Powder bowl assembly for coffee extraction, extraction handle and coffee waterway system

Abstract

The utility model discloses a powder bowl assembly for coffee extraction, an extraction handle and a coffee waterway system, the powder bowl assembly comprises a powder bowl main body, a filter screen and a liquid collecting tray, the filter screen is arranged in the powder bowl main body and is provided with a plurality of first filter holes; the liquid collecting tray is arranged at the bottom of the powder bowl main body and is provided with a first liquid outlet nozzle; the bottom of the powder bowl main body is also provided with at least one second filtering hole positioned between the plurality of first filtering holes and the first liquid outlet nozzle; when the number of the second filter holes is one or more, the total cross sectional area of the second filter holes is smaller than the sum of the cross sectional areas of the first filter holes; therefore, when the coffee liquid extracted from the first filtering hole flows to the second filtering hole with a smaller cross section area, the resistance applied to the second filtering hole is further increased, so that secondary extraction of the coffee liquid can be realized, the extracted coffee liquid is richer in grease, and the taste and flavor of coffee are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee brewing, in particular to a powder bowl assembly for coffee extraction, an extraction handle and a coffee water system. Background Art

[0002] The coffee machine is usually provided with an extraction handle. When it is necessary to make coffee, the coffee powder ground by the bean grinding device is first collected through the extraction handle, and then the extraction handle is connected to the brewing head of the coffee machine to extract the coffee and brew the coffee liquid.

[0003] Patent No. 202420146990.9 discloses a multifunctional coffee extraction portafilter, which includes a grip portion with a hollow extraction seat at the top. The extraction seat houses a removable powder basket and a liquid collection tray. The bottom wall of the powder basket is provided with multiple spaced filter holes. The liquid collection tray is located below the powder basket, and a liquid discharge nozzle is provided at the bottom of the liquid collection tray. This allows for convenient adjustment of the powder basket and liquid collection tray to accommodate different coffee brewing volumes.

[0004] The filter holes at the bottom of the coffee basket play a key role in the coffee extraction process. They not only effectively intercept fine and ultra-fine coffee grounds, thereby improving the coffee's taste, but also provide the necessary resistance during the extraction process, thereby helping to build extraction pressure within the basket, resulting in richer coffee oils and a better flavor. However, when the hot water pressure of the coffee machine is insufficient or unstable, relying solely on the single-layer filter holes at the bottom of the coffee basket for extraction will not fully extract the oils and flavor of the coffee beans, thus affecting the taste and quality of the coffee. Utility Model Content

[0005] In order to overcome at least one of the defects described in the above-mentioned prior art, the present invention provides a powder basket assembly, an extraction handle and a coffee water system for coffee extraction. By providing at least one second filter hole at the bottom of the powder basket body, when the coffee liquid extracted from the first filter hole flows to the second filter hole with a smaller cross-sectional area, the resistance it encounters will be further increased, thereby achieving secondary extraction of the coffee liquid, thereby making the extracted coffee liquid richer in oil, thereby improving the taste and flavor of the coffee.

[0006] The technical solution adopted by the present invention to solve the problem is:

[0007] A coffee extraction powder basket assembly, comprising:

[0008] The powder bowl body has a first cavity with an open top formed therein;

[0009] A filter screen is disposed in the first cavity; the filter screen is provided with a plurality of first filter holes;

[0010] A liquid collecting tray is provided at the bottom of the powder bowl body; a first liquid outlet is provided at the bottom of the liquid collecting tray;

[0011] The bottom of the powder bowl body is provided with at least one second filter hole connected to the first cavity and located between the first filter holes and the first liquid outlet nozzle;

[0012] When there is a single second filter hole, the cross-sectional area of ​​the single second filter hole is smaller than the sum of the cross-sectional areas of the multiple first filter holes; when there are multiple second filter holes, the sum of the cross-sectional areas of the multiple second filter holes is smaller than the sum of the cross-sectional areas of the multiple first filter holes.

