to limit the push rod assembly.

[0055] In some embodiments, the filter 52 is detachably mounted at the opening. For example, a recessed mounting surface can be provided at the opening to secure the filter 52. Of course, the filter 52 can also be detachably mounted at the opening in other ways; this is merely an example and does not constitute a limitation on the scope of the claims. The detachable connection of the filter 52 allows for cleaning of both the filter 52 and the coffee liquid manifold 531, preventing blockages in the coffee liquid manifold 531 that cannot be cleaned quickly.

[0056] In some embodiments, combined with Figure 7 The coffee liquid collection chamber 531 is funnel-shaped, combined with... Figure 8 Alternatively, the coffee liquid outlet may be offset at the bottom of the coffee liquid collection chamber 531. Here, the coffee liquid outlet can be located at the very bottom of the coffee liquid collection chamber 531, allowing the coffee liquid to flow along the inner wall of the chamber to the outlet for mixing before flowing out. The top end of the discharge channel 532 can communicate with the coffee liquid outlet, and the other end of the discharge channel 532 extends downwards. The discharge channel 532 is offset relative to the coffee liquid collection chamber 531 and can be parallel to the push rod body 53. The coffee liquid outlet is located at the very bottom of the funnel-shaped coffee liquid collection chamber 531, ensuring that the coffee liquid can smoothly collect at the outlet before being discharged.

[0057] This application also provides a coffee machine, including a frame 1, and the coffee machine further includes a coffee brewing system as described in any of the above embodiments, disposed on the frame 1. The coffee brewed by the above-described coffee brewing system produces a more uniform coffee liquid with a better taste.

[0058] The foregoing has described in detail several embodiments of this application, but this application is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications based on the concept of this application, and all such variations and modifications should fall within the scope of protection claimed in this application.

Claims

1. A coffee brewing system, applied to a coffee machine, characterized in that, The coffee machine comprises: a brewing head assembly (4) having a water supply channel; a brewer assembly (5) comprising a brewer body (51), a pusher assembly and a filter screen (52), a top of the pusher assembly extending into the brewer body (51) from a bottom of the brewer body (51), the pusher assembly having a coffee liquid collecting chamber (531) with an open top and a coffee liquid outlet at a bottom of the coffee liquid collecting chamber (531), the filter screen (52) being arranged at the open top; wherein, during a brewing process, the top of the brewer body (51) is kept in an upward state.

2. The coffee brewing system according to claim 1, wherein, An inner diameter of the top of the coffee liquid collecting chamber (531) is larger than an inner diameter of the bottom of the coffee liquid collecting chamber (531).

3. The coffee brewing system according to claim 1, wherein, The pusher assembly is provided with a coffee liquid discharge channel (532) having one end in communication with the coffee liquid outlet and the other end connected to one end of a liquid outlet pipe, the other end of the liquid outlet pipe discharging coffee liquid.

4. The coffee brewing system according to claim 1, wherein, The bottom of the water supply channel is provided with a spray head for spraying water uniformly to coffee powder.

5. The coffee brewing system according to claim 4, wherein, The water supply system (6) comprises a water tank (61), a water pump (62) and a heating assembly, the water pump (62) being connected to the water tank (61) and delivering water in the water tank (61) to the heating assembly for heating, the heating assembly being in communication with one end of the water supply channel.

6. The coffee brewing system according to claim 1, wherein, The coffee machine is provided with horizontal and vertical moving tracks on a machine frame (1), and the brewer assembly (5) is capable of moving along the horizontal and vertical moving tracks under the drive of a drive assembly.

7. The coffee brewing system according to claim 1, wherein, The machine frame (1) is further provided with a limiting mechanism for limiting the action of the pusher assembly after completion of coffee brewing, so that the brewer body (51) moves downward relative to the pusher assembly, and the pusher assembly pushes coffee powder residue in the brewer body (51) out.

8. The coffee brewing system according to claim 1, wherein, The filter screen (52) is detachably arranged at the open top.

9. The coffee brewing system according to claim 1, wherein, The coffee liquid collecting chamber (531) is funnel-shaped, or the coffee liquid outlet is eccentrically arranged at the bottom of the coffee liquid collecting chamber (531).

10. A coffee maker comprising a frame (1), characterized in that, The coffee machine further comprises the coffee brewing system as claimed in any one of claims 1 to 9 arranged on the machine frame (1).

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