Brewing mechanism of coffee machine and water separator thereof

Abstract

The invention relates to a coffee machine brewing mechanism and a water segregator thereof, and the water segregator comprises a water diversion disc which is provided with a water inlet; the filter screen covers the water distribution disc and is provided with a plurality of water outlet holes along the circumferential direction; a water flow space is formed between the filter screen and the water distribution disc and is communicated with a water inlet pipeline of the brewing mechanism through a water inlet; a multi-stage water diversion structure is arranged in the water flow space, the water diversion structure enables water flow to uniformly diffuse and flow in the circumferential direction of the water flow space after flowing into the water flow space through the water inlet so as to divide the water flow, and the divided water flow enters a brewing chamber of a brewing mechanism of the coffee machine from the water outlet hole. By means of the structural design of the water segregator, water flow is distributed to penetrate through coffee powder cakes more evenly, then the coffee powder cakes are fully extracted, and the taste and quality of coffee are guaranteed.

Description

Technical Field

[0001] The present invention relates to a coffee machine, especially in the technical field of fully automatic coffee machines, and particularly relates to a coffee machine brewing mechanism and a water distributor thereof. Background Art

[0002] At present, a filter screen or a filter screen and a water distribution screen are generally provided at the water inlet end of the brewing piston of a coffee machine. After the ground coffee powder is pressed into a cake in the brewing chamber of the brewing device, water flows through the filter screen or the filter screen and the water distribution screen to extract coffee from the cake. However, in the existing coffee extraction process, the following phenomena exist: the water flow is uneven when passing through the cake, and even a channel effect occurs; the water flow quickly passes through the middle of the cake, while the outer or edge part of the cake is not even passed through by the water flow. The existence of the above phenomena makes the coffee extraction insufficient, thus affecting the taste and quality of the coffee. Summary of the Invention

[0003] Based on this, in view of the above technical problems existing in the prior art, it is necessary to provide a coffee machine brewing mechanism and a water distributor thereof. Through the structural design of the water distributor, the water flow is distributed more evenly to pass through the coffee cake, so as to fully extract the coffee cake and ensure the taste and quality of the coffee.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A water distributor of a coffee machine brewing mechanism, comprising:

[0006] A water distribution plate, on which there is a water inlet;

[0007] A filter screen, covering the water distribution plate and having a plurality of uniformly distributed water outlet holes along the circumferential direction;

[0008] A water flow space is formed between the filter screen and the water distribution plate, and the water flow space is connected to the water inlet pipe of the brewing mechanism through the water inlet;

[0009] A multi-stage water distribution structure is arranged in the water flow space. The water distribution structure enables the water flow to flow evenly along the circumferential direction of the water flow space after flowing into the water flow space through the water inlet to divide the water flow, and the divided water flow enters the brewing chamber of the coffee machine brewing mechanism through the water outlet holes.

[0010] Preferably, the multi-stage water distribution structure at least includes a first-stage water distribution structure and a second-stage water distribution structure connected to the first-stage water distribution structure. The multi-stage water distribution structure divides the water flow space into multiple water distribution areas distributed radially outward from the central part of the water flow space in sequence.

[0011] Preferably, the first-stage water distribution structure includes an annular flow channel arranged circumferentially around the center of the water flow space for the water flow to pass through. The annular flow channel is connected to the water inlet to perform the first-stage diversion of the water flow;

[0012] Preferably, the annular flow channel includes a first side wall and a second side wall connecting the upper surface of the water distribution tray and the lower surface of the filter screen. The first side wall is circumferentially arranged at the central part of the water distribution tray or the filter screen, and the second side wall is circumferentially arranged on the water distribution tray or the filter screen and surrounds the first side wall;

[0013] Preferably, both the first side wall and the second side wall are arranged on the filter screen;

[0014] Preferably, a first groove is arranged on the upper surface of the central part of the water distribution tray. The first side wall extends from the filter screen towards the water distribution tray and abuts against the bottom surface of the first groove, and the second side wall surrounds the first groove and at least partially abuts against the upper surface of the water distribution tray;

[0015] Preferably, the projection of the second side wall on the water distribution tray surrounds the circumference of the first groove and at least partially covers the projection of the first groove on the water distribution tray;

[0016] Preferably, the first side wall, the second side wall, and the first groove are concentrically arranged.