[0013] Furthermore, the sum of the cross-sectional areas of the plurality of first filter holes is S1, the cross-sectional area of ​​a single second filter hole or the sum of the cross-sectional areas of the plurality of second filter holes is S2, and the following condition is satisfied: 2.38≤S1 / S2≤485.

[0014] Furthermore, a first groove is provided inside the liquid collecting tray, which is connected to the second filter hole and the first liquid outlet nozzle respectively, and at least one filter screen is placed in the first groove.

[0015] Furthermore, a second cavity with an open top is formed inside the liquid collecting tray, and the liquid collecting tray is sleeved on the outer bottom of the powder bowl body through the second cavity and forms an interference fit with the powder bowl body.

[0016] Furthermore, it also includes a sealing ring arranged inside the second cavity. When the liquid collecting tray is mounted on the powder bowl body, the sealing ring abuts against the powder bowl body and the liquid collecting tray respectively to achieve a waterproof seal.

[0017] Furthermore, the liquid collecting tray is further provided with a convex ring located in the second cavity and arranged around the first groove, and the sealing ring is sleeved on the outer circumference of the convex ring.

[0018] Furthermore, the filter is embedded in the first cavity and forms an interference fit with the powder bowl body.

[0019] In addition, the second aspect of the present invention further provides an extraction handle, comprising a handle body, an extraction seat arranged at one end of the handle body, and the above-mentioned powder bowl assembly detachably placed in the extraction seat.

[0020] Furthermore, a third cavity with an open top is provided inside the extraction seat, and a second liquid outlet connected to the third cavity is provided at the bottom of the extraction seat;

[0021] The top edge of the powder bowl body is provided with a curling edge, and the powder bowl assembly is placed in the third cavity and is hung on the periphery of the top opening through the curling edge to achieve fixation.

[0022] In addition, the third aspect of the present invention further provides a coffee water system, comprising the above-mentioned extraction handle, boiler, switch and water outlet pipe, wherein:

[0023] A water guide pipe is provided in the boiler, the water guide pipe is connected to the water inlet end of the water outlet pipe, and the water outlet end of the water outlet pipe is connected to the extraction handle;

[0024] The conversion switch includes a rotating shaft, a knob provided at one end of the rotating shaft, and a conversion element provided at the other end of the rotating shaft and located at the connection point between the water conduit and the water outlet pipe;

[0025] When the water in the boiler boils, the hot water can enter the water conduit and enter the water outlet pipe through the conversion element, and then enter the powder bowl body through the water outlet pipe to achieve coffee extraction.

[0026] In summary, the present invention provides a coffee powder basket assembly, an extraction handle, and a coffee water system for coffee extraction. At least one second filter hole is provided at the bottom of the powder basket body, and the cross-sectional area of ​​a single second filter hole or the sum of the cross-sectional areas of multiple second filter holes is smaller than the cross-sectional area of ​​multiple first filter holes. With this arrangement, when the coffee liquid extracted from the first filter hole flows to the second filter hole with a smaller cross-sectional area, the resistance it encounters will be further increased, thereby achieving secondary extraction of the coffee liquid, thereby making the extracted coffee liquid richer in oil, thereby improving the taste and flavor of the coffee. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is an exploded schematic diagram of the coffee extraction basket assembly of the present invention;

[0028] Figure 2 for Figure 1 Explosion diagram from another perspective;

[0029] Figure 3 This is a schematic diagram of the structure of the coffee extraction powder basket assembly of the present invention;

[0030] Figure 4 for Figure 3 Structural diagram from another perspective;

[0031] Figure 5 Schematic cross-section of the coffee extraction basket assembly of the present invention;

[0032] Figure 6 This is a schematic diagram of the structure of the extraction handle of the utility model;

[0033] Figure 7 This is a cross-sectional schematic diagram of the extraction handle of the utility model;

[0034] Figure 8 This is a schematic diagram of the structure of the coffee water system of the utility model;

[0035] Figure 9 This is a partial structural diagram of the coffee water system of the present invention.

