Filtering device for a coffee machine

Abstract

The utility model discloses a filter device for coffee equipment, and concretely relates to coffee filter technical field, including outer cylinder, the top of outer cylinder is provided with the limiting ring for the stable support in the coffee equipment, the inner wall fixed connection of outer cylinder has the inner cylinder, and the inside connection of inner cylinder has filter core subassembly. The filter device of the utility model design adopts the double -layer structure of inner and outer cylinder, is used for improving structural strength, and is not easy to deform and be damaged, and the filter core subassembly that sets up can be disassembled according to need in the inner wall of inner cylinder, and the whole part between filter core subassembly adopts assembled splicing structure, and has multiple filter structure, and the mesh of filter screen gradually becomes smaller from top to bottom, can realize more accurate multistage filter effect, and the filter structure of double hopper formula makes the liquid of the upper side in the funnel formula inner wall keep into the inside of filter core subassembly, thereby avoids the problem that direct current formula liquid passes through filter screen and is easy to occur the blockage.

Description

Technical Field

[0001] This utility model relates to the field of coffee filtration technology, and more specifically, to a filtration device for coffee equipment. Background Technology

[0002] As one of the world's most popular beverages, coffee's refined and diversified production processes have driven technological innovation in coffee equipment. Among these innovations, the filter, as a core component of coffee extraction, directly affects the taste, flavor purity, and production efficiency of coffee. From traditional hand-brewing to modern intelligent equipment, the evolution of the filter reflects coffee culture's dual pursuit of quality and convenience. The concept of coffee filtration can be traced back to the early 19th century, when coffee grounds and liquid were separated using filter cloth. However, due to its cumbersome operation, it failed to become widespread. Later, paper coffee filters were invented, and a funnel-shaped filter cup was designed to accompany them, pioneering modern filtered coffee. This technology effectively removes fine grounds and oils from coffee powder through the physical barrier of the filter paper, making the extract clearer and the flavor layers more distinct.

[0003] While existing funnel-shaped filter cup structures can achieve filtration, their overall structural strength is poor in actual use. They are easily deformed when squeezed, making it difficult for the filter device to fit the original filter chamber inside the coffee equipment. Furthermore, most funnel-shaped filter cups are single-layer filter structures, lacking zoned filtration for impurities of different particle sizes. This causes impurities to accumulate on the same filter screen, leading to clogging and increased cleaning frequency. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a filtration device for coffee equipment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a filter device for coffee equipment, comprising an outer cylinder, a limiting ring for stably supporting the outer cylinder within the coffee equipment being provided at the top of the outer cylinder, an inner cylinder being fixedly connected to the inner wall of the outer cylinder, a filter core assembly being connected inside the inner cylinder, and a limiting protrusion for supporting the bottom of the filter core assembly being provided at the bottom of the inner cylinder, the filter core assembly comprising an upper funnel body, a filter cylinder, and a lower funnel body, the upper funnel body and the lower funnel body being respectively connected to the upper and lower ends of the filter cylinder.

[0006] As a further improvement to the technical solution of this utility model, the top of the upper funnel body is provided with an upper ring, and the two outer walls of the upper ring are symmetrically provided with two rubber protrusions that are embedded in the inner wall of the inner cylinder. The two inner walls of the inner cylinder body are provided with slots for embedding the rubber protrusions.

[0007] As a further improvement to the technical solution of this utility model, the outer surfaces of both the upper and lower ends of the filter cylinder are provided with external threads, and the bottom of the upper funnel body is provided with a first connecting ring connected to the top of the filter cylinder. The inner surface of the first connecting ring is provided with an internal thread that matches the external thread structure.

[0008] As a further improvement to the technical solution of this utility model, the top of the lower funnel body is provided with a second connecting body connected to the bottom of the filter cylinder, and the inner surface of the second connecting body is provided with an internal thread matching the external thread structure.

[0009] As a further improvement to the technical solution of this utility model, the inner walls of the upper and lower ends of the filter cylinder are respectively provided with a first filter screen and a second filter screen. The first filter screen is located inside the first connecting ring, and the second filter screen is located inside the second connecting body.

[0010] As a further improvement to the technical solution of this utility model, the pore size of the first filter screen is larger than that of the second filter screen.

[0011] As a further improvement to the technical solution of this utility model, a lower end ring is provided at the bottom of the lower funnel body, and a third filter screen is provided on the inner wall of the lower end ring.