[0017] Preferably, the water inlet is arranged along the radial direction of the water distribution tray. The water inlet is connected to the annular flow channel through a water inlet channel, and the water flow flows along the radial direction of the water distribution tray in the water inlet channel;

[0018] Preferably, the water inlet channel includes a third side wall surrounding the water inlet. The third side wall is arranged at the position corresponding to the water inlet on the lower surface of the filter screen. The third side wall extends from the filter screen towards the water distribution tray and at least partially abuts against the upper surface of the water distribution tray. The cross-sectional shape of the third side wall matches the shape of the water inlet;

[0019] Preferably, the projection of the third side wall on the water distribution tray surrounds the circumference of the water inlet and at least partially covers the projection of the water inlet on the water distribution tray;

[0020] Preferably, the water inlet is arranged in a direction deviating from the center of the water flow space relative to the annular flow channel.

[0021] Preferably, the second-stage water distribution structure is arranged outside the first-stage water distribution structure and includes a water-blocking and flow-diverting rib arranged on the water distribution tray or the filter screen. The water-blocking and flow-diverting rib is used to block the radial flow path of the water flow to make it circumferentially diffuse;

[0022] Preferably, the water-blocking and flow-diverting rib is arranged on the water distribution tray. One end of the water-blocking and flow-diverting rib extends from the water distribution tray towards the filter screen and abuts against the lower surface of the filter screen;

[0023] Preferably, the first side surface of the water-blocking and flow-diverting rib facing the first-stage water distribution structure is a curved surface, and the first side surface bends towards the direction away from the first-stage water distribution structure. The second side surface of the water-blocking and flow-diverting rib facing away from the first-stage water distribution structure is parallel to the first side surface;

[0024] Preferably, the number of the water-blocking and flow-dividing ribs is set to at least three, and they are arranged at intervals along the circumferential direction of the water-dividing tray;

[0025] Preferably, the number of the water-blocking and flow-dividing ribs is set to five, and they are evenly arranged at intervals along the circumferential direction of the water-dividing tray.

[0026] Preferably, the second-stage water-dividing structure is connected to the first-stage water-dividing structure through a connecting channel, and the connecting channel is arranged on the water-dividing tray;

[0027] Preferably, the connecting channel includes a plurality of second grooves arranged on the upper surface of the water-dividing tray along the radial direction of the water-dividing tray. One end of each second groove is connected to the first groove, and the other end is connected to a water-blocking and flow-dividing rib;

[0028] Preferably, the bottom of the second groove is higher than the bottom of the first groove, and the bottom of the second groove gradually becomes higher as it moves away from the first groove.

[0029] Preferably, support columns are arranged on the filter net. One end of each support column extends from the lower surface of the filter net towards the water-dividing tray and abuts against the upper surface of the water-dividing tray;

[0030] Preferably, third grooves are arranged on the upper surface of the water-dividing tray, and the support columns abut against the bottom surfaces of the third grooves;

[0031] Preferably, there are a plurality of support columns and third grooves respectively, and they are both evenly arranged around the circumferential direction of the water-dividing structure.

[0032] Preferably, the water outlet holes are evenly arranged at intervals along the circumferential direction of the filter net, and the opening on the side of the water outlet hole facing the water-dividing tray is larger than the opening on the side of the water outlet hole away from the water-dividing tray.

[0033] Preferably, a fixing component is arranged at the center of the filter net and the water-dividing tray, and the filter net and the water-dividing tray are fixedly connected through the fixing component.

[0034] To solve the above technical problems, another technical solution adopted by the present invention is:

[0035] A coffee machine brewing mechanism includes a powder box. A slag pushing rod is movably arranged in the powder box. A water-dividing device as described in any one of claims 1 to 9 is arranged at the top of the slag pushing rod. A water inlet pipe is arranged inside the slag pushing rod. One end of the water inlet pipe is communicated with a water inlet, and the other end is communicated with the water inlet pipeline of the coffee machine brewing mechanism.

[0036] Due to the adoption of the above technical solution, the present invention has the following advantages compared with the prior art:

[0037] 1. The present invention creatively designs a novel water divider structure to replace the water dividing net in the prior art. The water divider of the present invention has a water inlet opened on the lower surface of the bottom of the water dividing plate. A water flow space is formed between the water dividing plate and the filter screen, and a multi-stage water dividing structure is formed in the water flow space, so that water flows into the upper part of the water dividing plate from the water inlet, and after being circumferentially and uniformly diffused by the multi-stage water dividing structure, it uniformly passes out from the upper surface of the filter screen and enters the brewing chamber of the coffee machine brewing mechanism. The above-mentioned single-layer multi-stage water divider structure designed by the present invention makes the water flow distribution more uniform;

