Filtering device for coffee machine and coffee machine

Abstract

The utility model relates to a filtering device for a coffee machine and the coffee machine, and the filtering device comprises a funnel which is internally provided with a movable cavity; the filter is arranged in the movable chamber of the funnel in a manner of linearly moving in the up-down direction relative to the funnel; the drainage nozzle is rotationally arranged at the bottom of the funnel; the filter is provided with a first annular wall extending up and down, the drainage nozzle is provided with a second annular wall which extends up and down and can be matched with the first annular wall in an inner and outer sleeving mode, and the first annular wall is provided with a limiting groove spirally formed in the axial direction of the first annular wall. The second annular wall is provided with a limiting protruding block which can be correspondingly clamped into the limiting groove and slide along the limiting groove. The deslagging device has the advantages that deslagging operation is stable and reliable, labor is saved, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coffee machines, in particular to a filter device for a coffee machine and a coffee machine. Background Art

[0002] Before brewing coffee, a semi-automatic pressure coffee machine compacts the coffee powder added in the filter, making it difficult to remove the coffee residue in the filter after high-pressure extraction of coffee.

[0003] In order to facilitate the slag discharge of the filter, a Chinese invention patent application with the application publication number CN117598613A discloses a coffee machine funnel handle powder cake pouring device. A shrapnel is provided at the bottom of the powder bowl inside the funnel bracket of the device. One end of the shrapnel is hinged and fixed in the funnel inner cavity of the funnel bracket at the bottom of the powder bowl. The other end of the shrapnel is connected to one side of the turntable of the pull spring rear bracket inside the handle through a pull spring. One end of the rotating shaft of the pull spring rear bracket extends out of the handle and is connected to a knob. The other end of the rotating shaft is fixed inside the handle tube of the handle or the funnel bracket. The turntable of the pull spring rear bracket is arranged on the outer diameter of the rotating shaft. When rotating the knob, the shrapnel reciprocally strikes the bottom of the powder bowl to realize the operation of pouring the powder cake. However, in the actual use process, due to the limited vibration force of the shrapnel, its slag discharge speed is slow and noise will be generated.

[0004] Another example is a Chinese invention patent application with the application publication number CN105326393A, which discloses a funnel device and a coffee machine using the same. The funnel device includes a funnel assembly having a cylindrical funnel body, a filter screen assembly and a filter screen bracket arranged inside the funnel body, and a top rod assembly. Among them, the upper end surface of the filter screen assembly and the inner wall of the funnel body form an inner space for holding coffee powder. The filter screen bracket is axially adjustably connected to the funnel body to adjust the size of the inner space. The top rod assembly is configured to be able to drive the filter screen assembly to move axially so that the coffee powder cake moves out of the inner space. The top rod assembly includes a disc member and a rod fixedly connected to the disc member. The filter screen assembly includes a filter screen and an annular elastic member surrounding the circumference of the filter screen. The disc member is arranged inside the annular elastic member, and the rod axially extends downward through the filter screen bracket. When pushing the rod upward to drive the coffee powder cake to fall, the spring is compressed. After the coffee powder cake falls, due to the elastic force, the spring resets the rod and the disc member. When the funnel device in this patent application discharges slag, it directly drives the coffee powder residue to break away by pushing the rod. This slag discharge process requires the user to apply sufficient force to the top rod to push the slag cake, and the operation is relatively laborious, and the user experience is not good.

[0005] Therefore, the existing filter device for coffee machines still needs further improvement. Summary of the Utility Model

[0006] The first technical problem to be solved by the present utility model is to provide a coffee machine filter device with stable and reliable slag discharge operation and labor saving in view of the current situation of the prior art.

[0007] The second technical problem to be solved by the present utility model is to provide a coffee machine applying the above filter device in view of the current situation of the prior art.

[0008] The technical solution adopted by the present utility model to solve the above first technical problem is: a coffee machine filter device, comprising:

[0009] a funnel, an activity chamber being defined inside thereof;

[0010] a filter, which is arranged in the activity chamber of the funnel in a manner that can linearly move relative to the funnel in the up and down direction;

[0011] a drainage nozzle, which is rotatably arranged at the bottom of the funnel;

[0012] The filter has a first annular wall extending up and down, and the drainage nozzle has a second annular wall extending up and down and capable of being sleeved with the first annular wall inside and outside. A limiting groove arranged in a spiral shape along the axial direction is formed on the first annular wall, and a limiting convex block capable of correspondingly being clamped into the limiting groove and sliding along the limiting groove is arranged on the second annular wall.