[0036] The meanings of the reference numerals are as follows:

[0037] 1. Powder bowl assembly; 11. Powder bowl body; 111. First cavity; 112. Second filter hole; 113. Curled edge; 12. Filter screen; 121. First filter hole; 122. First folded edge; 13. Liquid collection tray; 131. First liquid outlet; 132. Second cavity; 133. Second folded edge; 134. First groove; 135. Protruding ring; 14. Filter screen; 15. Sealing ring; 2. Handle body; 3. Extraction seat; 31. Third cavity; 32. Second liquid outlet; 4. Boiler; 41. Water pipe; 5. Switch; 51. Rotating shaft; 52. Knob; 53. Conversion element; 6. Water outlet pipe. DETAILED DESCRIPTION

[0038] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0041] Example 1

[0042] See Figure 1-5The utility model discloses a coffee powder bowl assembly 1, comprising a bowl-shaped powder bowl body 11, wherein a first cavity 111 with an open top is defined inside the powder bowl body 11; a filter screen 12 is further embedded in the powder bowl body 11, and a plurality of first filter holes 121 are defined on the filter screen 12; in addition, the assembly includes a liquid collecting tray 13 sleeved on the bottom of the powder bowl body 11, and a first liquid outlet 131 is defined at the bottom of the liquid collecting tray 13.

[0043] Among them, the bottom of the powder bowl body 11 is provided with at least one second filter hole 112 connected to the first cavity 111 and located between the plurality of first filter holes 121 and the first liquid outlet nozzle 131; preferably, the second filter hole 112 is provided with one and is located at the bottom center of the powder bowl body 11, and the cross-sectional area of ​​the second filter hole 112 is smaller than the sum of the cross-sectional areas of the plurality of first filter holes 121.

[0044] Therefore, by providing a second filter hole 112 at the bottom of the powder bowl body 11, and the cross-sectional area of ​​the second filter hole 112 is smaller than the cross-sectional area of ​​the multiple first filter holes 121, when the coffee liquid extracted from the first filter holes 121 flows to the second filter holes 112 with a smaller cross-sectional area, the resistance it encounters will be further increased, thereby achieving secondary extraction of the coffee liquid, so that the extracted coffee liquid is richer in oil, thereby improving the taste and flavor of the coffee.

[0045] Of course, in other embodiments, multiple second filter holes 112 may be provided. As long as the sum of the cross-sectional areas of the multiple second filter holes 112 is less than the sum of the cross-sectional areas of the multiple first filter holes 121, the coffee liquid can be re-extracted when it flows into the second filter holes 12. Therefore, this is not a limitation. Preferably, the multiple second filter holes 112 are distributed evenly spaced from the bottom center of the powder bowl body 11.

[0046] Furthermore, the sum of the cross-sectional areas of the plurality of first filter holes 121 is set as S1, and the cross-sectional area of ​​a single second filter hole 112 or the sum of the cross-sectional areas of the plurality of second filter holes 112 is set as S2, and the following conditions are satisfied: 2.38≤S1 / S2≤485.

[0047] Therefore, within this numerical range, the second filter hole 112 can pressurize the coffee liquid to achieve secondary extraction of the coffee liquid, while also not causing the coffee liquid flow rate to be too low due to an excessively small cross-sectional area.

[0048] In the embodiment of the present invention, the plurality of first filter holes 121 are distributed at equal intervals from the center of the filter screen 12 to the surrounding areas.

[0049] In an embodiment of the present invention, the edge of the filter 12 is bent upward to form a first folded edge 122. The filter 12 is embedded in the first cavity 111 and an interference fit is formed between the first folded edge 122 and the inner wall of the powder bowl body 11 to achieve assembly and fixation.