[0038] 2. Preferably, the present invention allows water to enter the water dividing plate through an eccentric position and spread to the plate surface, leaving screw fixing holes for fixing the water dividing plate and the filter screen at the central position. At the same time, the water uniformly enters the coffee machine brewing chamber from bottom to top, passes through the coffee powder cake, and fully extracts it, ensuring the taste and quality of the coffee;

[0039] 3. The water divider structure design of the present invention makes the water pressure at different positions relatively uniform, so that the pressure difference at different positions on the water dividing plate is small, and the time difference of water flow passing through the coffee powder cake at different positions is also small, so that the coffee powder cake is uniformly penetrated by the water flow, and the extraction is more sufficient, ensuring the extraction quality of the coffee and the taste of the coffee beverage. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a schematic structural diagram of the water divider of the present invention;

[0041] Figure 2 is a cross-sectional view of the water divider of the present invention;

[0042] Figure 3 is a schematic structural diagram of the upper surface of the filter screen of the water divider of the present invention;

[0043] Figure 4 is a schematic structural diagram of the lower surface of the filter screen of the water divider of the present invention;

[0044] Figure 5 is a schematic structural diagram of the water divider of the present invention with the filter screen hidden;

[0045] Figure 6 is a partial schematic structural diagram of the coffee machine brewing mechanism of the present invention;

[0046] Figure 7 is Figure 6 a cross-sectional view of;

[0047] Figure 8 is a simulation diagram of the water flow velocity and pressure distribution of the water divider of the present invention;

[0048] Figure 9 is a schematic structural diagram of the water divider of Comparative Example 1;

[0049] Figure 10Simulation diagram of the water flow velocity and pressure distribution of the water separator in Comparative Example 1;

[0050] Figure 11 Structural schematic diagram of the water separator in Comparative Example 2;

[0051] Figure 12 Simulation diagram of the water flow velocity and pressure distribution of the water separator in Comparative Example 2. Specific embodiments

[0052] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0053] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions used herein are only for the purpose of illustration.

[0054] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined. In the present application, " / " means "or".

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this invention belongs. The terms used herein in the description of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0056] Currently, during the coffee extraction process of the brewer of a coffee machine, the following phenomena exist: the water flow is uneven when passing through the coffee puck, and even the channel effect occurs; the water flow quickly passes through the middle of the coffee puck, while the outer or edge part of the coffee puck is not even penetrated by the water flow. The existence of the above phenomena makes the coffee extraction insufficient, thus affecting the taste and quality of the coffee.

[0057] On this basis, the present invention first provides a water distributor for a coffee machine brewing mechanism. The water distributor includes: a water distribution plate, on which an inlet is provided; a filter screen, covering the water distribution plate and provided with a plurality of outlet holes along the circumference; a water flow space is formed between the filter screen and the water distribution plate, and the water flow space is connected to the water inlet pipeline of the brewing mechanism through the inlet; a multi-stage water distribution structure is arranged in the water flow space, and the water distribution structure enables the water flowing into the water flow space through the inlet to uniformly diffuse and flow along the circumference of the water flow space to distribute the water flow, and the distributed water flow enters the brewing chamber of the coffee machine brewing mechanism through the outlet holes.

[0058] Through the structural design of the water distributor, the present invention enables the water flow to be more evenly distributed through the coffee powder cake, thereby fully extracting the coffee powder cake and ensuring the taste and quality of the coffee.

[0059] The following describes the present invention in detail with specific embodiments.

[0060] As Figures 1 to 5 shown, the water distributor of the coffee machine brewing mechanism in this embodiment includes: a water distribution plate 100, on which an inlet 101 is provided; a filter screen 200, covering the water distribution plate 100 and provided with a plurality of uniform outlet holes 201 along the circumference; a water flow space is formed between the filter screen 200 and the water distribution plate 100, and the water flow space is connected to the water inlet pipeline of the brewing mechanism through the inlet 101; a multi-stage water distribution structure is arranged in the water flow space, and the water distribution structure enables the water flowing into the water flow space through the inlet to uniformly diffuse and flow along the circumference of the water flow space to distribute the water flow, and the distributed water flow enters the brewing chamber of the coffee machine brewing mechanism through the outlet holes. In the water distributor of this embodiment, the water flow flows into the water flow space from the water inlet pipeline 4 of the brewing mechanism through the inlet 101, that is, the space between the upper surface of the water distribution plate 100 and the lower surface of the filter screen 200. The multi-stage water distribution structure arranged in the water flow space distributes the water flow, so that the water flow can be more evenly discharged from the outlet holes 201 on the upper surface of the filter screen 200, enabling the coffee powder cake to be evenly penetrated by the water flow and more fully extracted, ensuring the extraction quality of the coffee and the taste of the coffee beverage. In this application, the water flow directly enters the upper surface of the water distribution plate 100 through the inlet 101 opened on the water distribution plate 100 of the water distributor for multi-stage distribution, forming a single-layer multi-stage distribution structure for water flow distribution.