[0013] As an improvement, the first annular wall is sleeved outside the second annular wall, the limiting groove is formed on the inner peripheral wall of the first annular wall, and the limiting convex block is arranged on the outer peripheral wall of the second annular wall. It can be imagined that it can also be that the second annular wall is sleeved outside the first annular wall, or an annular sandwich layer is arranged on the first annular wall, and the second annular wall is correspondingly inserted into the annular sandwich layer of the first annular wall.

[0014] In order to simplify the structure of the filter and facilitate the cooperation with the drainage nozzle, the filter comprises a filter support and a filter sheet arranged on the filter support. The filter support comprises a support body and a first annular wall extending downward from the support body. A filter chamber is defined inside the first annular wall, and the filter sheet is arranged on the top of the support body.

[0015] In order to define the limit position of the downward movement of the filter and quantitatively place coffee powder in the funnel, the diameter of the first annular wall is smaller than the diameter of the support body, so that a limiting step is formed at the joint position of the filter support, and a limiting stop portion protruding radially inward is arranged on the inner peripheral wall of the funnel to limit the downward movement of the limiting step.

[0016] In order to ensure the sealing effect between the filter and the inner wall of the funnel during the up and down movement, a sealing member in sealing contact with the inner peripheral wall of the funnel is further arranged on the outer peripheral wall of the support body.

[0017] To ensure the firm fixation of the seal, an annular groove is formed on the outer peripheral wall of the bracket body, and the seal is embedded in the annular groove.

[0018] To adapt to the first annular wall of the filter, the drainage nozzle includes a drainage nozzle body and a second annular wall extending upward from the drainage nozzle body. An over-flow chamber communicating with the filter chamber is defined within the second annular wall, and the limiting bump is provided on the outer peripheral wall of the second annular wall near its top position.

[0019] To ensure the stability of the transmission cooperation between the filter and the drainage nozzle, there are two limiting bumps, and the two limiting bumps are symmetrically arranged with respect to the axis of the second annular wall.

[0020] To install the drainage nozzle onto the funnel, the outer peripheral edge of the drainage nozzle body has an outer annular wall extending upward, and a limiting buckle protruding radially inward is provided on the inner side wall of the outer annular wall. The bottom of the main body of the funnel is cylindrical, and a limiting card slot is circumferentially formed on the outer peripheral wall of the bottom portion of the funnel, and an installation opening extending upward and communicating with the limiting card slot is provided. The limiting buckle can slide into the limiting card slot from the installation opening and slide along the extending direction of the limiting card slot.

[0021] To enable the filter to move linearly in the up and down directions relative to the funnel, that is, to achieve the purpose of restricting the rotation of the filter in the circumferential direction, a limiting sliding groove extending up and down is formed on one of the inner wall of the movable chamber of the funnel and the outer wall of the filter, and a limiting sliding block capable of sliding along the limiting sliding groove is provided on the other. It can be imagined that the rotation of the filter relative to the funnel in the circumferential direction can also be restricted by setting the outer contour structure of the filter, such as designing it as a non-circular structure, to cooperate with the funnel.

[0022] The technical solution adopted by the present utility model to solve the above second technical problem is: a coffee machine, including a machine body and a filtering device provided on the machine body, and the filtering device adopts the above-mentioned coffee machine filtering device.

[0023] Compared with the prior art, the advantages of the present utility model are as follows: After coffee extraction is completed, the user can rotate the drainage nozzle, and through the cooperation of the limiting bump and the limiting groove, the filter can be driven to move upward to the upper part of the funnel, thereby discharging the coffee powder residue in the funnel. The cooperation structure of the limiting bump and the limiting groove provided between the filter and the drainage nozzle can convert the rotation of the drainage nozzle into the up and down movement of the filter. Since the rotation operation of the drainage nozzle is relatively convenient and labor-saving, and it ensures that the filter can stably move up and down relative to the funnel, improving the user experience. Description of the Drawings

[0024] Figure 1Exploded view of the filtering device according to an embodiment of the present invention;