[0050] Furthermore, the liquid collecting tray 13 further has a first groove 134 disposed therebetween, communicating with the second filter hole 112 and the first liquid outlet 131. At least one filter screen 14 is disposed in the first groove 134. Preferably, two layers of filter screens 14 are disposed in the first groove 134, and the two layers of filter screens 14 are stacked one on top of the other.

[0051] Therefore, by arranging at least one layer of filter 14 in the first groove 134, when the coffee liquid is rapidly ejected through the second filter hole 112, the filter 14 can block the coffee liquid, so that the coffee liquid can be fully mixed with the air and form rich foam, thereby fully dissipating the aroma of the coffee and further improving the taste of the coffee.

[0052] Among them, the top edge of the liquid collecting tray 13 is bent upward to form a second folded edge 133, thereby forming a second cavity 132 with an open top on the liquid collecting tray 13. The liquid collecting tray 13 is mounted on the outer bottom of the powder bowl body 11 through the second cavity 132, and an interference fit is formed between the second folded edge 133 and the outer peripheral wall of the powder bowl body 11 to achieve assembly and fixation.

[0053] Furthermore, it also includes a sealing ring 15. The liquid collecting tray 13 is also provided with a convex ring 135 located in the second cavity 132 and arranged around the first groove 134. The sealing ring 15 is sleeved on the outer periphery of the convex ring 135; therefore, when the liquid collecting tray 13 is sleeved on the powder bowl body 11, the sealing ring 15 can respectively abut against the powder bowl body 11 and the liquid collecting tray 13 to achieve a waterproof seal, thereby preventing the coffee liquid from leaking.

[0054] Example 2

[0055] See Figure 6-7 The present invention also provides an extraction handle, comprising a handle body 2, an extraction seat 3 disposed at one end of the handle body 2, and a powder bowl assembly 1 as described in the first embodiment, which is detachably placed within the extraction seat 3. The extraction seat 3 defines a third cavity 31 with an open top, and a second liquid outlet is provided at the bottom of the extraction seat 3, communicating with the third cavity 31. The powder bowl body 11 has a rolled edge 113 at its top edge. The powder bowl assembly 1 is placed within the third cavity 31 and is secured to the periphery of the top opening via the rolled edge 113.

[0056] Therefore, after the coffee liquid flows out through the first liquid outlet 131 , it can enter the third cavity 31 and finally flow out through the second liquid outlet 32 ​​.

[0057] Example 3

[0058] See Figure 8-9 The present invention further provides a coffee water system, comprising the extraction portafilter of the second embodiment, a boiler 4, a switch 5, and a water outlet pipe 6. Specifically, the boiler 4 comprises a chamber for boiling water, within which a vertically arranged water pipe 41 is disposed. The water inlet of the water pipe 41 communicates with the chamber, and the water outlet of the water pipe 41 communicates with the water inlet of the water outlet pipe 6, which in turn communicates with the extraction portafilter. Preferably, the water outlet of the water outlet pipe 6 is formed with a brewing head, to which the extraction base 3 in the extraction portafilter is detachably connected.

[0059] The switch 5 includes a fixed bracket mounted on the top of the boiler 4, a rotating shaft 51 extending through the bracket, a knob 52 at one end of the rotating shaft 51, and a switching element 53 at the other end of the rotating shaft 51, located at the junction of the water conduit 41 and the water outlet pipe 6. When the user rotates the knob 52, the rotating shaft 51 rotates, which in turn rotates the switching element 53, thereby discharging hot water or steam.

[0060] Therefore, when the water in the boiler 4 boils, the hot water can enter the water pipe 41. After turning the knob 52 to switch to the hot water outlet position, the hot water can enter the water outlet pipe 6 through the conversion element 53, and then enter the powder bowl body 11 through the water outlet pipe 6 to achieve coffee extraction.