[0061] Specifically, in this embodiment, the water distribution plate 100 includes a circular bottom and a first connecting portion extending upward along the end of the bottom, and the filter screen 200 includes a circular body and a second connecting portion recessed into the body along the end of the body. The filter screen 200 is covered on the water distribution plate 100 and connected through the first connecting portion and the second connecting portion. A cylindrical water flow space is formed between the filter screen 200 and the water distribution plate 100.

[0062] In some specific embodiments, in order to more firmly connect the filter screen 200 and the water distribution tray 100, a fixing component is provided at the centers of the filter screen 200 and the water distribution tray 100, and the filter screen 200 and the water distribution tray 100 are fixedly connected through the fixing component. Specifically, mounting holes are provided at the centers of the filter screen 200 and the water distribution tray 100, and the fixing component includes fixing screws 5 which are arranged in the mounting holes to fixedly connect the filter screen 200 and the water distribution tray 100.

[0063] In some specific embodiments, the multi-stage water distribution structure includes at least two water distribution structures, specifically, it can be two, three, four water distribution structures, etc. The specific designs of each water distribution structure can be the same or different.

[0064] In this embodiment, the multi-stage water distribution structure includes a first-stage water distribution structure 300 and a second-stage water distribution structure 400 communicated with the first-stage water distribution structure 300. The first-stage water distribution structure 300 and the second-stage water distribution structure 400 are arranged in sequence radially outward from the central part of the water flow space, dividing the water flow space into multi-stage water distribution areas distributed radially outward from the central part of the water flow space in sequence.

[0065] In this embodiment, the first-stage water distribution structure 300 includes an annular flow channel 303 provided circumferentially around the center of the water flow space for the water flow to pass through. The annular flow channel 303 is communicated with the water inlet 101 to perform the first-stage diversion of the water flow, and a first-stage water distribution area is formed in the annular flow channel 303. Specifically, the annular flow channel 303 includes a first side wall 301 and a second side wall 302 connecting the upper surface of the water distribution tray 100 and the lower surface of the filter screen 200. The first side wall 301 is circumferentially arranged on the central part of the filter screen 200, and the second side wall 302 is circumferentially arranged on the filter screen 200 and arranged around the first side wall 301. In other specific embodiments, the first side wall 301 can also be arranged on the central part of the water distribution tray 100, and the second side wall 302 can also be arranged on the central part of the water distribution tray 100.

[0066] In order to increase the space of the annular flow channel 303, a first groove 102 is provided on the upper surface of the central part of the water distribution plate 100. The first side wall 301 extends from the filter screen 200 towards the water distribution plate 100 and abuts against the bottom surface of the first groove 102. The second side wall 302 is arranged around the first groove 102 and at least partially abuts against the upper surface of the water distribution plate 100. The annular flow channel 303 is composed of the first side wall 301, the second side wall 302, the first groove 102, and a partial surface of the filter screen 200. Specifically, the projection of the second side wall 302 on the water distribution plate 100 surrounds the circumference of the first groove 102 and at least partially covers the projection of the first groove 102 on the water distribution plate 100. The first side wall 301, the second side wall 302, and the first groove 102 are concentrically arranged, so that water flow can only enter the second-stage water distribution structure 400 from the first-stage water distribution structure 300 through the connection channel 500, ensuring the water distribution pressure and the uniformity of water distribution.

[0067] In this embodiment, the water inlet 101 is arranged along the radial direction of the water distribution plate 100. The water inlet 101 is connected to the annular flow channel 303 through a water inlet channel 600, and the water flow flows along the radial direction of the water distribution plate 100 in the water inlet channel 600. Specifically, the water inlet channel 600 includes a third side wall 601 surrounding the water inlet 101. The third side wall 601 is arranged at a position corresponding to the water inlet 101 on the lower surface of the filter screen 200. The third side wall 601 extends from the filter screen 200 towards the water distribution plate 100 and at least partially abuts against the upper surface of the water distribution plate 100. The cross-sectional shape of the third side wall 601 matches the shape of the water inlet 101. The projection of the third side wall 601 on the water distribution plate 100 surrounds the circumference of the water inlet 101 and at least partially covers the projection of the water inlet 101 on the water distribution plate 100, so that the water flow can only flow radially into the annular flow channel 303 along the water inlet channel 600, further ensuring the water distribution pressure and the uniformity of water distribution.