[0025] Figure 2 Axial sectional view of the filtering device according to an embodiment of the present invention (in the state of loading powder);

[0026] Figure 3 Axial sectional view of the filtering device according to an embodiment of the present invention (in the state of discharging powder residue);

[0027] Figure 4 is Figure 3 Schematic structural view after omitting the funnel. Detailed implementation manners

[0028] The present invention will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0029] In the description and claims of the present invention, terms indicating directions such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc. are used to describe various exemplary structural parts and elements of the present invention. However, these terms are used here only for the convenience of description and are determined based on the exemplary orientations shown in the drawings. Since the embodiments disclosed by the present invention can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

[0030] Figures 1-4 A preferred embodiment of the filtering device and coffee machine of the present invention is shown. The filtering device for a coffee machine includes a funnel 10, a filter 2, and a drain spout 30.

[0031] An activity chamber 100 for placing the filter 2 is defined inside the funnel 10. The activity chamber 100 is vertically through, and its upper opening can allow the filter 2 to be loaded into it from top to bottom. There is also a limiting stop portion 13 protruding inward along the inner peripheral wall of the activity chamber 100 near its lower port. The above-mentioned limiting stop portion 13 can limit the downward movement of the filter 2 and prevent it from falling out of the lower port of the funnel 10. When the filter 2 moves down in the activity chamber 100 of the funnel 10 to a position where it abuts against the limiting stop portion 13, a certain amount of coffee powder can be placed in the cavity space at the top of the filter 2 in the installation chamber of the funnel 10.

[0032] The upper part of the funnel 10 is constructed as a structure suitable for plugging and mating with the corresponding part of the machine body. The lower part of the funnel 10 is a cylindrical structure, and the drain spout 30 is correspondingly installed on the lower end of the cylindrical structure at the lower part of the funnel 10 in a detachable manner. After being installed in place, it can rotate relative to the funnel 10 around the axis of the cylindrical structure.

[0033] The liquid guiding nozzle 30 includes a liquid guiding nozzle body 31 and a second annular wall 32 extending upward from the liquid guiding nozzle body 31. The liquid guiding nozzle body 31 further includes an outer annular wall 311 located on the periphery of the second annular wall 32. The outer annular wall 311 extends upward from the outer peripheral edge of the liquid guiding nozzle body 31, and the top height of the outer annular wall 311 is lower than the top height of the second annular wall 32. The outer annular wall 311 of the liquid guiding nozzle 30 is connected to the bottom cylindrical structure of the funnel 10 through a snap-fastening groove matching structure. Specifically, a limiting snap 3111 protruding radially inward is provided on the inner side wall of the outer annular wall 311, and a limiting groove 11 opened circumferentially and an installation opening 12 penetrating upward to the limiting groove 11 are provided on the outer peripheral wall of the bottom part of the main body of the funnel 10. In order to ensure the firmness of the assembly of the liquid guiding nozzle 30, there are two limiting snaps 3111 on the outer annular wall 311 of the liquid guiding nozzle 30 arranged corresponding to its axis, and two limiting grooves 11 and installation openings 12 on the main body of the funnel 10 are also correspondingly provided. During installation, the limiting snap 3111 on the outer annular wall 311 of the liquid guiding nozzle 30 can slide into the limiting groove 11 of the funnel 10 from the installation opening 12 and slide along the extending direction of the limiting groove 11, thereby realizing the rotation of the liquid guiding nozzle 30 relative to the funnel 10 and ensuring the limitation of the two in the up and down directions.

[0034] The internal space of the second annular wall 32 of the liquid guiding nozzle 30 is a flow-through chamber 300. After the liquid guiding nozzle 30 is assembled in place on the funnel 10, the second annular wall 32 is inserted into the first annular wall 22 of the filter 2, that is, it is connected to the filter chamber 220 defined by the first annular wall 22. The side part of the liquid guiding nozzle body 31 of this embodiment has two liquid outlets 33, and the liquid outlets 33 are connected to the flow-through chamber 300 of the liquid guiding nozzle 30.