[0061] In summary, the present invention provides a coffee powder bowl assembly 1, an extraction handle, and a coffee water system, which are configured by setting at least one second filter hole 112 at the bottom of the powder bowl body 11, and the cross-sectional area of ​​a single second filter hole 112 or the sum of the cross-sectional areas of multiple second filter holes 112 is smaller than the cross-sectional area of ​​multiple first filter holes 121. With such a configuration, when the coffee liquid extracted from the first filter hole 121 flows to the second filter hole 112 with a smaller cross-sectional area, the resistance it encounters will be further increased, thereby achieving secondary extraction of the coffee liquid, thereby making the extracted coffee liquid richer in oil, thereby improving the taste and flavor of the coffee.

[0062] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A coffee extraction powder basket assembly, characterized in that: include: The powder bowl body has a first cavity with an open top formed therein; A filter screen is disposed in the first cavity; the filter screen is provided with a plurality of first filter holes; A liquid collecting tray is provided at the bottom of the powder bowl body; a first liquid outlet is provided at the bottom of the liquid collecting tray; The bottom of the powder bowl body is provided with at least one second filter hole connected to the first cavity and located between the first filter holes and the first liquid outlet nozzle; When there is a single second filter hole, the cross-sectional area of ​​the single second filter hole is smaller than the sum of the cross-sectional areas of the multiple first filter holes; when there are multiple second filter holes, the sum of the cross-sectional areas of the multiple second filter holes is smaller than the sum of the cross-sectional areas of the multiple first filter holes.

2. The powder bowl assembly according to claim 1, characterized in that: The sum of the cross-sectional areas of the plurality of first filter holes is S1, the cross-sectional area of ​​a single second filter hole or the sum of the cross-sectional areas of the plurality of second filter holes is S2, and the following condition is satisfied: 2.38≤S1 / S2≤485.

3. The powder bowl assembly according to claim 1 or 2, characterized in that: The liquid collecting tray further has a first groove in the interior thereof, which is connected to the second filter hole and the first liquid outlet nozzle respectively. At least one filter screen is placed in the first groove.

4. The powder bowl assembly according to claim 3, characterized in that: A second cavity with an open top is defined inside the liquid collecting tray. The liquid collecting tray is sleeved on the outer bottom of the powder bowl body through the second cavity and forms an interference fit with the powder bowl body.

5. The powder bowl assembly according to claim 4, characterized in that: It also includes a sealing ring arranged inside the second cavity. When the liquid collecting tray is mounted on the powder bowl body, the sealing ring abuts against the powder bowl body and the liquid collecting tray respectively to achieve a waterproof seal.

6. The powder bowl assembly according to claim 5, characterized in that: The liquid collecting tray is further provided with a convex ring located in the second cavity and arranged around the first groove, and the sealing ring is sleeved on the outer periphery of the convex ring.

7. The powder bowl assembly according to claim 1, wherein: The filter is embedded in the first cavity and forms an interference fit with the powder bowl body.

8. An extraction handle, characterized in that: The invention comprises a handle body, an extraction seat arranged at one end of the handle body, and a powder bowl assembly according to any one of claims 1 to 7 that can be detachably placed in the extraction seat.

9. The extraction handle according to claim 8, characterized in that A third cavity with an open top is provided inside the extraction seat, and a second liquid outlet connected to the third cavity is provided at the bottom of the extraction seat; The top edge of the powder bowl body is provided with a curling edge, and the powder bowl assembly is placed in the third cavity and is hung on the periphery of the top opening through the curling edge to achieve fixation.

10. A coffee water system, characterized in that: The invention comprises the extraction handle, boiler, switch and water outlet pipe according to claim 8 or 9, wherein: A water guide pipe is provided in the boiler, the water guide pipe is connected to the water inlet end of the water outlet pipe, and the water outlet end of the water outlet pipe is connected to the extraction handle; The conversion switch includes a rotating shaft, a knob provided at one end of the rotating shaft, and a conversion element provided at the other end of the rotating shaft and located at the connection point between the water conduit and the water outlet pipe; When the water in the boiler boils, the hot water can enter the water conduit and enter the water outlet pipe through the conversion element, and then enter the powder bowl body through the water outlet pipe to achieve coffee extraction.

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