[0068] In this embodiment, the water inlet 101 is arranged in a direction deviating from the center of the water flow space with respect to the annular flow channel 303. Specifically, the water inlet 101 is arranged outside the edge of the annular flow channel 303, and the water inlet 101 is communicated with the side wall of the first groove 102.

[0069] In this embodiment, the water inlet 101 is eccentrically arranged, reserving a screw fixing hole position for fixing the water distribution plate 100 and the filter screen 200 at the central position of the water distribution plate 100. Such an arrangement can not only ensure the convenient disassembly and assembly of the filter screen 200 through the central fixing component, but also reduce the uneven water flow caused by asymmetry. In some other embodiments, if the central fixing method of the filter screen is not considered, the water inlet can also be arranged at the center of the water distribution plate.

[0070] In this embodiment, the second - stage water - dividing structure 400 is arranged outside the first - stage water - dividing structure 300. A secondary water - dividing area is formed between the second - stage water - dividing structure 400 and the first - stage water - dividing structure 300, and a tertiary water - dividing area is formed outside the second - stage water - dividing structure 400. The second - stage water - dividing structure 400 includes water - blocking and flow - dividing ribs 401 arranged on the water - dividing plate 100. The water - blocking and flow - dividing ribs 401 are used to block the radial flow path of the water so that it diffuses circumferentially. In some other specific embodiments, the water - blocking and flow - dividing ribs 401 can also be arranged on the filter screen 200. Specifically, one end of the water - blocking and flow - dividing rib 401 extends from the water - dividing plate 100 towards the filter screen 200 and abuts against the lower surface of the filter screen 200. The first side surface of the water - blocking and flow - dividing rib 401 facing the first - stage water - dividing structure 300 is a curved surface, especially the first side surface is curved in a direction away from the first - stage water - dividing structure 300. The second side surface of the water - blocking and flow - dividing rib 401 facing away from the first - stage water - dividing structure 300 is parallel to the first side surface. The third side surface and the fourth side surface of the water - blocking and flow - dividing rib 401 connecting the first side surface and the second side surface are curved surfaces curved in a direction away from the water - blocking and flow - dividing rib 401. Specifically, the water - blocking and flow - dividing rib 401 can be a curved waist - shaped convex - block structure.

[0071] In this application, the number of the water - blocking and flow - dividing ribs 401 is set to at least two, and they are arranged at intervals along the circumference of the water - dividing plate 100. More preferably, as in this embodiment, the number of the water - blocking and flow - dividing ribs 401 is set to 5, and they are evenly spaced along the circumference of the water - dividing plate 100. The 5 water - blocking and flow - dividing ribs 401 and the water inlet 101 are evenly distributed on the same circumference of the water - dividing plate 100. The water inlet 101 is arranged between two adjacent water - blocking and flow - dividing ribs 401 on the same circumference, which further ensures the water - dividing pressure and water - dividing uniformity.

[0072] To achieve a better water - dividing effect, in this embodiment, the outer surface of the farthest end of the water inlet channel 600 from the center of the filter screen 200 can be set as a curved surface curved in a direction away from the first - stage water - dividing structure 300.

[0073] In this embodiment, the second - stage water - dividing structure 400 and the first - stage water - dividing structure 300 are connected through a connection channel 500. The connection channel 500 is arranged on the water - dividing plate 100. The connection channel 500 includes a plurality of second grooves 103 arranged on the upper surface of the water - dividing plate 100 along the radial direction of the water - dividing plate 100. One end of each second groove 103 is connected to the first groove 102, and the other end is connected to a water - blocking and flow - dividing rib 401. Specifically, the bottom of the second groove 103 is higher than the bottom of the first groove 102, and the bottom of the second groove 103 gradually becomes higher as it moves away from the first groove 102. The number of the second grooves 103 is equal to the number of the water - blocking and flow - dividing ribs 401, and they are arranged in one - to - one correspondence with the water - blocking and flow - dividing ribs 401. The second grooves 103 are connected to the center position of the bottom of the first side surface of the water - blocking and flow - dividing rib 401 facing the first - stage water - dividing structure 300.