[0012] The beneficial effects of this utility model are: 1. The filter device designed in this utility model adopts a double-layer structure of inner and outer cylinders to improve structural strength and prevent deformation and damage. The limiting ring at the top of the outer cylinder is used to stably support the coffee equipment. By setting the filter core assembly, it can be disassembled and assembled on the inner wall of the inner cylinder as needed. The bottom of the filter core assembly is supported by the limiting protrusion, and the top of the filter core assembly is fixed and snapped on the inner cylinder by the set flexible rubber protrusion, thereby maintaining relative assembly stability. The rubber protrusion adopts a semi-circular structure, which makes it easy to remove by applying upward force during subsequent disassembly and assembly. 2. The filter element assembly adopts an assembled splicing structure and has a multi-stage filtration structure. The mesh size of the filter screen gradually decreases from top to bottom, which can achieve a more precise multi-stage filtration effect. After filtration, remove the filter element assembly upwards and rotate the upper and lower funnels to separate them from the upper and lower ends of the filter cylinder. This makes it easy for users to clean the filter screen. The double-funnel filtration structure ensures that the liquid flowing in from above is swirled into the filter element assembly through the inner wall of the funnel, thus avoiding the problem of blockage caused by direct liquid flow through the filter screen. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the present invention.

[0014] Figure 2 This is a front view of the filter element assembly in this utility model.

[0015] Figure 3 This utility model Figure 1 Enlarged view of part A in the middle.

[0016] Figure 4 This is one of the perspective views of the filter element assembly in this utility model.

[0017] Figure 5 This is the second perspective view of the filter element assembly in this utility model.

[0018] Figure 6 This is a schematic diagram of the filter cartridge in this utility model.

[0019] The attached figures are labeled as follows: 1. Outer cylinder; 2. Limiting ring; 3. Inner cylinder; 4. Filter element assembly; 5. Limiting protrusion; 301. Slot; 401. Upper funnel body; 402. Upper end ring; 403. First connecting ring; 404. Filter cylinder; 405. Lower funnel body; 406. Second connecting body; 407. Lower end ring; 408. Third filter screen; 409. Rubber protrusion; 410. External thread; 411. First filter screen; 412. Second filter screen. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] As attached Figure 1-6 The filter device for a coffee machine shown includes an outer cylinder 1. A limiting ring 2 for stable placement inside the coffee machine is provided at the top of the outer cylinder 1. An inner cylinder 3 is fixedly connected to the inner wall of the outer cylinder 1. A filter core assembly 4 is connected inside the inner cylinder 3. A limiting protrusion 5 for supporting the bottom of the filter core assembly 4 is provided at the bottom of the inner cylinder 3. The filter core assembly 4 includes three parts: an upper funnel body 401, a filter cylinder 404, and a lower funnel body 405. The upper funnel body 401 and the lower funnel body 405 are respectively connected to the upper and lower ends of the filter cylinder 404. The filter core assembly 4 can be disassembled and assembled on the inner wall of the inner cylinder 3 as needed, and the bottom of the filter core assembly 4 is supported by the limiting protrusion 5.

[0022] As attached Figure 1-6As shown, the upper funnel body 401 has an upper ring 402 at its top. Two rubber protrusions 409 are symmetrically arranged on the two outer walls of the upper ring 402, which are embedded in the inner wall of the inner cylinder 3. Both inner walls of the inner cylinder 3 have slots 301 for embedding the rubber protrusions 409. The outer surfaces of both the upper and lower ends of the filter cylinder 404 are provided with external threads 410. The bottom of the upper funnel body 401 has a first connecting ring 403 connected to the top of the filter cylinder 404. The inner surface of the first connecting ring 403 is provided with an internal thread matching the structure of the external thread 410. The top of the lower funnel body 405 has a second connecting body 406 connected to the bottom of the filter cylinder 404. The inner surface of the second connecting body 406 is provided with an internal thread matching the structure of the external thread 410. The inner walls of both the upper and lower ends of the filter cylinder 404 are respectively provided with first filter screens. The first filter 411 is located inside the first connecting ring 403, and the second filter 412 is located inside the second connecting body 406. The aperture of the first filter 411 is larger than that of the second filter 412. The bottom of the lower funnel body 405 is provided with a lower end ring 407, and the inner wall of the lower end ring 407 is provided with a third filter 408. The top of the filter core assembly 4 is secured to the inner cylinder 3 by a flexible rubber protrusion 409, thereby maintaining relative assembly stability. The rubber protrusion 409 adopts a semi-circular structure, which makes it easy to remove by applying upward force during subsequent disassembly and assembly. The filter core assembly 4 adopts an assembly-type splicing structure and has a multi-stage filtration structure. The mesh size of the filter screen gradually decreases from top to bottom, which can achieve a more precise multi-stage filtration effect.