[0035] The filter 2 includes a filter support 20 and a filter sheet 23. As Figure 1 shown, the filter support 20 is an overall sleeve structure with an open bottom end, and it includes a support body 21 and a first annular wall 22 extending downward from the support body 21. The support body 21 is cylindrical, and an annular groove 210 is opened on its outer peripheral wall, and a seal 24 that can be in sealing contact with the inner peripheral wall of the movable chamber 100 of the funnel 10 is embedded in the annular groove 210. The first annular wall 22 extends downward from the bottom of the support body 21, and it is integrally designed with the support body 21. Among them, the diameter of the first annular wall 22 is smaller than the diameter of the support body 21, so a limiting step 222 that is larger at the top and smaller at the bottom is formed at the joint position of the two. When the filter 2 moves downward, the limiting step 222 can abut against the top of the limiting stop 13 of the movable chamber 100 of the funnel 10 to limit the extreme position of the downward movement of the filter 2. A filter chamber 220 is defined inside the first annular wall 22, and the second annular wall 32 of the liquid guiding nozzle 30 can be inserted into it from bottom to top. The filter sheet 23 is attached to the top position of the support body 21.

[0036] On the outer wall of the first annular wall 22 of the filter 2, a limiting sliding groove 223 extending up and down is provided, and on the inner wall of the movable chamber 100 of the funnel 10, a limiting slider (not shown) is correspondingly provided, which protrudes inward and can slide up and down along the above-mentioned limiting sliding groove 223. When the filter 2 is installed in place in the movable chamber 100 of the funnel 10, the limiting slider can correspondingly slide into the limiting sliding groove 223 of the first annular wall 22, thereby realizing the linear movement of the filter 2 relative to the funnel 10 in the up and down directions and achieving the purpose of restricting the rotation of the filter 2 in the circumferential direction. It can be imagined that in other preferred embodiments, the rotation of the filter 2 relative to the funnel 10 in the circumferential direction can also be restricted by setting the outer contour structure of the filter 2, such as designing it as a non-circular structure, to cooperate with the funnel 10.

[0037] On the first annular wall 22 of the filter 2, a limiting groove 221 arranged in a spiral shape along its axis is provided, and on the second annular wall 32 of the drainage nozzle 30, a limiting protrusion 321 is provided that can correspondingly be inserted into the limiting groove 221 and slide along the limiting groove 221. Specifically, there are two limiting protrusions 321, both of which are arranged at positions adjacent to the top of the outer peripheral wall of the second annular wall 32, and the two limiting protrusions 321 are symmetrically arranged about the axis of the second annular wall 32. There are also two corresponding limiting grooves 221 on the first annular wall 22 of the filter 2. Since the rotation of the filter 2 is restricted in the circumferential direction, when the drainage nozzle 30 rotates forward and backward relative to the funnel 10, the drainage nozzle 30 drives the filter 2 to move up or down through the cooperation of the limiting protrusion 321 and the limiting groove 221 on the filter 2.

[0038] The usage process of the coffee machine filter device is as follows:

[0039] Manually rotate the drainage nozzle 30 to drive the filter 2 to move down to the bottom of the funnel 10. A cavity is formed in the upper space above the top of the filter 2 in the movable chamber 100 of the funnel 10 for quantitatively loading coffee powder. After coffee extraction is completed, the user rotates the drainage nozzle 30, and through the cooperation of the limit bump 321 and the limit groove 221, the filter 2 can be driven to move up to the upper part of the funnel 10, so as to discharge the coffee powder residue in the funnel 10. At this time, the limit buckle 3111 on the outer ring wall 311 of the drainage nozzle 30 is aligned with the mounting port 12 of the limit sliding groove 223 on the funnel 10, and the drainage nozzle 30 can be disengaged from the funnel 10 downward. After the drainage nozzle 30 is disengaged from the funnel 10, the limit bump 321 provided on the second ring wall 32 of the drainage nozzle 30 also disengages from the limit groove 221 provided on the filter 2. At this time, the filter 2 can be disengaged from the funnel 10 upward. The cooperation structure of the limit bump 321 and the limit groove 221 provided between the filter 2 and the drainage nozzle 30 can convert the rotation of the drainage nozzle 30 into the up and down movement of the filter 2. Since the rotation operation of the drainage nozzle 30 is relatively convenient and labor-saving, and it ensures that the filter 2 can stably rise and fall relative to the funnel 10, the user experience is improved. By using the drainage nozzle 30 to drive the filter 2 to move in the funnel 10 and being able to disengage the drainage nozzle 30 and the filter 2 from the funnel 10, not only is it quick and convenient to clean the coffee residue, but also it can be disassembled, maintained and cleaned without the aid of tools, ensuring cleanliness and hygiene. Its structure is more concise, easy to process and assemble, with low cost, reliable operation and long service life.