[0074] In this embodiment, support columns 202 are provided on the filter screen 200. In this embodiment, one end of the support column 202 extends from the filter screen 200 towards the water distribution tray 100 and abuts against the upper surface of the water distribution tray 100.

[0075] In order to better achieve the effect of fixing and supporting, a third groove 104 is provided on the upper surface of the water distribution tray 100. One end of the support column 202 extends from the filter screen 200 towards the water distribution tray 100 and abuts against the bottom surface of the third groove 104.

[0076] In this embodiment, there are multiple support columns 202 and third grooves 104 respectively, and they are both evenly spaced around the circumference of the water distribution structure. The support columns 202 and the third grooves 104 are arranged in one-to-one correspondence. Specifically, the multiple support columns 202 can be arranged in a circular pattern on the filter screen 200, or the multiple support columns 202 can be arranged in multiple concentric circular patterns on the filter screen 200, and their common center is the center of the water distribution tray 100 or the filter screen 200.

[0077] In this embodiment, the water outlet holes 201 are evenly spaced along the circumference of the filter screen 200. Specifically, the multiple water outlet holes 201 can be arranged in a circular pattern on the filter screen 200, or the multiple water outlet holes 201 can be arranged in multiple concentric circular patterns on the filter screen 200, and their common center is the center of the water distribution tray 100 or the filter screen 200. The water outlet holes 201 are arranged around the circumference of the water distribution structure. More specifically, the water outlet holes 201 are arranged around the circumference of the second-stage water distribution structure 400.

[0078] In order to achieve a better water outlet effect, the opening on the side of the water outlet hole 201 facing the water distribution tray 100 is larger than the opening on the side of the water outlet hole 201 away from the water distribution tray 100.

[0079] In this embodiment, in order to achieve a better uniform water outlet effect, the support column 202 and the water outlet hole 201 are spaced apart in the direction from the center to the edge of the water flow space. Specifically, the multiple water outlet holes 201 are arranged in multiple concentric circular patterns on the filter screen 200, and the multiple support columns 202 are arranged in a circular pattern and are located between two adjacent circles formed by the multiple water outlet holes 201.

[0080] The simulation diagram of the water flow velocity and pressure distribution of the water distributor in this embodiment is as Figure 8 shown.

[0081] In summary, in the water diverter of this embodiment, water flows into the water flow space through the water inlet pipeline of the brewing mechanism. The water diversion structure arranged in the water flow space diverts the water flow, making the water flow distribution more uniform, and the water pressure at different positions is relatively uniform. As a result, the pressure difference at different positions on the water diversion plate 200 is small, and the time difference for the water flow at different positions to pass through the coffee powder cake is also small, enabling the coffee powder cake to be evenly penetrated by the water flow, with more sufficient extraction, ensuring the extraction quality of coffee and the taste of coffee beverages.

[0082] Comparative Example 1

[0083] See Figure 9 As shown, the main structural difference between the water diverter in this comparative example and the water diverter in Embodiment 1 is that the water diverter in this comparative example does not have the water blocking and flow dividing ribs 401 connected to the connection channel 500 outside the first-stage water diversion structure 300. The simulation diagram of the water flow velocity and pressure distribution is as Figure 10 shown.

[0084] Comparative Example 2

[0085] See Figure 11 As shown, the main structural difference between the water diverter in this comparative example and the water diverter in Embodiment 1 is that although the water diverter in this comparative example has the water blocking and flow dividing ribs 401 connected to the connection channel 500 outside the first-stage water diversion structure 300, the number of its water blocking and flow dividing ribs 401 is set to 4, which are evenly spaced along the circumferential direction of the water diversion plate 100. The simulation diagram of the water flow velocity and pressure distribution is as Figure 12 shown.

[0086] Combined with the water diverter structure of the present application and the water diverter structures shown in the comparative examples Figure 9 and Figure 11 respectively, and the corresponding simulation diagrams of the water flow velocity and pressure distribution are analyzed. Among them, the color changes from light to deep, and the darker the color, the greater the pressure and the faster the flow velocity. The water flow first flows out from the water outlet holes on the upper surface of the filter screen of the water diverter. It can be seen from the simulation diagrams of the water flow velocity and pressure distribution in this embodiment, Comparative Example 1, and Comparative Example 2 that the green water outlet points of the water diverter in this embodiment are relatively evenly distributed outside the center of the upper surface of the water diverter, basically consistent with the water outlet holes on the surface of the filter screen, and the color difference is relatively small, indicating that the water outlet is uniform and the time is similar, thus indicating that the effect of uniform water diversion is achieved. Comparative Example 2 is the second, and Comparative Example 1 is the worst.