[0023] Working principle: This utility model designs a filtration device for coffee equipment, the specific structure of which is shown in the attached instruction manual. Figure 1-6 As shown, in this technical solution, the designed filter device adopts a double-layer structure of inner and outer cylinders, which improves structural strength and makes it less prone to deformation and damage. The limiting ring 2 at the top of the outer cylinder 1 is used to stably support it inside the coffee equipment. By setting the filter core assembly 4, it can be disassembled and assembled on the inner wall of the inner cylinder 3 as needed. The bottom of the filter core assembly 4 is supported by the limiting protrusion 5, and the top of the filter core assembly 4 is locked onto the inner cylinder 3 by the setting of the flexible rubber protrusion 409, thereby maintaining relative assembly stability. The rubber protrusion 409 adopts a semi-circular structure, which makes it easy to remove by applying upward force during subsequent disassembly and assembly. The filter element assembly 4 adopts an assembled splicing structure and has a multi-stage filtration structure. The mesh size of the filter screen gradually decreases from top to bottom, which can achieve a more precise multi-stage filtration effect. After filtration, the filter element assembly 4 is removed upwards, and the upper funnel body 401 and the lower funnel body 405 are rotated to separate them from the upper and lower ends of the filter cylinder 404, so that the user can easily clean the filter screen. The double-funnel filtration structure ensures that the liquid flowing in from above is kept swirling into the interior of the filter element assembly 4 on the inner wall of the funnel, thus avoiding the problem of blockage caused by direct liquid flowing through the filter screen.

[0024] In the accompanying drawings of the embodiments disclosed in this utility model, only the structures involved in the embodiments of this utility model are shown. Other structures can be referred to with ordinary design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A filter device for a coffee machine, comprising an outer cylinder (1), wherein a limiting ring (2) for stably supporting the filter within the coffee machine is provided at the top of the outer cylinder (1), characterized in that: The inner wall of the outer cylinder (1) is fixedly connected to the inner cylinder (3), and the inner cylinder (3) is connected to the filter core assembly (4). The bottom of the inner cylinder (3) is provided with a limiting protrusion (5) for supporting the bottom of the filter core assembly (4). The filter core assembly (4) includes three parts: an upper funnel body (401), a filter cylinder (404), and a lower funnel body (405). The upper funnel body (401) and the lower funnel body (405) are respectively connected to the upper and lower ends of the filter cylinder (404).

2. The filtering device for coffee equipment according to claim 1, characterized in that: The top of the upper funnel body (401) is provided with an upper ring (402), and the two outer walls of the upper ring (402) are symmetrically provided with two rubber protrusions (409) that are embedded in the inner wall of the inner cylinder (3). The two inner walls of the inner cylinder (3) are provided with slots (301) for embedding the rubber protrusions (409).

3. A filter device for a coffee machine according to claim 2, characterized in that: The outer surfaces of both the upper and lower ends of the filter cylinder (404) are provided with external threads (410), and the bottom of the upper funnel body (401) is provided with a first connecting ring (403) connected to the top of the filter cylinder (404). The inner surface of the first connecting ring (403) is provided with an internal thread that matches the structure of the external thread (410).

4. A filter device for a coffee machine according to claim 3, characterized in that: The top of the lower funnel body (405) is provided with a second connector (406) connected to the bottom of the filter cylinder (404), and the inner surface of the second connector (406) is provided with an internal thread matching the external thread (410) structure.

5. A filter device for a coffee machine according to claim 4, characterized in that: The filter cylinder (404) has a first filter screen (411) and a second filter screen (412) respectively provided on the inner walls of its upper and lower ends. The first filter screen (411) is located inside the first connecting ring (403), and the second filter screen (412) is located inside the second connecting body (406).

6. A filter device for a coffee machine according to claim 5, characterized in that: The aperture of the first filter screen (411) is larger than that of the second filter screen (412).

7. A filter device for a coffee machine according to claim 1, characterized in that: The bottom of the lower funnel body (405) is provided with a lower end ring (407), and the inner wall of the lower end ring (407) is provided with a third filter screen (408).

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