[0040] This embodiment also relates to a coffee machine, which includes a machine body and a filtering device provided on the machine body, and the filtering device adopts the above-mentioned filtering device for coffee machine.

Claims

1. A filter device for a coffee machine, comprising: A funnel (10) defining an active chamber (100) therein; A filter (2) is disposed in a movable chamber (100) of the funnel (10) in a manner capable of linearly moving in an up-and-down direction relative to the funnel (10); A drainage nozzle (30) is rotatably disposed at the bottom of the funnel (10); The invention is characterized in that: the filter (2) has a first annular wall (22) extending upward and downward, the drainage nozzle (30) has a second annular wall (32) extending upward and downward and capable of being arranged inside and outside the first annular wall (22), the first annular wall (22) is provided with a limiting groove (221) arranged in a spiral shape along its axial direction, and the second annular wall (32) has a limiting protrusion (321) that can be correspondingly inserted into the limiting groove (221) and slide along the limiting groove (221).

2. The filter device for a coffee machine according to claim 1, characterized in that: The first annular wall (22) is sleeved outside the second annular wall (32); the inner circumferential wall of the first annular wall (22) is provided with the limiting groove (221); the outer circumferential wall of the second annular wall (32) is provided with the limiting protrusion (321).

3. The filter device for a coffee machine according to claim 2, characterized in that: The filter (2) comprises a filter support (20) and a filter plate (23) arranged on the filter support (20); the filter support (20) comprises a support body (21) and a first annular wall (22) extending downward from the support body (21); a filter chamber (220) is defined in the first annular wall (22); and the filter plate (23) is arranged on the top of the support body (21).

4. The filter device for a coffee machine according to claim 3, characterized in that: The diameter of the first annular wall (22) is smaller than the diameter of the support body (21), so that the filter support (20) forms a limiting step (222) at the position where the two are joined, and the inner peripheral wall of the funnel (10) has a limiting stopper (13) protruding radially inward to limit the downward movement of the limiting step (222).

5. The filter device for a coffee machine according to claim 3, characterized in that: A sealing member (24) is also provided on the outer peripheral wall of the support body (21) and is in sealing contact with the inner peripheral wall of the funnel (10).

6. The filter device for a coffee machine according to claim 5, characterized in that: An annular groove (210) is provided on the outer peripheral wall of the bracket body (21), and the sealing member (24) is embedded in the annular groove (210).

7. The filter device for a coffee machine according to claim 3, characterized in that: The drainage nozzle (30) comprises a drainage nozzle body (31) and a second annular wall (32) extending upward from the drainage nozzle body (31), wherein the second annular wall (32) defines a flow chamber (300) connected to the filter chamber (220), and the second annular wall (32) is provided with the limiting protrusion (321) on the outer peripheral wall thereof near the top thereof.

8. The filter device for a coffee machine according to claim 7, characterized in that: The outer peripheral edge of the drainage nozzle body (31) has an outer ring wall (311) extending upward, and the inner side wall of the outer ring wall (311) has a limit buckle (3111) protruding radially inward. The bottom of the main body of the funnel (10) is cylindrical, and the outer peripheral wall of the bottom part of the funnel (10) has a limit buckle groove (11) opened in the circumferential direction and a mounting opening (12) extending from bottom to top to the limit buckle groove (11). The limit buckle (3111) can slide from the mounting opening (12) into the limit buckle groove (11) and slide along the extension direction of the limit buckle groove (11).

9. The filter device for a coffee machine according to any one of claims 1 to 8, characterized in that: One of the inner wall of the movable chamber (100) of the funnel (10) and the outer wall of the filter (2) is provided with a limit slide groove (223) extending up and down, and the other is provided with a limit slide block capable of sliding along the limit slide groove (223).

10. A coffee machine, comprising a machine body and a filtering device arranged on the machine body, characterized in that: The filter device is the filter device for a coffee machine according to any one of claims 1 to 9.

Images