[0087] As Figures 6 to 7As shown in the figure, the present invention also provides a coffee machine brewing mechanism, which includes a powder box 1. A slag pushing rod 2 is movably arranged in the powder box 1. The top of the slag pushing rod 2 is provided with the water distributor as described above. A water inlet pipe 3 is arranged inside the slag pushing rod 2. One end of the water inlet pipe 3 is communicated with the water inlet 101, and the other end is communicated with the water inlet pipeline 4 of the coffee machine brewing mechanism. A sealing ring 6 is provided between the water inlet pipe 3 and the water inlet 101 on the water distribution plate 100, and the sealing ring 6 can prevent water pressure and water flow from leaking.

[0088] In some embodiments, the water distributor is detachably fixedly connected to the top of the slag pushing rod 2. In some embodiments, the water distribution plate 100 of the water distributor can be integrally formed with the slag pushing rod 2. In addition to the water distribution function, the water distributor also serves as a slag pushing piston and can be driven to move in the brewing chamber formed by the powder box 1 along with the slag pushing rod 2 to press the coffee powder and perform extraction.

[0089] The coffee machine brewing mechanism of the present invention also has the beneficial effects of the water distributor as described above, making the water flow distribution more uniform, and the water pressure at different positions is relatively uniform as well. The pressure difference at different positions on the water distribution plate 200 is small, and the time difference for the water flow to pass through the coffee powder cake at different positions is also small, enabling the coffee powder cake to be evenly penetrated by the water flow and ensuring more sufficient extraction, thus guaranteeing the extraction quality of coffee and the taste of coffee beverages.

[0090] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0091] The above-described embodiments only represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A water distributor for a coffee machine brewing mechanism, characterized in that: include: A water distribution plate (100), wherein the water distribution plate (100) is provided with a water inlet (101); A filter screen (200) is covered on the water distribution plate (100) and is provided with a plurality of evenly spaced water outlet holes (201) along the circumference; A water flow space is formed between the filter screen (200) and the water distribution tray (100), and the water flow space is connected to the water inlet pipeline (4) of the brewing mechanism through the water inlet (101); A multi-level water diversion structure is arranged in the water flow space, and the water diversion structure enables the water to diffuse and flow evenly along the circumference of the water flow space after flowing into the water flow space through the water inlet (101) so as to divert the water flow, and the diverted water flows into the brewing chamber of the brewing mechanism of the coffee machine from the water outlet (201).

2. The water distributor of the coffee machine brewing mechanism according to claim 1, characterized in that: The multi-level water-dividing structure comprises at least a first-level water-dividing structure (300) and a second-level water-dividing structure (400) connected to the first-level water-dividing structure (300). The multi-level water-dividing structure divides the water flow space into a multi-level water-dividing area distributed in sequence from the center of the water flow space along the radial direction to the periphery.

3. The water distributor of the coffee machine brewing mechanism according to claim 2, characterized in that: The first-stage water diversion structure (300) comprises an annular flow channel (303) arranged circumferentially around the center of the water flow space for water flow to pass through, and the annular flow channel (303) is connected to the water inlet (101) to perform the first-stage diversion of the water flow; Preferably, the annular flow channel (303) comprises a first side wall (301) and a second side wall (302) connecting the upper surface of the water diversion plate (100) and the lower surface of the filter screen (200), wherein the first side wall (301) is circumferentially arranged at the center of the water diversion plate (100) or the filter screen (200), and the second side wall (302) is circumferentially arranged on the water diversion plate (100) or the filter screen (200) and is arranged around the first side wall (301); Preferably, the first side wall (301) and the second side wall (302) are both arranged on the filter screen (200); Preferably, a first groove (102) is provided on the upper surface of the central portion of the water diversion tray (100); the first side wall (301) extends from the filter screen (200) toward the water diversion tray (100) and abuts against the bottom surface of the first groove (102); and the second side wall (302) is provided around the first groove (102) and at least partially abuts against the upper surface of the water diversion tray (100); Preferably, the projection of the second side wall (302) on the water diversion plate (100) surrounds the circumference of the first groove (102) and at least partially covers the projection of the first groove (102) on the water diversion plate (100); Preferably, the first side wall (301), the second side wall (302), and the first groove (102) are concentrically arranged.

4. The water distributor of the coffee machine brewing mechanism according to claim 3, characterized in that: The water inlet (101) is arranged along the radial direction of the water dividing plate (100), the water inlet (101) is connected to the annular flow channel (303) through the water inlet channel (600), and water flows in the water inlet channel (600) along the radial direction of the water dividing plate (100); Preferably, the water inlet channel (600) comprises a third side wall (601) arranged around the water inlet (101); the third side wall (601) is arranged on the lower surface of the filter screen (200) at a position corresponding to the water inlet (101); the third side wall (601) extends from the filter screen (200) toward the water diversion tray (100) and at least partially abuts against the upper surface of the water diversion tray (100); and the cross-sectional shape of the third side wall (601) matches the shape of the water inlet (101); Preferably, the projection of the third side wall (601) on the water diversion plate (100) surrounds the circumference of the water inlet (101) and at least partially covers the projection of the water inlet (101) on the water diversion plate (100); Preferably, the water inlet (101) is arranged relative to the annular flow channel (303) in a direction deviating from the center of the water flow space.

5. The water distributor of the coffee machine brewing mechanism according to claim 4, characterized in that: The second-stage water diversion structure (400) is arranged outside the first-stage water diversion structure (300), and comprises a water-blocking diversion rib (401) arranged on the water diversion plate (100) or the filter screen (200), wherein the water-blocking diversion rib (401) is used to block the radial flow channel of the water flow so as to diffuse the water flow in a circumferential direction; Preferably, the water retaining diverter rib (401) is arranged on the water diverter plate (100), and one end of the water retaining diverter rib (401) extends from the water diverter plate (100) in the direction of the filter screen (200) and abuts against the lower surface of the filter screen (200); Preferably, the first side surface of the water retaining diversion rib (401) facing the first-level water diversion structure (300) is a curved surface, the first side surface is bent in a direction away from the first-level water diversion structure (300), and the second side surface of the water retaining diversion rib (401) facing away from the first-level water diversion structure (300) is parallel to the first side surface; Preferably, the number of the water retaining diverter ribs (401) is set to at least three, and they are arranged at intervals along the circumference of the water diverter plate (100); Preferably, the water retaining diverter ribs (401) are arranged in five numbers and are evenly spaced along the circumference of the water diverter plate (100).

6. The water distributor of the coffee machine brewing mechanism according to claim 5, characterized in that: The second-level water diversion structure (400) is connected to the first-level water diversion structure (300) via a connecting channel (500), and the connecting channel (500) is arranged on the water diversion plate (100); Preferably, the connecting channel (500) comprises a plurality of second grooves (103) arranged on the upper surface of the water diversion plate (100) along the radial direction of the water diversion plate (100), one end of each of the second grooves (103) being connected to the first groove (102), and the other end being connected to one of the water retaining shunt ribs (401); Preferably, the bottom of the second groove (103) is higher than the bottom of the first groove (102), and the bottom of the second groove (103) gradually increases in height in a direction away from the first groove (102).

7. The water distributor of the coffee machine brewing mechanism according to claim 1, characterized in that: The filter screen (200) is provided with a support column (202), one end of the support column (202) extending from the lower surface of the filter screen (200) in the direction of the water separation plate (100) and abutting against the upper surface of the water separation plate (100); Preferably, a third groove (104) is provided on the upper surface of the water diversion tray (100), and the support column (202) abuts against the bottom surface of the third groove (104); Preferably, a plurality of the support columns (202) and a plurality of the third grooves (104) are provided respectively, and are evenly arranged around the circumference of the water diversion structure.

8. The water distributor of the coffee machine brewing mechanism according to claim 1, characterized in that: The water outlet holes (201) are arranged at even intervals along the circumference of the filter screen (200), and the opening of the water outlet holes (201) on one side facing the water separation plate (100) is larger than the opening of the water outlet holes (201) on the side away from the water separation plate (100).

9. The water distributor of the coffee machine brewing mechanism according to claim 1, characterized in that: A fixing component is provided at the center of the filter screen (200) and the water separation tray (100), and the filter screen (200) and the water separation tray (100) are fixedly connected via the fixing component.

10. A coffee machine brewing mechanism, characterized in that: The invention comprises a powder box (1), wherein a slag push rod (2) is movably arranged inside the powder box (1), a water divider as claimed in any one of claims 1 to 9 is arranged on the top of the slag push rod (2), a water inlet pipe (3) is arranged inside the slag push rod (2), one end of the water inlet pipe (3) is connected to the water inlet (101), and the other end is connected to the water inlet pipeline (4) of the brewing mechanism of the coffee machine.

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